Custom Soil Resource Report for Montgomery County, Texas, Polk and San Jacinto Counties, Texas, and Walker County, Texas

Transcription

1 United States Department of Agriculture Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Montgomery County, Texas, Polk and San Jacinto Counties, Texas, and Walker County, Texas June 9, 2014

2 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments ( nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center ( offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist ( cid=nrcs142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means 2

3 for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C or call (800) (voice) or (202) (TDD). USDA is an equal opportunity provider and employer. 3

4 Contents Preface...2 How Soil Surveys Are Made...6 Soil Map...8 Soil Map...9 Legend...10 Map Unit Legend...11 Map Unit Descriptions...13 Montgomery County, Texas...16 Ab Landman fine sand...16 An Angie fine sandy loam...16 Bb Bibb soils, frequently flooded...17 BlC Betis fine sand, 0 to 5 percent slopes...18 BlD Betis fine sand, 5 to 12 percent slopes...19 Bo Boy loamy fine sand, 1 to 5 percent slopes...20 Bu Burleson clay, 1 to 3 percent slopes...21 CnC Conroe gravelly loamy fine sand, 0 to 5 percent slopes...22 CoC Conroe loamy fine sand, 0 to 5 percent slopes...23 CoD Conroe loamy fine sand, 5 to 12 percent slopes...24 Cw Crowley fine sandy loam...25 Eu Betis loamy fine sand...26 FcC2 Latium clay, 1 to 5 percent slopes, eroded...26 FcD2 Latium clay, 5 to 8 percent slopes, eroded...27 FgD Latium-Gullied land complex, 3 to 8 percent slopes...28 Fs Lilbert loamy fine sand...30 Ft Lilbert loamy fine sand, terrace...30 Ga Garner clay...31 Gu Gunter fine sand...32 Hs Bleiblerville clay...33 Kc Kaufman clay, frequently flooded...34 KlB Crockett fine sandy loam, 1 to 3 percent slopes...35 KpB Normangee clay loam, 1 to 3 percent slopes...36 Ks Kosse soils, frequently flooded...37 ObC2 Woodville soils, 2 to 5 percent slopes, eroded...38 Oc Osier-Alaga complex...39 Ro Kirbyville fine sandy loam...40 Se Segno fine sandy loam...41 So Sorter silt loam...42 Sp Splendora fine sandy loam, 0 to 2 percent slopes...43 Ss Conroe soils...44 SuC Woodville fine sandy loam, 1 to 5 percent slopes...45 SuD Woodville fine sandy loam, 5 to 12 percent slopes...46 Th Gowker sandy clay loam, overwash...47 Tk Aris loam, heavy substratum...47 Tu Gladewater clay, frequently flooded

5 W Water...49 Wa Waller loam...50 WkC Fetzer loamy fine sand, 1 to 5 percent slopes...51 WkD Fetzer loamy fine sand, 5 to 12 percent slopes...51 Polk and San Jacinto Counties, Texas...53 BoB Boykin loamy fine sand, 1 to 5 percent slopes...53 BuD Burkeville clay, 5 to 15 percent slopes...54 CrB Conroe gravelly loamy fine sand, 1 to 5 percent slopes...55 DoB Doucette loamy fine sand, 1 to 5 percent slopes...56 PK Pluck and Kian soils, frequently flooded...57 W Water...59 WoB Woodville fine sandy loam, 1 to 5 percent slopes...59 Walker County, Texas Annona association, gently undulating Annona association, gently rolling Conroe association, gently undulating Depcor-Huntsburg association, gently undulating Depcor-Huntsburg-Gunter association, gently rolling Ferris clay, 1 to 5 percent slopes Ferris clay, gullied Gladewater clay, frequently flooded Gowker and Kanebreak soils, frequently flooded Gunter association, undulating Houston Black clay, 1 to 3 percent slopes Kanebreak soils, frequently flooded Leson clay, 0 to 3 percent slopes Lufkin fine sandy loam, 0 to 1 percent slopes Nugent soils, frequently flooded Pits Redco clay, 0 to 2 percent slopes Trinity soils, frequently flooded Woden fine sandy loam, 0 to 3 percent slopes...80 M-W Miscellaneous water...81 W Water...81 Soil Information for All Uses...82 Suitabilities and Limitations for Use...82 Land Management...82 Erosion Hazard (Off-Road, Off-Trail) (WalkerMontgomeryCounties, TX)...82 Harvest Equipment Operability (WalkerMontgomeryCounties, TX)...90 References

6 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil scientists classified and named the soils in the survey area, they compared the 6

7 individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soillandscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. 7

8 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 8

9 ' 29'' W 95 33' 51'' W Custom Soil Resource Report Soil Map ' 28'' N ' 27'' N Map Scale: 1:190,000 if printed on A portrait (8.5" x 11") sheet. N Meters Feet Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS ' 29'' W ' 51'' W 30 20' 27'' N ' 28'' N

10 MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at scales ranging from 1:20,000 to 1:24,000. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Montgomery County, Texas Survey Area Data: Version 9, Dec 17, 2013 Soil Survey Area: Polk and San Jacinto Counties, Texas Survey Area Data: Version 9, Dec 12, 2013 Soil Survey Area: Walker County, Texas Survey Area Data: Version 9, Dec 12, 2013 Your area of interest (AOI) includes more than one soil survey area. These survey areas may have been mapped at different scales, with a different land use in mind, at different times, or at different levels of detail. This may result in map unit symbols, soil properties, and interpretations that do not completely agree across soil survey area boundaries. Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jan 26, 2011 Mar 6, The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

11 Map Unit Legend Montgomery County, Texas (TX339) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI Ab Landman fine sand % An Angie fine sandy loam % Bb Bibb soils, frequently flooded % BlC BlD Betis fine sand, 0 to 5 percent slopes Betis fine sand, 5 to 12 percent slopes Bo Boy loamy fine sand, 1 to 5 percent slopes Bu CnC Burleson clay, 1 to 3 percent slopes Conroe gravelly loamy fine sand, 0 to 5 percent slopes CoC Conroe loamy fine sand, 0 to 5 percent slopes CoD Conroe loamy fine sand, 5 to 12 percent slopes 2, % % 1, % % 6, % 11, % 1, % Cw Crowley fine sandy loam % Eu Betis loamy fine sand % FcC2 FcD2 Latium clay, 1 to 5 percent slopes, eroded Latium clay, 5 to 8 percent slopes, eroded FgD Latium-Gullied land complex, 3 to 8 percent slopes % % % Fs Lilbert loamy fine sand 1, % Ft Lilbert loamy fine sand, terrace % Ga Garner clay % Gu Gunter fine sand % Hs Bleiblerville clay % Kc Kaufman clay, frequently flooded KlB Crockett fine sandy loam, 1 to 3 percent slopes KpB Normangee clay loam, 1 to 3 percent slopes % % % Ks Kosse soils, frequently flooded 1, % ObC2 Woodville soils, 2 to 5 percent slopes, eroded % Oc Osier-Alaga complex % Ro Kirbyville fine sandy loam % 11

12 Montgomery County, Texas (TX339) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI Se Segno fine sandy loam % So Sorter silt loam % Sp Splendora fine sandy loam, 0 to 2 percent slopes % Ss Conroe soils % SuC Woodville fine sandy loam, 1 to 5 percent slopes SuD Th Woodville fine sandy loam, 5 to 12 percent slopes Gowker sandy clay loam, overwash 2, % % % Tk Aris loam, heavy substratum % Tu Gladewater clay, frequently flooded % W Water % Wa Waller loam % WkC Fetzer loamy fine sand, 1 to 5 percent slopes WkD Fetzer loamy fine sand, 5 to 12 percent slopes 1, % % Subtotals for Soil Survey Area 42, % Totals for Area of Interest 88, % Polk and San Jacinto Counties, Texas (TX617) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI BoB Boykin loamy fine sand, 1 to 5 percent slopes % BuD CrB Burkeville clay, 5 to 15 percent slopes Conroe gravelly loamy fine sand, 1 to 5 percent slopes DoB Doucette loamy fine sand, 1 to 5 percent slopes PK Pluck and Kian soils, frequently flooded % % % % W Water % WoB Woodville fine sandy loam, 1 to 5 percent slopes % Subtotals for Soil Survey Area % Totals for Area of Interest 88, % Walker County, Texas (TX471) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 2 Annona association, gently undulating 10, % 12

13 Walker County, Texas (TX471) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 3 Annona association, gently rolling 7 Conroe association, gently undulating 9 Depcor-Huntsburg association, gently undulating 10 Depcor-Huntsburg-Gunter association, gently rolling 2, % 1, % 13, % 2, % 16 Ferris clay, 1 to 5 percent slopes 3, % 17 Ferris clay, gullied % 19 Gladewater clay, frequently flooded 21 Gowker and Kanebreak soils, frequently flooded 1, % % 22 Gunter association, undulating % 23 Houston Black clay, 1 to 3 percent slopes 27 Kanebreak soils, frequently flooded 1, % 3, % 33 Leson clay, 0 to 3 percent slopes % 34 Lufkin fine sandy loam, 0 to 1 percent slopes % 37 Nugent soils, frequently flooded % 38 Pits % 39 Redco clay, 0 to 2 percent slopes 1, % 41 Trinity soils, frequently flooded % 42 Woden fine sandy loam, 0 to 3 percent slopes % M-W Miscellaneous water % W Water % Subtotals for Soil Survey Area 45, % Totals for Area of Interest 88, % Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend 13

