SAN GORGONIO PASS CAMPUS - PHASE I

Size: px
Start display at page:

Download "SAN GORGONIO PASS CAMPUS - PHASE I"

Transcription

1 SAN GORGONIO PASS CAMPUS - PHASE I Banning, CA DRAINAGE STUDY June 16, 2010 Reference PREPARED BY: Encompass Associates, Inc Cousins Place Rancho Cucamonga, CA Fax askeers@encompasscivil.com

2 SAN GORGONIO PASS CAMPUS - PHASE I Banning, CA DRAINAGE STUDY June 16, 2010 Reference PREPARED BY: Encompass Associates, Inc Cousins Place Rancho Cucamonga, CA Fax Aaron T. Skeers R.C.E Exp. 9/30/11 Date askeers@encompasscivil.com

3 CONTENTS SECTION TITLE A DISCUSSION Vicinity Map Index Map Q Q100 HYDROLOGY U UNIT HYDROGRAPH AND FLOOD ROUTING CALCULATIONS H STORM DRAIN HYDRAULICS R REFERENCES & MAPS Soils Map (from County Hydrology Manual) Isohyetal Map (from County Hydrology Manual) Hydrology Map

4 DISCUSSION The purpose of this drainage study is to determine the drainage facility requirements for San Gorgonio Pass Campus - Phase I in Banning. Specifically, the subject project is located south of Westward Avenue, west of vacant grassland, north of vacant grassland, and east of Sunset Avenue, in the City of Banning, County of San Bernardino, California. The subject site will consist of Phase I of a planned community college campus, including a parking lot, administration building, restroom building, and two classroom buildings, with an approximate area of 4 acres. Proposed drainage is overland and by sheet flow generally in a southerly direction.. The site is not subject to off-site runoff. The 100-year storm event was modeled in the rational method hydrology and synthetic unit hydrograph calculations in this study. Flood routing was conducted to assess the impact the project will have on downstream properties. Coincidental to 100-year runoff mitigation, the project must also address smaller storm impacts as part of the city and county water quality management program. The project WQMP identifies the facilities required to address those concerns, and the infiltration detention basin identified therein also fully captures the 100- year 3-hour storm modeled in this study. Therefore, the WQ infiltration detention basin will also provide adequate protection for downstream properties. The rational method and synthetic unit hydrologic models, as defined by Flood Control for Riverside County, were followed in the determination of storm runoff.

5 [project] Drainage Study RATIONAL METHOD HYDROLOGY Encompass Associates, Inc. Q-1 12/21/2011

6 Encompass Associates, Inc. Job San Gorgonio Pass Civil Engineers Sheet No. of 5699 Cousins Place Calculated by: Date 6/22/10 Rancho Cucamonga, CA Checked by: Date (909) Fax Scale Time of Concentration Calculation Sheet Initial Time of Concentration Area Upper EL Lower EL Length Slope Land Use Ap Tc (min) Com P:\ \Drainage\Drainage-UHinput-PhI.xls Printed: 3:48 PM-12/21/ of 1

7 Encompass Associates, Inc. Job San Gorgonio Pass Civil Engineers Sheet No. of 5699 Cousins Place Calculated by: Date 6/22/10 Rancho Cucamonga, CA Checked by: Date (909) Fax Scale RATIONAL METHOD CALCULATION FORM (Plate D-2 RCFC&WCD Manual) Drainage Soil & A I C DQ SQ Slope Section v L T ST Remarks Area Development Acres in/hr CFS CFS FPS FT. Min. Min. 1:Node 1->2 B-Com Initial area "1" Section: pipe size (inches) 2:Node 2->3 B-Ap60% : B-Ap60% Confluence at previous Tc P:\ \Drainage\Drainage-UHinput-PhI.xls Printed: 3:49 PM-12/21/ of 1

8 San Gorgonio Pass Campus Drainage Study SYNTHETIC UNIT HYDROGRAPH CALCULATIONS AND DETENTION BASIN FLOOD ROUTING ANALYSIS Encompass Associates, Inc. U-1 12/21/2011

9 Encompass Associates, Inc. Job San Gorgonio Pass Civil Engineers Sheet No. of 5699 Cousins Place Calculated by: Date 6/22/10 Rancho Cucamonga, CA Checked by: Date (909) Fax Scale nts Rainfall Intensity Data Slope of Intensity/Duration curve 0.53 Duration Return Period (year) hr slope Area Reduction Factor 0.99 =values taken from Isohyetals, County Hydrology Manual All other values "interpolated" using logarithmic equations as follows: --> Exp( +/- Slope x Ln(T des) + Ln(ref I) -/+ Slope x Ln(ref T)) --> I100 - I10 / Ln(100/10) x Ln(des Period / 10) + I10