14 beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha- Beta association, 0 to 2 percent slopes, is an example. 14

15 An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 15

16 Montgomery County, Texas Ab Landman fine sand Map Unit Elevation: 170 to 350 feet Mean annual precipitation: 42 to 52 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 285 days Landman, affr >30, and similar soils: 100 percent Description of Landman, Affr >30 Landform: Stream terraces Landform position (three-dimensional): Tread Across-slope shape: Convex Parent material: Loamy alluvium and/or sandy alluvium H1-0 to 47 inches: moderately acid, fine sand H2-47 to 83 inches: strongly acid, fine sandy loam Slope: 0 to 3 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: About 48 to 72 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.4 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: A An Angie fine sandy loam Map Unit Elevation: 150 to 600 feet Mean annual precipitation: 42 to 55 inches Mean annual air temperature: 61 to 70 degrees F Frost-free period: 200 to 260 days 16

17 Angie, affr 30-42, and similar soils: 100 percent Description of Angie, Affr Landform: Interfluves Landform position (two-dimensional): Toeslope Down-slope shape: Concave Across-slope shape: Linear Parent material: Loamy marine deposits and/or clayey marine deposits H1-0 to 17 inches: strongly acid, fine sandy loam H2-17 to 72 inches: very strongly acid, clay Slope: 0 to 2 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 36 to 60 inches Available water storage in profile: High (about 10.4 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C Bb Bibb soils, frequently flooded Map Unit Elevation: 50 to 450 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 59 to 72 degrees F Frost-free period: 200 to 240 days Bibb and similar soils: 95 percent Minor components: 5 percent Description of Bibb Landform: Flood plains Across-slope shape: Linear Parent material: Loamy alluvium 17

18 H1-0 to 10 inches: very strongly acid, fine sandy loam H2-10 to 63 inches: very strongly acid, loam Slope: 0 to 1 percent Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 6 to 12 inches Frequency of flooding: Frequent Available water storage in profile: Moderate (about 9.0 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: B/D Minor Components Unnamed, minor components Percent of map unit: 5 percent BlC Betis fine sand, 0 to 5 percent slopes Map Unit Elevation: 400 to 700 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 235 to 250 days Betis and similar soils: 100 percent Description of Betis Landform: Interfluves Down-slope shape: Convex Across-slope shape: Convex Parent material: Sandy marine deposits H1-0 to 10 inches: strongly acid, fine sand H2-10 to 48 inches: strongly acid, fine sand H3-48 to 80 inches: strongly acid, fine sand 18

19 Slope: 0 to 5 percent Natural drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to in/hr) Depth to water table: More than 80 inches Available water storage in profile: Low (about 5.0 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: A BlD Betis fine sand, 5 to 12 percent slopes Map Unit Elevation: 400 to 700 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 235 to 250 days Betis and similar soils: 100 percent Description of Betis Landform: Interfluves Down-slope shape: Convex Across-slope shape: Convex Parent material: Sandy marine deposits H1-0 to 10 inches: strongly acid, fine sand H2-10 to 48 inches: strongly acid, fine sand H3-48 to 80 inches: strongly acid, fine sand Slope: 5 to 12 percent Natural drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to in/hr) Depth to water table: More than 80 inches Available water storage in profile: Low (about 5.0 inches) 19

20 Land capability classification (nonirrigated): 6e Hydrologic Soil Group: A Bo Boy loamy fine sand, 1 to 5 percent slopes Map Unit Elevation: 30 to 150 feet Mean annual precipitation: 48 to 58 inches Mean annual air temperature: 67 to 69 degrees F Frost-free period: 240 to 300 days Boy and similar soils: 95 percent Minor components: 5 percent Description of Boy Landform: Interfluves Landform position (three-dimensional): Tread Across-slope shape: Convex Parent material: Loamy alluvium A - 0 to 7 inches: very strongly acid, fine sand E1-7 to 31 inches: strongly acid, fine sand E2-31 to 49 inches: strongly acid, fine sand Bt1-49 to 73 inches: strongly acid, fine sandy loam Bt2-73 to 80 inches: very strongly acid, fine sandy loam Slope: 1 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 4 to 37 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 2.0 Available water storage in profile: Low (about 4.9 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: A 20

21 Minor Components Sorter Percent of map unit: 5 percent Landform: Flats Landform position (three-dimensional): Talf Across-slope shape: Linear Bu Burleson clay, 1 to 3 percent slopes Map Unit Elevation: 120 to 970 feet Mean annual precipitation: 34 to 47 inches Mean annual air temperature: 62 to 69 degrees F Frost-free period: 228 to 239 days Burleson and similar soils: 85 percent Minor components: 15 percent Description of Burleson Landform: Stream terraces, stream terraces Landform position (three-dimensional): Tread Microfeatures of landform position: Circular gilgai, circular gilgai Across-slope shape: Linear Parent material: Calcareous clayey alluvium of pleistocene age derived from mudstone Ap - 0 to 5 inches: neutral, clay Bss - 5 to 20 inches: neutral, clay Bkss - 20 to 43 inches: moderately alkaline, clay 2Ck - 43 to 60 inches: moderately alkaline, clay Slope: 1 to 3 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 15 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum in profile:

22 Available water storage in profile: Moderate (about 9.0 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2e Hydrologic Soil Group: D Ecological site: Blackland 28-40" PZ (R086AY196TX) Minor Components Wilson Percent of map unit: 8 percent Landform: Stream terraces Landform position (three-dimensional): Tread Across-slope shape: Concave Ecological site: Claypan Prairie 28-40" PZ (R086AY200TX) Branyon Percent of map unit: 7 percent Landform: Stream terraces Landform position (three-dimensional): Tread Microfeatures of landform position: Circular gilgai Across-slope shape: Convex Ecological site: Blackland 28-40" PZ (R086AY196TX) CnC Conroe gravelly loamy fine sand, 0 to 5 percent slopes Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 41 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 238 to 283 days Conroe and similar soils: 100 percent Description of Conroe Landform: Interfluves Across-slope shape: Convex Parent material: Clayey marine deposits H1-0 to 25 inches: strongly acid, gravelly loamy fine sand H2-25 to 31 inches: very strongly acid, sandy clay loam H3-31 to 78 inches: very strongly acid, clay 22

23 H4-78 to 80 inches: very strongly acid, sandy clay Slope: 0 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.2 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B CoC Conroe loamy fine sand, 0 to 5 percent slopes Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 41 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 238 to 283 days Conroe and similar soils: 100 percent Description of Conroe Landform: Interfluves Across-slope shape: Convex Parent material: Clayey marine deposits H1-0 to 25 inches: strongly acid, loamy fine sand H2-25 to 31 inches: very strongly acid, sandy clay loam H3-31 to 78 inches: very strongly acid, clay H4-78 to 80 inches: very strongly acid, sandy clay Slope: 0 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches 23

24 Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.7 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B CoD Conroe loamy fine sand, 5 to 12 percent slopes Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 41 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 238 to 283 days Conroe and similar soils: 100 percent Description of Conroe Landform: Interfluves Across-slope shape: Convex Parent material: Clayey marine deposits H1-0 to 25 inches: strongly acid, loamy fine sand H2-25 to 31 inches: very strongly acid, sandy clay loam H3-31 to 78 inches: very strongly acid, clay H4-78 to 80 inches: very strongly acid, sandy clay Slope: 5 to 12 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.7 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: B 24

25 Cw Crowley fine sandy loam Map Unit Elevation: 10 to 80 feet Mean annual precipitation: 55 to 65 inches Mean annual air temperature: 61 to 70 degrees F Frost-free period: 235 to 300 days Crowley, affr 30-42, and similar soils: 95 percent Minor components: 5 percent Description of Crowley, Affr Landform: Meander scrolls Landform position (three-dimensional): Rise Across-slope shape: Convex Parent material: Clayey marine deposits H1-0 to 15 inches: slightly acid, silt loam H2-15 to 32 inches: slightly acid, silty clay H3-32 to 80 inches: slightly acid, silty clay Slope: 0 to 1 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 6 to 18 inches Available water storage in profile: Very high (about 12.5 inches) Land capability classification (nonirrigated): 3w Hydrologic Soil Group: D Minor Components Unnamed, hydric minor components Percent of map unit: 5 percent Landform: Depressions 25

26 Eu Betis loamy fine sand Map Unit Elevation: 400 to 700 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 235 to 250 days Betis and similar soils: 100 percent Description of Betis Landform: Interfluves Down-slope shape: Convex Across-slope shape: Convex Parent material: Sandy marine deposits H1-0 to 17 inches: strongly acid, loamy fine sand H2-17 to 63 inches: strongly acid, loamy fine sand H3-63 to 80 inches: strongly acid, loamy fine sand Slope: 0 to 5 percent Natural drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to in/hr) Depth to water table: More than 80 inches Available water storage in profile: Low (about 4.8 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: A FcC2 Latium clay, 1 to 5 percent slopes, eroded Map Unit Elevation: 150 to 600 feet Mean annual precipitation: 35 to 45 inches 26

27 Mean annual air temperature: 66 to 70 degrees F Frost-free period: 260 to 280 days Latium, eroded, and similar soils: 100 percent Description of Latium, Eroded Landform: Ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Microfeatures of landform position: Linear gilgai Across-slope shape: Convex Parent material: Residuum weathered from calcareous shale and marl in the fleming formation of miocene age H1-0 to 6 inches: moderately alkaline, clay H2-6 to 63 inches: moderately alkaline, clay H3-63 to 80 inches: moderately alkaline, clay Slope: 2 to 5 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 35 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Available water storage in profile: High (about 10.2 inches) Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Ecological site: Eroded Blackland 32-40" PZ (R086BY216TX) FcD2 Latium clay, 5 to 8 percent slopes, eroded Map Unit Elevation: 150 to 600 feet Mean annual precipitation: 35 to 45 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 260 to 280 days 27

28 Latium, eroded, and similar soils: 100 percent Description of Latium, Eroded Landform: Ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Microfeatures of landform position: Linear gilgai Across-slope shape: Convex Parent material: Residuum weathered from calcareous shale and marl in the fleming formation of miocene age H1-0 to 6 inches: moderately alkaline, clay H2-6 to 63 inches: moderately alkaline, clay H3-63 to 80 inches: moderately alkaline, clay Slope: 5 to 8 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 35 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Available water storage in profile: High (about 10.2 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Ecological site: Eroded Blackland 32-40" PZ (R086BY216TX) FgD Latium-Gullied land complex, 3 to 8 percent slopes Map Unit Elevation: 10 to 6,000 feet Mean annual precipitation: 10 to 46 inches Mean annual air temperature: 57 to 73 degrees F Frost-free period: 220 to 320 days Latium, eroded, and similar soils: 80 percent Gullied land: 20 percent 28

29 Description of Latium, Eroded Landform: Ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Microfeatures of landform position: Linear gilgai Across-slope shape: Convex Parent material: Residuum weathered from calcareous shale and marl in the fleming formation of miocene age H1-0 to 6 inches: moderately alkaline, clay H2-6 to 63 inches: moderately alkaline, clay H3-63 to 80 inches: moderately alkaline, clay Slope: 3 to 8 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 35 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Available water storage in profile: High (about 10.2 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Ecological site: Eroded Blackland 32-40" PZ (R086BY216TX) Description of Gullied Land Landform: Ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Microfeatures of landform position: Gullies Across-slope shape: Concave Parent material: Residuum weathered from calcareous clays and marl in the fleming formation of miocenea age H1-0 to 40 inches:, variable Land capability classification (nonirrigated): 7e 29

30 Fs Lilbert loamy fine sand Map Unit Elevation: 350 to 600 feet Mean annual precipitation: 40 to 50 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 240 to 275 days Lilbert and similar soils: 100 percent Description of Lilbert Landform: Interfluves Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy marine deposits H1-0 to 4 inches: strongly acid, loamy fine sand H2-4 to 23 inches: strongly acid, loamy fine sand H3-23 to 48 inches: very strongly acid, sandy clay loam H4-48 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 3 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Available water storage in profile: Moderate (about 6.6 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Ft Lilbert loamy fine sand, terrace Map Unit Elevation: 350 to 600 feet 30

31 Mean annual precipitation: 40 to 50 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 240 to 275 days Lilbert and similar soils: 100 percent Description of Lilbert Landform: Interfluves Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy marine deposits H1-0 to 4 inches: strongly acid, loamy fine sand H2-4 to 23 inches: strongly acid, loamy fine sand H3-23 to 48 inches: very strongly acid, sandy clay loam H4-48 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 2 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Available water storage in profile: Moderate (about 6.6 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Ga Garner clay Map Unit Elevation: 80 to 230 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 66 to 68 degrees F Frost-free period: 235 to 270 days Garner and similar soils: 100 percent Description of Garner Landform: Stream terraces 31

32 Across-slope shape: Linear Parent material: Clayey alluvium H1-0 to 5 inches: neutral, clay H2-5 to 60 inches: neutral, clay Slope: 0 to 1 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 10 percent Gypsum, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 4.0 Available water storage in profile: Moderate (about 9.0 inches) Land capability classification (nonirrigated): 3w Hydrologic Soil Group: D Gu Gunter fine sand Map Unit Elevation: 150 to 400 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 250 to 300 days Gunter and similar soils: 100 percent Description of Gunter Landform: Interfluves Down-slope shape: Convex Across-slope shape: Convex Parent material: Sandy marine deposits and/or loamy marine deposits H1-0 to 10 inches: strongly acid, fine sand H2-10 to 46 inches: strongly acid, fine sand H3-46 to 57 inches: strongly acid, sandy loam H4-57 to 75 inches: strongly acid, sandy clay loam 32

33 Slope: 0 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: About 42 to 60 inches Available water storage in profile: Low (about 5.3 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: A Hs Bleiblerville clay Map Unit Elevation: 200 to 550 feet Mean annual precipitation: 35 to 45 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 260 to 290 days Bleiblerville and similar soils: 100 percent Description of Bleiblerville Landform: Ridges Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Microfeatures of landform position: Circular gilgai Across-slope shape: Convex Parent material: Residuum weathered from calcareous sandstone and marl in the fleming formation of miocene age H1-0 to 10 inches: slightly alkaline, clay H2-10 to 60 inches: moderately alkaline, clay H3-60 to 80 inches: moderately alkaline, clay Slope: 1 to 3 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches 33

34 Calcium carbonate, maximum in profile: 40 percent Gypsum, maximum in profile: 10 percent Salinity, maximum in profile: Nonsaline to slightly saline (2.0 to 8.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 15.0 Available water storage in profile: High (about 10.2 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2e Hydrologic Soil Group: D Ecological site: Blackland 32-40" PZ (R086BY208TX) Kc Kaufman clay, frequently flooded Map Unit Elevation: 100 to 550 feet Mean annual precipitation: 35 to 50 inches Mean annual air temperature: 63 to 70 degrees F Frost-free period: 230 to 280 days Kaufman and similar soils: 95 percent Minor components: 5 percent Description of Kaufman Landform: Flood plains Microfeatures of landform position: Circular gilgai Across-slope shape: Linear Parent material: Clayey alluvium of holocene age derived from mixed sources H1-0 to 10 inches: neutral, clay H2-10 to 63 inches: neutral, clay Slope: 0 to 1 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Frequency of flooding: Frequent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 4.0 Available water storage in profile: Moderate (about 9.0 inches) 34

35 Land capability classification (nonirrigated): 5w Hydrologic Soil Group: D Ecological site: Clayey Bottomland 32-40" PZ (R086BY211TX) Minor Components Unnamed, minor components Percent of map unit: 5 percent KlB Crockett fine sandy loam, 1 to 3 percent slopes Map Unit Elevation: 200 to 800 feet Mean annual precipitation: 32 to 45 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 275 days Crockett and similar soils: 100 percent Description of Crockett Landform: Ridges Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Across-slope shape: Convex Parent material: Residuum weathered from shale of tertiary age H1-0 to 7 inches: neutral, fine sandy loam H2-7 to 14 inches: slightly acid, clay H3-14 to 50 inches: neutral, clay Slope: 1 to 3 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum in profile:

36 Available water storage in profile: Low (about 5.9 inches) Land capability classification (nonirrigated): 3e Hydrologic Soil Group: D Ecological site: Claypan Prairie 32-40" PZ (R086BY214TX) KpB Normangee clay loam, 1 to 3 percent slopes Map Unit Elevation: 350 to 800 feet Mean annual precipitation: 32 to 42 inches Mean annual air temperature: 63 to 70 degrees F Frost-free period: 220 to 270 days Normangee and similar soils: 100 percent Description of Normangee Landform: Ridges Landform position (two-dimensional): Summit, shoulder Landform position (three-dimensional): Interfluve Across-slope shape: Convex Parent material: Residuum weathered from shale in the cook mountain and wilcox formations of eocene age H1-0 to 7 inches: slightly acid, clay loam H2-7 to 50 inches: neutral, clay Slope: 1 to 3 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 5 percent Gypsum, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline to slightly saline (2.0 to 8.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 10.0 Available water storage in profile: Moderate (about 7.7 inches) 36

37 Land capability classification (nonirrigated): 3e Hydrologic Soil Group: D Ecological site: Claypan Prairie 32-40" PZ (R086BY214TX) Ks Kosse soils, frequently flooded Map Unit Elevation: 140 to 190 feet Mean annual precipitation: 40 to 46 inches Mean annual air temperature: 66 to 68 degrees F Frost-free period: 230 to 240 days Kosse and similar soils: 100 percent Description of Kosse Landform: Flood plains Across-slope shape: Linear Parent material: Loamy alluvium H1-0 to 18 inches: neutral, clay loam H2-18 to 48 inches: neutral, clay loam H3-48 to 60 inches: slightly alkaline, fine sandy loam Slope: 0 to 1 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: About 42 to 72 inches Frequency of flooding: Occasional Calcium carbonate, maximum in profile: 30 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 4.0 Available water storage in profile: Moderate (about 9.0 inches) Land capability classification (nonirrigated): 2w Hydrologic Soil Group: C 37

38 ObC2 Woodville soils, 2 to 5 percent slopes, eroded Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 270 days Woodville and similar soils: 100 percent Description of Woodville Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Clayey marine deposits H1-0 to 4 inches: strongly acid, loam H2-4 to 48 inches: very strongly acid, clay H3-48 to 60 inches: neutral, clay Slope: 2 to 5 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.0 inches) Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) 38

39 Oc Osier-Alaga complex Map Unit Elevation: 20 to 450 feet Mean annual precipitation: 45 to 64 inches Mean annual air temperature: 61 to 70 degrees F Frost-free period: 220 to 285 days Osier and similar soils: 40 percent Alaga and similar soils: 30 percent Minor components: 30 percent Description of Osier Landform: Stream terraces Down-slope shape: Convex Across-slope shape: Linear Parent material: Sandy alluvium H1-0 to 5 inches: very strongly acid, sand H2-5 to 46 inches: very strongly acid, sand H3-46 to 63 inches: very strongly acid, sand Slope: 0 to 1 percent Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to in/hr) Depth to water table: About 0 to 6 inches Frequency of flooding: Rare Available water storage in profile: Low (about 3.8 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: A/D Description of Alaga Landform: Stream terraces on coastal plains Parent material: Sandy alluvium H1-0 to 5 inches: very strongly acid, fine sand H2-5 to 80 inches: very strongly acid, fine sand 39

40 Slope: 0 to 1 percent Natural drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to in/hr) Depth to water table: More than 80 inches Frequency of flooding: Rare Available water storage in profile: Low (about 4.2 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: A Minor Components Unnamed, minor components Percent of map unit: 30 percent Ro Kirbyville fine sandy loam Map Unit Elevation: 60 to 200 feet Mean annual precipitation: 40 to 55 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 240 to 260 days Kirbyville and similar soils: 100 percent Description of Kirbyville Landform: Flats Landform position (three-dimensional): Rise Across-slope shape: Convex Parent material: Loamy fluviomarine deposits of early pleistocene age H1-0 to 27 inches: strongly acid, fine sandy loam H2-27 to 60 inches: very strongly acid, sandy clay loam Slope: 0 to 1 percent Natural drainage class: Moderately well drained 40

41 Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 18 to 30 inches Available water storage in profile: High (about 9.4 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2w Hydrologic Soil Group: B Se Segno fine sandy loam Map Unit Elevation: 100 to 400 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 260 to 300 days Segno and similar soils: 100 percent Description of Segno Landform: Low hills Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy marine deposits H1-0 to 4 inches: strongly acid, fine sandy loam H2-4 to 14 inches: strongly acid, fine sandy loam H3-14 to 44 inches: strongly acid, sandy clay loam H4-44 to 80 inches: strongly acid, sandy clay loam Slope: 0 to 2 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.20 to 1.98 in/hr) Depth to water table: About 24 to 36 inches Available water storage in profile: Moderate (about 7.3 inches) Farmland classification: All areas are prime farmland 41

42 Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C So Sorter silt loam Map Unit Elevation: 50 to 400 feet Mean annual precipitation: 46 to 56 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 235 to 270 days Sorter and similar soils: 90 percent Minor components: 10 percent Description of Sorter Landform: Flats Landform position (three-dimensional): Talf Across-slope shape: Linear Parent material: Loamy fluviomarine deposits of early pleistocene age H1-0 to 19 inches: strongly acid, silt loam H2-19 to 68 inches: strongly acid, silt loam H3-68 to 80 inches: slightly acid, very fine sandy loam Slope: 0 to 1 percent Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 0 inches Frequency of flooding: Occasional Frequency of ponding: Frequent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 2.0 Available water storage in profile: High (about 10.8 inches) Land capability classification (nonirrigated): 4w Hydrologic Soil Group: C/D Minor Components Unnamed, minor components Percent of map unit: 10 percent 42

43 Sp Splendora fine sandy loam, 0 to 2 percent slopes Map Unit Elevation: 80 to 400 feet Mean annual precipitation: 48 to 58 inches Mean annual air temperature: 67 to 68 degrees F Frost-free period: 240 to 300 days Splendora and similar soils: 90 percent Minor components: 10 percent Description of Splendora Landform: Flatwoods Across-slope shape: Convex Parent material: Loamy fluviomarine deposits of early pleistocene age A - 0 to 6 inches: very strongly acid, fine sandy loam E - 6 to 15 inches: strongly acid, fine sandy loam Bt/E - 15 to 28 inches: very strongly acid, loam Bt - 28 to 70 inches: very strongly acid, loam Btg - 70 to 80 inches: very strongly acid, sandy clay loam Slope: 0 to 2 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 10 to 32 inches Available water storage in profile: High (about 10.0 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2w Hydrologic Soil Group: C/D Minor Components Waller Percent of map unit: 7 percent Landform: Flats Landform position (three-dimensional): Talf 43

44 Across-slope shape: Linear Segno Percent of map unit: 3 percent Landform: Interfluves Landform position (two-dimensional): Backslope, shoulder Landform position (three-dimensional): Side slope Across-slope shape: Convex Ss Conroe soils Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 260 to 285 days Conroe and similar soils: 100 percent Description of Conroe Landform: Interfluves Across-slope shape: Convex Parent material: Clayey marine deposits H1-0 to 5 inches: strongly acid, sandy clay loam H2-5 to 52 inches: very strongly acid, sandy clay H3-52 to 70 inches: very strongly acid, sandy clay Slope: 2 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.8 inches) Land capability classification (nonirrigated): 6e 44

45 Hydrologic Soil Group: D SuC Woodville fine sandy loam, 1 to 5 percent slopes Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 270 days Woodville and similar soils: 100 percent Description of Woodville Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Clayey marine deposits H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 48 inches: very strongly acid, clay H3-48 to 80 inches: neutral, clay Slope: 1 to 5 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.1 inches) Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) 45

46 SuD Woodville fine sandy loam, 5 to 12 percent slopes Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 270 days Woodville and similar soils: 100 percent Description of Woodville Landform: Interfluves Across-slope shape: Convex Parent material: Clayey marine deposits H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 48 inches: very strongly acid, clay H3-48 to 80 inches: neutral, clay Slope: 5 to 12 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.1 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) 46

47 Th Gowker sandy clay loam, overwash Map Unit Elevation: 50 to 300 feet Mean annual precipitation: 40 to 50 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 270 days Gowker and similar soils: 100 percent Description of Gowker Landform: Flood plains Across-slope shape: Linear Parent material: Loamy alluvium of holocene age derived from mixed sources H1-0 to 16 inches: slightly acid, sandy clay loam H2-16 to 60 inches: slightly acid, clay Slope: 0 to 1 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 6 to 30 inches Frequency of flooding: Frequent Available water storage in profile: High (about 9.6 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: C/D Ecological site: Loamy Bottomland 32-40" PZ (R086BY219TX) Tk Aris loam, heavy substratum Map Unit Elevation: 10 to 40 feet Mean annual precipitation: 50 to 62 inches Mean annual air temperature: 70 to 72 degrees F 47

48 Frost-free period: 250 to 280 days Aris and similar soils: 90 percent Minor components: 10 percent Description of Aris Landform: Flats Landform position (three-dimensional): Talf Across-slope shape: Linear Parent material: Loamy fluviomarine deposits of late pleistocene age H1-0 to 15 inches: moderately acid, loam H2-15 to 37 inches: strongly acid, clay loam H3-37 to 78 inches: slightly acid, clay Slope: 0 to 1 percent Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 0 to 24 inches Sodium adsorption ratio, maximum in profile: 6.0 Available water storage in profile: Moderate (about 8.7 inches) Land capability classification (irrigated): 4w Land capability classification (nonirrigated): 4w Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 10 percent Tu Gladewater clay, frequently flooded Map Unit Elevation: 200 to 400 feet Mean annual precipitation: 38 to 46 inches Mean annual air temperature: 64 to 68 degrees F Frost-free period: 235 to 275 days 48

49 Gladewater and similar soils: 95 percent Minor components: 5 percent Description of Gladewater Landform: Flood plains Microfeatures of landform position: Circular gilgai Across-slope shape: Concave Parent material: Clayey alluvium of holocene age drived from mixed sources H1-0 to 6 inches: slightly acid, clay H2-6 to 65 inches: strongly acid, clay H3-65 to 80 inches: slightly acid, clay loam Slope: 0 to 1 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 18 to 42 inches Frequency of flooding: Frequent Gypsum, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 10.2 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: D Ecological site: Clayey Bottomland 32-40" PZ (R086BY211TX) Minor Components Unnamed, minor components Percent of map unit: 5 percent W Water Water: 100 percent 49

50 Wa Waller loam Map Unit Elevation: 20 to 400 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 245 to 285 days Waller and similar soils: 98 percent Minor components: 2 percent Description of Waller Landform: Flats Landform position (three-dimensional): Talf Across-slope shape: Linear Parent material: Loamy fluviomarine deposits of early pleistocene age H1-0 to 4 inches: strongly acid, loam H2-4 to 34 inches: strongly acid, loam H3-34 to 80 inches: moderately acid, clay loam Slope: 0 to 1 percent Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 0 to 30 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 10.8 inches) Farmland classification: Prime farmland if drained Land capability classification (irrigated): 4w Land capability classification (nonirrigated): 4w Hydrologic Soil Group: C/D Minor Components Unnamed, minor components Percent of map unit: 2 percent 50

51 WkC Fetzer loamy fine sand, 1 to 5 percent slopes Map Unit Elevation: 100 to 450 feet Mean annual precipitation: 41 to 46 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 260 to 285 days Fetzer and similar soils: 100 percent Description of Fetzer Landform: Interfluves Across-slope shape: Concave Parent material: Clayey marine deposits and/or loamy marine deposits H1-0 to 29 inches: strongly acid, loamy fine sand H2-29 to 35 inches: strongly acid, sandy clay loam H3-35 to 80 inches: slightly acid, clay Slope: 1 to 5 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 18 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 7.2 inches) Land capability classification (nonirrigated): 3e Hydrologic Soil Group: A WkD Fetzer loamy fine sand, 5 to 12 percent slopes Map Unit Elevation: 100 to 450 feet 51

52 Mean annual precipitation: 41 to 46 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 260 to 285 days Fetzer and similar soils: 100 percent Description of Fetzer Landform: Interfluves Across-slope shape: Concave Parent material: Clayey marine deposits and/or loamy marine deposits H1-0 to 29 inches: strongly acid, loamy fine sand H2-29 to 35 inches: strongly acid, sandy clay loam H3-35 to 80 inches: slightly acid, clay Slope: 5 to 8 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 18 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 7.2 inches) Land capability classification (nonirrigated): 3e Hydrologic Soil Group: A 52

53 Polk and San Jacinto Counties, Texas BoB Boykin loamy fine sand, 1 to 5 percent slopes Map Unit Elevation: 100 to 700 feet Mean annual precipitation: 40 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 260 days Boykin and similar soils: 70 percent Minor components: 30 percent Description of Boykin Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 8 inches: strongly acid, loamy fine sand H2-8 to 24 inches: strongly acid, loamy fine sand H3-24 to 80 inches: strongly acid, sandy clay loam Slope: 1 to 5 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.3 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Minor Components Betis Percent of map unit: 10 percent Choates Percent of map unit: 10 percent Doucette Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) 53

54 BuD Burkeville clay, 5 to 15 percent slopes Map Unit Elevation: 80 to 450 feet Mean annual precipitation: 40 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 235 to 270 days Burkeville and similar soils: 60 percent Minor components: 40 percent Description of Burkeville Landform: Interfluves Across-slope shape: Linear Parent material: Clayey residuum H1-0 to 5 inches: moderately alkaline, clay H2-5 to 65 inches: moderately alkaline, clay Slope: 5 to 15 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 10 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.6 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Minor Components Wiergate Percent of map unit: 20 percent Garner Percent of map unit: 15 percent 54

55 Woodville Percent of map unit: 5 percent Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) CrB Conroe gravelly loamy fine sand, 1 to 5 percent slopes Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 41 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 283 days Conroe and similar soils: 80 percent Minor components: 20 percent Description of Conroe Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 25 inches: strongly acid, gravelly loamy fine sand H2-25 to 31 inches: very strongly acid, sandy clay loam H3-31 to 78 inches: very strongly acid, sandy clay H4-78 to 80 inches: very strongly acid, sandy clay Slope: 1 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.2 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B 55

56 Minor Components Pinetucky Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Boykin Percent of map unit: 5 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Betis Percent of map unit: 5 percent DoB Doucette loamy fine sand, 1 to 5 percent slopes Map Unit Elevation: 100 to 300 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 260 days Doucette and similar soils: 70 percent Minor components: 30 percent Description of Doucette Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 12 inches: moderately acid, loamy fine sand H2-12 to 24 inches: moderately acid, loamy fine sand H3-24 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 5 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.3 inches) 56

57 Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Minor Components Boykin Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Choates Percent of map unit: 10 percent Pinetucky Percent of map unit: 5 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Woodville Percent of map unit: 5 percent Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) PK Pluck and Kian soils, frequently flooded Map Unit Elevation: 50 to 400 feet Mean annual precipitation: 40 to 55 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 220 to 270 days Pluck and similar soils: 45 percent Kian and similar soils: 30 percent Minor components: 25 percent Description of Pluck Landform: Flood plains Across-slope shape: Concave Parent material: Loamy alluvium of holocene age H1-0 to 6 inches: moderately acid, fine sandy loam H2-6 to 26 inches: slightly acid, fine sandy loam H3-26 to 35 inches: slightly acid, sandy clay loam H4-35 to 52 inches: slightly acid, sandy clay loam 57

58 H5-52 to 65 inches: neutral, silty clay loam Slope: 0 to 1 percent Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 0 to 18 inches Frequency of flooding: Frequent Available water storage in profile: Moderate (about 9.0 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: B/D Description of Kian Landform: Flood plains Across-slope shape: Concave Parent material: Loamy alluvium of holocene age H1-0 to 4 inches: slightly acid, fine sandy loam H2-4 to 26 inches: slightly acid, fine sandy loam H3-26 to 52 inches: slightly acid, fine sandy loam H4-52 to 65 inches: neutral, clay loam Slope: 0 to 1 percent Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 0 to 18 inches Frequency of flooding: Frequent Available water storage in profile: Moderate (about 8.0 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: A/D Minor Components Unnamed, minor components Percent of map unit: 25 percent 58

59 W Water Water: 100 percent WoB Woodville fine sandy loam, 1 to 5 percent slopes Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 270 days Woodville and similar soils: 80 percent Minor components: 20 percent Description of Woodville Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Clayey residuum H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 65 inches: very strongly acid, clay H3-65 to 80 inches: neutral, clay Slope: 1 to 5 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.1 inches) Land capability classification (nonirrigated): 4e 59

60 Hydrologic Soil Group: D Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) Minor Components Unnamed, minor components Percent of map unit: 20 percent 60

61 Walker County, Texas 2 Annona association, gently undulating Map Unit Elevation: 200 to 500 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 64 to 68 degrees F Frost-free period: 230 to 280 days Annona and similar soils: 80 percent Minor components: 20 percent Description of Annona Landform: Stream terraces Across-slope shape: Linear Parent material: Clayey alluvium H1-0 to 4 inches: strongly acid, fine sandy loam H2-4 to 44 inches: strongly acid, clay H3-44 to 80 inches: neutral, clay Slope: 1 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 5 percent Gypsum, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 8.9 inches) Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 20 percent 61

62 3 Annona association, gently rolling Map Unit Elevation: 200 to 500 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 64 to 68 degrees F Frost-free period: 230 to 280 days Annona and similar soils: 85 percent Minor components: 15 percent Description of Annona Landform: Stream terraces Across-slope shape: Linear Parent material: Clayey alluvium H1-0 to 4 inches: strongly acid, fine sandy loam H2-4 to 44 inches: strongly acid, clay H3-44 to 80 inches: neutral, clay Slope: 5 to 8 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 5 percent Gypsum, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 8.9 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 15 percent 62

63 7 Conroe association, gently undulating Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 41 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 238 to 283 days Conroe and similar soils: 85 percent Minor components: 15 percent Description of Conroe Landform: Interfluves Across-slope shape: Convex Parent material: Clayey marine deposits H1-0 to 28 inches: strongly acid, loamy fine sand H2-28 to 33 inches: very strongly acid, sandy clay loam H3-33 to 70 inches: very strongly acid, clay H4-70 to 74 inches: very strongly acid, sandy clay Slope: 1 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.7 inches) Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Minor Components Unnamed, minor components Percent of map unit: 15 percent 63

64 9 Depcor-Huntsburg association, gently undulating Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 283 days Depcor, affr >30, and similar soils: 54 percent Huntsburg and similar soils: 31 percent Minor components: 15 percent Description of Depcor, Affr >30 Landform: Interfluves Across-slope shape: Convex Parent material: Marine deposits H1-0 to 26 inches: strongly acid, loamy fine sand H2-26 to 65 inches: strongly acid, sandy clay loam H3-65 to 80 inches: strongly acid, sandy clay loam Slope: 1 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.7 inches) Land capability classification (nonirrigated): 3e Hydrologic Soil Group: A Ecological site: Pinus taeda-pinus echinata/callicarpa americana/schizachyrium scoparium var. divergens (F133BY003TX) Description of Huntsburg Landform: Interfluves 64

65 Parent material: Clayey marine deposits H1-0 to 14 inches: slightly acid, loamy fine sand H2-14 to 22 inches: very strongly acid, sandy clay H3-22 to 72 inches: very strongly acid, clay Slope: 1 to 5 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 6 to 18 inches Available water storage in profile: Moderate (about 7.6 inches) Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 15 percent 10 Depcor-Huntsburg-Gunter association, gently rolling Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 300 days Depcor, affr >30, and similar soils: 40 percent Huntsburg and similar soils: 23 percent Gunter and similar soils: 22 percent Minor components: 15 percent Description of Depcor, Affr >30 Landform: Interfluves Across-slope shape: Convex Parent material: Loamy marine deposits 65

66 H1-0 to 30 inches: strongly acid, loamy fine sand H2-30 to 66 inches: strongly acid, sandy clay loam H3-66 to 80 inches: strongly acid, sandy clay loam Slope: 5 to 12 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.6 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: A Ecological site: Pinus taeda-pinus echinata/callicarpa americana/schizachyrium scoparium var. divergens (F133BY003TX) Description of Huntsburg Landform: Interfluves Parent material: Clayey marine deposits H1-0 to 14 inches: slightly acid, loamy fine sand H2-14 to 22 inches: very strongly acid, sandy clay H3-22 to 72 inches: very strongly acid, clay Slope: 5 to 8 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 6 to 18 inches Available water storage in profile: Moderate (about 7.6 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Description of Gunter Landform: Interfluves 66

67 Parent material: Sandy marine deposits and/or loamy marine deposits H1-0 to 48 inches: strongly acid, loamy sand H2-48 to 60 inches: strongly acid, loamy sand H3-60 to 75 inches: strongly acid, loamy fine sand H4-75 to 80 inches: strongly acid, sandy loam Slope: 5 to 8 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: About 42 to 60 inches Available water storage in profile: Low (about 5.7 inches) Land capability classification (nonirrigated): 4s Hydrologic Soil Group: A Minor Components Unnamed, minor components Percent of map unit: 15 percent 16 Ferris clay, 1 to 5 percent slopes Map Unit Elevation: 400 to 1,000 feet Mean annual precipitation: 28 to 42 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 260 days Ferris and similar soils: 75 percent Minor components: 25 percent Description of Ferris Landform: Ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Microfeatures of landform position: Linear gilgai 67

68 Across-slope shape: Convex Parent material: Residuum weathered from calcareous shale in eagleford shale and taylor marl formations of cretaceous age H1-0 to 8 inches: moderately alkaline, clay H2-8 to 40 inches: moderately alkaline, clay H3-40 to 66 inches: moderately alkaline, very shaly clay Slope: 1 to 5 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 30 percent Gypsum, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 5.0 Available water storage in profile: Moderate (about 8.7 inches) Land capability classification (nonirrigated): 3e Hydrologic Soil Group: D Ecological site: Eroded Blackland 32-40" PZ (R086BY216TX) Minor Components Unnamed, minor components Percent of map unit: 25 percent 17 Ferris clay, gullied Map Unit Elevation: 400 to 1,000 feet Mean annual precipitation: 28 to 42 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 260 days Ferris, severely eroded, and similar soils: 85 percent Minor components: 15 percent 68

69 Description of Ferris, Severely Eroded Landform: Ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Microfeatures of landform position: Linear gilgai Across-slope shape: Convex Parent material: Residuum weathered from calcareous shale in eagleford shale and taylor marl formations of cretaceous age H1-0 to 6 inches: moderately alkaline, clay H2-6 to 40 inches: moderately alkaline, clay H3-40 to 70 inches: moderately alkaline, extremely shaly clay Slope: 3 to 8 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 30 percent Gypsum, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 5.0 Available water storage in profile: Moderate (about 8.7 inches) Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Ecological site: Eroded Blackland 32-40" PZ (R086BY216TX) Minor Components Unnamed, minor components Percent of map unit: 15 percent 19 Gladewater clay, frequently flooded Map Unit Elevation: 200 to 400 feet Mean annual precipitation: 38 to 46 inches Mean annual air temperature: 64 to 68 degrees F 69

70 Frost-free period: 235 to 275 days Gladewater and similar soils: 90 percent Minor components: 10 percent Description of Gladewater Landform: Flood plains Across-slope shape: Linear Parent material: Clayey alluvium H1-0 to 6 inches: slightly acid, clay H2-6 to 65 inches: strongly acid, clay H3-65 to 80 inches: slightly acid, clay loam Slope: 0 to 1 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 18 to 42 inches Frequency of flooding: Frequent Gypsum, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 10.2 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 10 percent 21 Gowker and Kanebreak soils, frequently flooded Map Unit Elevation: 50 to 300 feet Mean annual precipitation: 40 to 50 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 270 days 70

71 Gowker and similar soils: 45 percent Kanebreak and similar soils: 40 percent Minor components: 15 percent Description of Gowker Landform: Flood plains Across-slope shape: Linear Parent material: Loamy alluvium H1-0 to 30 inches: slightly acid, clay loam H2-30 to 44 inches: slightly acid, clay loam H3-44 to 60 inches: neutral, clay Slope: 0 to 1 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 6 to 30 inches Frequency of flooding: Frequent Gypsum, maximum in profile: 2 percent Available water storage in profile: High (about 9.6 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: C/D Description of Kanebreak Landform: Flood plains Parent material: Loamy alluvium H1-0 to 8 inches: slightly acid, fine sandy loam H2-8 to 28 inches: neutral, sandy clay loam H3-28 to 70 inches: neutral, fine sandy loam Slope: 0 to 1 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 0 to 18 inches Frequency of flooding: Frequent Calcium carbonate, maximum in profile: 1 percent 71

72 Available water storage in profile: Moderate (about 8.3 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: C/D Ecological site: Quercus phellos/justicia ovata (F133BY009TX) Minor Components Unnamed, minor components Percent of map unit: 15 percent 22 Gunter association, undulating Map Unit Elevation: 150 to 400 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 250 to 300 days Gunter and similar soils: 67 percent Minor components: 33 percent Description of Gunter Landform: Interfluves Down-slope shape: Convex Across-slope shape: Convex Parent material: Sandy marine deposits and/or loamy marine deposits H1-0 to 48 inches: strongly acid, loamy sand H2-48 to 60 inches: strongly acid, loamy sand H3-60 to 75 inches: strongly acid, sandy loam H4-75 to 80 inches: strongly acid, sandy clay loam Slope: 1 to 8 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: About 42 to 60 inches Available water storage in profile: Low (about 5.7 inches) 72

73 Land capability classification (nonirrigated): 3s Hydrologic Soil Group: A Minor Components Unnamed, minor components Percent of map unit: 33 percent 23 Houston Black clay, 1 to 3 percent slopes Map Unit Elevation: 400 to 1,000 feet Mean annual precipitation: 28 to 42 inches Mean annual air temperature: 63 to 70 degrees F Frost-free period: 220 to 250 days Houston black and similar soils: 75 percent Minor components: 25 percent Description of Houston Black Landform: Ridges Landform position (two-dimensional): Shoulder, summit Landform position (three-dimensional): Interfluve Microfeatures of landform position: Circular gilgai Down-slope shape: Convex Across-slope shape: Convex Parent material: Residuum weathered from calcareous shale of taylor marl and eagleford shale H1-0 to 8 inches: moderately alkaline, clay H2-8 to 38 inches: moderately alkaline, clay H3-38 to 80 inches: moderately alkaline, clay Slope: 1 to 3 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Calcium carbonate, maximum in profile: 40 percent 73

74 Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 2.0 Available water storage in profile: Moderate (about 8.8 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2e Hydrologic Soil Group: D Ecological site: Blackland 32-40" PZ (R086BY208TX) Minor Components Unnamed, minor components Percent of map unit: 25 percent 27 Kanebreak soils, frequently flooded Map Unit Elevation: 150 to 200 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 260 to 270 days Kanebreak, affr >30, and similar soils: 90 percent Minor components: 10 percent Description of Kanebreak, Affr >30 Landform: Flood plains Across-slope shape: Linear Parent material: Loamy alluvium H1-0 to 8 inches: slightly acid, fine sandy loam H2-8 to 28 inches: neutral, sandy clay loam H3-28 to 70 inches: neutral, fine sandy loam Slope: 0 to 1 percent Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 0 to 18 inches Frequency of flooding: Frequent Calcium carbonate, maximum in profile: 1 percent 74

75 Available water storage in profile: Moderate (about 8.3 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: C/D Ecological site: Quercus phellos/justicia ovata (F133BY009TX) Minor Components Unnamed, minor components Percent of map unit: 10 percent 33 Leson clay, 0 to 3 percent slopes Map Unit Elevation: 350 to 750 feet Mean annual precipitation: 34 to 44 inches Mean annual air temperature: 63 to 70 degrees F Frost-free period: 230 to 260 days Leson and similar soils: 83 percent Minor components: 17 percent Description of Leson Landform: Ridges Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Across-slope shape: Convex Parent material: Residuum weathered from calcareous shale in the fleming formation of miocene age H1-0 to 5 inches: neutral, clay H2-5 to 30 inches: neutral, clay H3-30 to 60 inches: slightly alkaline, clay Slope: 0 to 3 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches 75

76 Calcium carbonate, maximum in profile: 30 percent Gypsum, maximum in profile: 5 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 1.0 Available water storage in profile: Moderate (about 9.0 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2e Hydrologic Soil Group: D Ecological site: Blackland 32-40" PZ (R086BY208TX) Minor Components Unnamed, minor components Percent of map unit: 17 percent 34 Lufkin fine sandy loam, 0 to 1 percent slopes Map Unit Elevation: 230 to 500 feet Mean annual precipitation: 32 to 40 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 275 days Lufkin and similar soils: 95 percent Minor components: 5 percent Description of Lufkin Landform: Stream terraces Landform position (three-dimensional): Tread Across-slope shape: Concave Parent material: Clayey alluvium of pleistocene age derived from mixed sources H1-0 to 9 inches: moderately acid, fine sandy loam H2-9 to 55 inches: slightly acid, clay H3-55 to 75 inches: neutral, clay loam Slope: 0 to 1 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches 76

77 Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 10.0 Available water storage in profile: Moderate (about 7.5 inches) Land capability classification (nonirrigated): 3w Hydrologic Soil Group: D Ecological site: Claypan Savannah 28-40" PZ (R087AY221TX) Minor Components Unnamed, hydric minor components Percent of map unit: 5 percent Landform: Depressions 37 Nugent soils, frequently flooded Map Unit Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 64 to 68 degrees F Frost-free period: 235 to 260 days Nugent and similar soils: 90 percent Minor components: 10 percent Description of Nugent Landform: Flood plains Across-slope shape: Linear Parent material: Sandy alluvium H1-0 to 10 inches: strongly acid, loamy sand H2-10 to 41 inches: strongly acid, loamy fine sand H3-41 to 48 inches: strongly acid, silt loam H4-48 to 80 inches: strongly acid, loamy sand Slope: 0 to 1 percent Natural drainage class: Excessively drained Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) Depth to water table: About 42 to 72 inches Frequency of flooding: Frequent 77

78 Available water storage in profile: Low (about 5.9 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: A Minor Components Unnamed, minor components Percent of map unit: 10 percent 38 Pits Map Unit Elevation: 20 to 8,750 feet Mean annual precipitation: 9 to 56 inches Mean annual air temperature: 54 to 73 degrees F Frost-free period: 180 to 350 days Pits: 100 percent Description of Pits H1-0 to 80 inches: slightly acid, variable Land capability classification (nonirrigated): 8s Hydrologic Soil Group: D 39 Redco clay, 0 to 2 percent slopes Map Unit Elevation: 150 to 400 feet Mean annual precipitation: 45 to 55 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 265 days Redco and similar soils: 80 percent Minor components: 20 percent 78

79 Description of Redco Landform: Interfluves Across-slope shape: Linear Parent material: Clayey residuum weathered from shale H1-0 to 7 inches: moderately acid, clay H2-7 to 40 inches: strongly acid, clay H3-40 to 72 inches: neutral, clay Slope: 0 to 2 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.9 inches) Land capability classification (nonirrigated): 3e Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 20 percent 41 Trinity soils, frequently flooded Map Unit Elevation: 100 to 550 feet Mean annual precipitation: 34 to 52 inches Mean annual air temperature: 63 to 70 degrees F Frost-free period: 230 to 280 days Trinity, affr 25-30, and similar soils: 90 percent Minor components: 10 percent 79

80 Description of Trinity, Affr Landform: Flood plains Across-slope shape: Linear Parent material: Clayey alluvium of holocene age H1-0 to 11 inches: moderately alkaline, clay H2-11 to 60 inches: moderately alkaline, clay Slope: 0 to 1 percent Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Frequency of flooding: Frequent Calcium carbonate, maximum in profile: 15 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.6 inches) Land capability classification (nonirrigated): 5w Hydrologic Soil Group: D Minor Components Unnamed, hydric minor components Percent of map unit: 10 percent Landform: Flood plains 42 Woden fine sandy loam, 0 to 3 percent slopes Map Unit Elevation: 100 to 300 feet Mean annual precipitation: 40 to 50 inches Mean annual air temperature: 64 to 68 degrees F Frost-free period: 235 to 260 days Woden and similar soils: 85 percent Minor components: 15 percent 80

81 Description of Woden Landform: Stream terraces Across-slope shape: Convex Parent material: Loamy alluvium H1-0 to 20 inches: moderately acid, fine sandy loam H2-20 to 80 inches: moderately acid, fine sandy loam Slope: 0 to 3 percent Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) Depth to water table: More than 80 inches Available water storage in profile: Moderate (about 8.8 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2e Hydrologic Soil Group: A Minor Components Unnamed, minor components Percent of map unit: 15 percent M-W Miscellaneous water Water, miscellaneous: 100 percent W Water Water: 100 percent 81

82 Soil Information for All Uses Suitabilities and Limitations for Use The Suitabilities and Limitations for Use section includes various soil interpretations displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each interpretation. Land Management Land management interpretations are tools designed to guide the user in evaluating existing conditions in planning and predicting the soil response to various land management practices, for a variety of land uses, including cropland, forestland, hayland, pastureland, horticulture, and rangeland. Example interpretations include suitability for a variety of irrigation practices, log landings, haul roads and major skid trails, equipment operability, site preparation, suitability for hand and mechanical planting, potential erosion hazard associated with various practices, and ratings for fencing and waterline installation. Erosion Hazard (Off-Road, Off-Trail) (WalkerMontgomeryCounties, TX) The ratings in this interpretation indicate the hazard of soil loss from off-road and offtrail areas after disturbance activities that expose the soil surface. The ratings are based on slope and soil erosion factor K. The soil loss is caused by sheet or rill erosion in off-road or off-trail areas where 50 to 75 percent of the surface has been exposed by logging, grazing, mining, or other kinds of disturbance. The ratings are both verbal and numerical. The hazard is described as "slight," "moderate," "severe," or "very severe." A rating of "slight" indicates that erosion is unlikely under ordinary climatic conditions; "moderate" indicates that some erosion is likely and that erosion-control measures may be needed; "severe" indicates that erosion is very likely and that erosion-control measures, including revegetation of bare areas, are advised; and "very severe" indicates that significant erosion is expected, loss of soil productivity and off-site damage are likely, and erosion-control measures are costly and generally impractical. 82

83 Numerical ratings indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to They indicate gradations between the point at which a soil feature has the greatest negative impact on the specified aspect of forestland management (1.00) and the point at which the soil feature is not a limitation (0.00). The map unit components listed for each map unit in the accompanying Summary by Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are determined by the aggregation method chosen. An aggregated rating class is shown for each map unit. The components listed for each map unit are only those that have the same rating class as listed for the map unit. The percent composition of each component in a particular map unit is presented to help the user better understand the percentage of each map unit that has the rating presented. Other components with different ratings may be present in each map unit. The ratings for all components, regardless of the map unit aggregated rating, can be viewed by generating the equivalent report from the Soil Reports tab in Web Soil Survey or from the Soil Data Mart site. Onsite investigation may be needed to validate these interpretations and to confirm the identity of the soil on a given site. 83

84 ' 29'' W 95 33' 51'' W Custom Soil Resource Report Map Erosion Hazard (Off-Road, Off-Trail) (WalkerMontgomeryCounties, TX) ' 28'' N ' 27'' N Map Scale: 1:190,000 if printed on A portrait (8.5" x 11") sheet. N Meters Feet Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS ' 29'' W ' 51'' W 30 20' 27'' N ' 28'' N

85 MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons Very severe Severe Moderate Slight Not rated or not available Soil Rating Lines Very severe Severe Moderate Slight Not rated or not available Soil Rating Points Very severe Severe Moderate Slight Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at scales ranging from 1:20,000 to 1:24,000. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Montgomery County, Texas Survey Area Data: Version 9, Dec 17, 2013 Soil Survey Area: Polk and San Jacinto Counties, Texas Survey Area Data: Version 9, Dec 12, 2013 Soil Survey Area: Walker County, Texas Survey Area Data: Version 9, Dec 12, 2013 Your area of interest (AOI) includes more than one soil survey area. These survey areas may have been mapped at different scales, with a different land use in mind, at different times, or at different levels of detail. This may result in map unit symbols, soil properties, and interpretations that do not completely agree across soil survey area boundaries. Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jan 26, 2011 Mar 6, The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

86 Tables Erosion Hazard (Off-Road, Off-Trail) (WalkerMontgomeryCounties, TX) Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Montgomery County, Texas (TX339) Map unit symbol Map unit name Rating Component name (percent) Ab An Bb Landman fine sand Angie fine sandy loam Bibb soils, frequently flooded BlC Betis fine sand, 0 to 5 percent slopes BlD Betis fine sand, 5 to 12 percent slopes Bo Boy loamy fine sand, 1 to 5 percent slopes Bu Burleson clay, 1 to 3 percent slopes CnC CoC CoD Cw Eu Conroe gravelly loamy fine sand, 0 to 5 percent slopes Conroe loamy fine sand, 0 to 5 percent slopes Conroe loamy fine sand, 5 to 12 percent slopes Crowley fine sandy loam Betis loamy fine sand FcC2 Latium clay, 1 to 5 percent slopes, eroded FcD2 Latium clay, 5 to 8 percent slopes, eroded FgD Fs Latium-Gullied land complex, 3 to 8 percent slopes Lilbert loamy fine sand Slight Slight Landman, AFFR >30 (100%) Angie, AFFR (100%) Rating reasons (numeric values) Acres in AOI Percent of AOI % % Slight Bibb (95%) % Slight Betis (100%) 2, % Slight Betis (100%) % Slight Boy (95%) 1, % Sorter (5%) Slight Burleson (85%) % Wilson (8%) Branyon (7%) Slight Conroe (100%) 6, % Slight Conroe (100%) 11, % Slight Conroe (100%) 1, % Slight Crowley, AFFR (95%) % Slight Betis (100%) % Slight Slight Slight Latium, eroded (100%) Latium, eroded (100%) Latium, eroded (80%) % % % Slight Lilbert (100%) 1, % 86

87 Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Montgomery County, Texas (TX339) Map unit symbol Map unit name Rating Component name (percent) Ft Lilbert loamy fine sand, terrace Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Lilbert (100%) % Ga Garner clay Slight Garner (100%) % Gu Gunter fine sand Slight Gunter (100%) % Hs Bleiblerville clay Slight Bleiblerville (100%) Kc KlB KpB Ks Kaufman clay, frequently flooded Crockett fine sandy loam, 1 to 3 percent slopes Normangee clay loam, 1 to 3 percent slopes Kosse soils, frequently flooded ObC2 Woodville soils, 2 to 5 percent slopes, eroded Oc Ro Se Osier-Alaga complex Kirbyville fine sandy loam Segno fine sandy loam % Slight Kaufman (95%) % Slight Crockett (100%) % Slight Normangee (100%) % Slight Kosse (100%) 1, % Slight Woodville (100%) % Slight Osier (40%) % Alaga (30%) Slight Kirbyville (100%) % Slight Segno (100%) % So Sorter silt loam Slight Sorter (90%) % Sp Splendora fine sandy loam, 0 to 2 percent slopes Slight Splendora (90%) % Waller (7%) Segno (3%) Ss Conroe soils Slight Conroe (100%) % SuC SuD Th Tk Tu Woodville fine sandy loam, 1 to 5 percent slopes Woodville fine sandy loam, 5 to 12 percent slopes Gowker sandy clay loam, overwash Aris loam, heavy substratum Gladewater clay, frequently flooded Slight Woodville (100%) 2, % Slight Woodville (100%) % Slight Gowker (100%) % Slight Aris (90%) % Slight Gladewater (95%) % 87

88 Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Montgomery County, Texas (TX339) Map unit symbol Map unit name Rating Component name (percent) Rating reasons (numeric values) Acres in AOI Percent of AOI W Water Not rated Water (100%) % Wa Waller loam Slight Waller (98%) % WkC WkD Fetzer loamy fine sand, 1 to 5 percent slopes Fetzer loamy fine sand, 5 to 12 percent slopes Slight Fetzer (100%) 1, % Slight Fetzer (100%) % Subtotals for Soil Survey Area 42, % Totals for Area of Interest 88, % Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Polk and San Jacinto Counties, Texas (TX617) Map unit symbol Map unit name Rating Component name (percent) BoB Boykin loamy fine sand, 1 to 5 percent slopes BuD Burkeville clay, 5 to 15 percent slopes CrB DoB PK Conroe gravelly loamy fine sand, 1 to 5 percent slopes Doucette loamy fine sand, 1 to 5 percent slopes Pluck and Kian soils, frequently flooded Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Boykin (70%) % Betis (10%) Choates (10%) Doucette (10%) Slight Burkeville (60%) % Wiergate (20%) Garner (15%) Slight Conroe (80%) % Pinetucky (10%) Slight Doucette (70%) % Boykin (10%) Choates (10%) Slight Pluck (45%) % Kian (30%) W Water Not rated Water (100%) % WoB Woodville fine sandy loam, 1 to 5 percent slopes Slight Woodville (80%) % Subtotals for Soil Survey Area % Totals for Area of Interest 88, % Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Walker County, Texas (TX471) Map unit symbol Map unit name Rating Component name (percent) 2 Annona association, gently undulating Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Annona (80%) 10, % 88

89 Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Walker County, Texas (TX471) Map unit symbol Map unit name Rating Component name (percent) 3 Annona association, gently rolling 7 Conroe association, gently undulating 9 Depcor- Huntsburg association, gently undulating 10 Depcor- Huntsburg- Gunter association, gently rolling 16 Ferris clay, 1 to 5 percent slopes 17 Ferris clay, gullied 19 Gladewater clay, frequently flooded 21 Gowker and Kanebreak soils, frequently flooded 22 Gunter association, undulating 23 Houston Black clay, 1 to 3 percent slopes 27 Kanebreak soils, frequently flooded 33 Leson clay, 0 to 3 percent slopes 34 Lufkin fine sandy loam, 0 to 1 percent slopes 37 Nugent soils, frequently flooded Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Annona (85%) 2, % Slight Conroe (85%) 1, % Slight Slight Depcor, AFFR >30 (54%) Huntsburg (31%) Depcor, AFFR >30 (40%) Huntsburg (23%) Gunter (22%) 13, % 2, % Slight Ferris (75%) 3, % Slight Slight Ferris, severely eroded (85%) Gladewater (90%) % 1, % Slight Gowker (45%) % Kanebreak (40%) Slight Gunter (67%) % Slight Slight Houston Black (75%) Kanebreak, AFFR >30 (90%) 1, % 3, % Slight Leson (83%) % Slight Lufkin (95%) % Slight Nugent (90%) % 38 Pits Not rated Pits (100%) % 39 Redco clay, 0 to 2 percent slopes 41 Trinity soils, frequently flooded Slight Redco (80%) 1, % Slight Trinity, AFFR (90%) % 89

90 Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Walker County, Texas (TX471) Map unit symbol Map unit name Rating Component name (percent) 42 Woden fine sandy loam, 0 to 3 percent slopes M-W Miscellaneous water Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Woden (85%) % Not rated Water, miscellaneous (100%) % W Water Not rated Water (100%) % Subtotals for Soil Survey Area 45, % Totals for Area of Interest 88, % Erosion Hazard (Off-Road, Off-Trail) Summary by Rating Value Rating Acres in AOI Percent of AOI Slight 87, % Null or Not Rated % Totals for Area of Interest 88, % Rating Options Erosion Hazard (Off-Road, Off-Trail) (WalkerMontgomeryCounties, TX) Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Harvest Equipment Operability (WalkerMontgomeryCounties, TX) Ratings for this interpretation indicate the suitability for use of forestland harvesting equipment. The ratings are based on slope, rock fragments on the surface, plasticity index, content of sand, the Unified classification of the soil, depth to a water table, and ponding. Standard rubber-tire skidders and bulldozers are assumed to be used for ground-based harvesting and transport. The ratings are both verbal and numerical. Rating class terms indicate the degree to which the soils are suited to this aspect of forestland management. "Well suited" indicates that the soil has features that are favorable for the specified management aspect and has no limitations. Good performance can be expected, and little or no maintenance is needed. "Moderately suited" indicates that the soil has features that are moderately favorable for the specified management aspect. One or more soil properties are less than desirable, and fair performance can be expected. Some maintenance is needed. "Poorly suited" indicates that the soil has one or more properties that are unfavorable for the specified management aspect. Overcoming the unfavorable properties requires special design, extra maintenance, and costly alteration. 90

91 Numerical ratings indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to They indicate gradations between the point at which a soil feature has the greatest negative impact on the specified aspect of forestland management (1.00) and the point at which the soil feature is not a limitation (0.00). The map unit components listed for each map unit in the accompanying Summary by Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are determined by the aggregation method chosen. An aggregated rating class is shown for each map unit. The components listed for each map unit are only those that have the same rating class as listed for the map unit. The percent composition of each component in a particular map unit is presented to help the user better understand the percentage of each map unit that has the rating presented. Other components with different ratings may be present in each map unit. The ratings for all components, regardless of the map unit aggregated rating, can be viewed by generating the equivalent report from the Soil Reports tab in Web Soil Survey or from the Soil Data Mart site. Onsite investigation may be needed to validate these interpretations and to confirm the identity of the soil on a given site. 91

92 ' 29'' W 95 33' 51'' W Custom Soil Resource Report Map Harvest Equipment Operability (WalkerMontgomeryCounties, TX) ' 28'' N ' 27'' N Map Scale: 1:190,000 if printed on A portrait (8.5" x 11") sheet. N Meters Feet Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS ' 29'' W ' 51'' W 30 20' 27'' N ' 28'' N