10 Encompass Associates, Inc. Job Civil Engineers Sheet No. of 5699 Cousins Place Calculated by: Date Rancho Cucamonga, CA Checked by: Date (909) Fax Scale Unit Hydrograph and Effective Rainfall - Calculation Form (Plate E-2.2 RCFC&WCD Manual) 1 Concentration Point 3 2 Area Designation A 3 Drainage Area (Acres) 4 4 Ultimate Discharge n/a 5 Unit Time (Minutes) 15 6 Lag Time (Minutes) 5 7 Unit Time (% of Lag) n/a 8 S-Curve n/a 9 Storm Frequency/Duration (Yr/Hr) Total Adjusted Storm Rain Variable Loss Rate-Avg (In/hr) n/a 12 Minimum Loss Rate (Var. Ln/a 13 Constant Loss Rate (In/hr) Low Loss Rate (%) 90 Flood Effective Loss Effective Hydrograph Rain Storm Rate Rain Flow Pattern Rain in/hr in/hr cfs % in/hr Max Low n/a Summary Total Eff Effective Rain 8.38 in/hr Effective Rain = 2.10 inches Flood Volume = 0.70 ac-ft P:\ \Drainage\Drainage-UHinput-PhI.xls Printed: 3:50 PM-12/21/ of 1

11 San Gorgonio Pass MJSC/Banning 6/22/2010 Low Loss Fraction & Maximum Loss RaPhase I Set # Cover Area % Soil Area % CN-II CN-III Ap % S Ia Y Y (wt) Y Y (wt) Y Y (wt) Y Y (wt) Fp(C-6) Fm Fm (wt) School B (AutoCalc: Impervious) (1.6) (0.4) Fm= 0.27 P-24= 6.00 in Low Loss Fraction,Y-bar = Return Period 100 AMC Type III (I,II or III) Est Vol = 1 ac-ft Lag Time 24-hr Rainfall (other than 100 yr) T I (yr) (in) Tc = 7.6 min from Rational Method Study Lag = 6.1 min Run: Lag = 0.1 hr Tributary area Drainage-UHinput-PhI.xls 12/21/2011

12 Detention Basin Geometry San Gorgonio Pass Campus /22/2010 side slopes 3 :1 Bottom Footprint~ 0.29 ac Max depth ft Wetted Footprint~ 0.43 ac Total Footprint ~ 0.67 ac Basis EL LenA LenB 2409 SA Base SB 160 Depth Base B1 B2 BaseT PondedA A1 A2 AT PondedB B1 B2 BT Area Del V Volume ft ft ft ft ft ft ft ft ft ft ft ft ft sf cf cf ac-ft P:\ \Drainage\FloodRouting-Ph1.xls 12/21/2011

13 Detention Basin Outlet Hydraulics San Gorgonio Pass Campus /22/2010 Weir (Overflow) Standpipe C 3.3 weir C 3.3 weir C (orifice) C 0.6 (orifice) C= L (eff) 5 ft Dia 1.5 ft H (eff) ft " spacing Bottom EL 3.00 ft Rim EL 999 ft (n/a) Lower Orifice Standpipe Summary Standpipe Total Elevation Head Orifice Weir Head Weir Orifice Control Elevation Outflow Outflow Volume ft ft cfs cfs ft cfs cfs cfs ft cfs ac-ft n/a n/a n/a n/a n/a n/a n/a n/a n/a P:\ \Drainage\FloodRouting-Ph1.xls 12/21/2011

14

15

16 REFERENCES & MAPS 12/21/11 R-1

17

18

HYDROLOGY STUDY PREPARED FOR: MARKHAM PERRIS LLC 302 WEST FIFTH STREET, SUITE 103 SAN PEDRO, CA (310) FOR THE PROJECT:

HYDROLOGY STUDY PREPARED FOR: MARKHAM PERRIS LLC 302 WEST FIFTH STREET, SUITE 103 SAN PEDRO, CA (310) FOR THE PROJECT: HYDROLOGY STUDY PREPARED FOR: MARKHAM PERRIS LLC 302 WEST FIFTH STREET, SUITE 103 SAN PEDRO, CA 90731 (310) 241-2992 FOR THE PROJECT: PERRIS VALLEY COMMERCE CENTER BUILDING PERRIS, CALIFORNIA PROJECT NUMBER:

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT GREENE COUNTY ASH POND ALABMA POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT GREENE COUNTY ASH POND ALABMA POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT GREENE COUNTY ASH POND ALABMA POWER COMPANY Section 257.82 of EPA s regulations requires the owner or operator of an existing or new CCR surface impoundment

More information

Appendix B. Storm Drain System Data

Appendix B. Storm Drain System Data MENIFEE VALLEY CAMPUS MASTER PLAN FINAL EIR MT. SAN JACINTO COMMUNITY COLLEGE DISTRICT Appendix Appendix B. Storm Drain System Data June 2017 MENIFEE VALLEY CAMPUS MASTER PLAN FINAL EIR MT. SAN JACINTO

More information

Hydrologic Study Report for Single Lot Detention Basin Analysis

Hydrologic Study Report for Single Lot Detention Basin Analysis Hydrologic Study Report for Single Lot Detention Basin Analysis Prepared for: City of Vista, California August 18, 2006 Tory R. Walker, R.C.E. 45005 President W.O. 116-01 01/23/2007 Table of Contents Page

More information

RETENTION BASIN EXAMPLE

RETENTION BASIN EXAMPLE -7 Given: Total Tributary Area = 7.5 ac o Tributary Area within Existing R/W = 5.8 ac o Tributary Area, Impervious, Outside of R/W = 0.0 ac o Tributary Area, Pervious, Outside of R/W = 1.7 ac o Tributary

More information

Drainage Analysis. Appendix E

Drainage Analysis. Appendix E Drainage Analysis Appendix E The existing and proposed storm drainage systems have been modeled with Bentley CivilStorm V8 computer modeling software. The peak stormwater discharge was determined for

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT BARRY ASH POND ALABAMA POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT BARRY ASH POND ALABAMA POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT BARRY ASH POND ALABAMA POWER COMPANY Section 257.82 of EPA s regulations requires the owner or operator of an existing or new CCR surface impoundment or any

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT YATES ASH POND 3 (AP-3) GEORGIA POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT YATES ASH POND 3 (AP-3) GEORGIA POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART 257.82 PLANT YATES ASH POND 3 (AP-3) GEORGIA POWER COMPANY EPA s Disposal of Coal Combustion Residuals from Electric Utilities Final Rule (40 C.F.R.

More information

Summary of Detention Pond Calculation Canyon Estates American Canyon, California

Summary of Detention Pond Calculation Canyon Estates American Canyon, California July 15, 2015 Bellecci & Associates, Inc Summary of Detention Pond Calculation Canyon Estates American Canyon, California 1. Methodology: Method: Unit Hydrograph Software: Bentley Pond Pack Version 8i

More information

PRELIMINARY DRAINAGE STUDY

PRELIMINARY DRAINAGE STUDY PRELIMINARY DRAINAGE STUDY For 34 th & J Residences 3402 J St. San Diego, CA 92102 A.P.N 545-250-08 Prepared By: Kenneth J. Discenza, P.E. Site Design Associates, Inc. 1016 Broadway, Suite A El Cajon,

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. Part PLANT MCINTOSH ASH POND 1 GEORGIA POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. Part PLANT MCINTOSH ASH POND 1 GEORGIA POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. Part 257.82 PLANT MCINTOSH ASH POND 1 GEORGIA POWER COMPANY EPA s Disposal of Coal Combustion Residuals from Electric Utilities Final Rule (40 C.F.R. Part

More information

Design of Stormwater Wetlands

Design of Stormwater Wetlands Hydraulic & Hydrologic Stormwater Engineering Design of Stormwater Wetlands Jon Hathaway, EI Extension Associate NCSU Bio. And Ag. Engineering 6 Step Process 1. Watershed Analysis (Runoff Volume and Peak

More information

Hydrology Study. For Bella Terrazza Portion of Lot 1, Block 39, Subdivision of S Tract, Rancho El Cajon El Cajon, CA 92021

Hydrology Study. For Bella Terrazza Portion of Lot 1, Block 39, Subdivision of S Tract, Rancho El Cajon El Cajon, CA 92021 Hydrology Study For Bella Terrazza Portion of Lot 1, Block 39, Subdivision of S Tract, Rancho El Cajon El Cajon, CA 92021 Prepared for Daryl Priest - Priest Development Corporation 124 West Main Street,

More information

BMP Design Aids. w w w. t r a n s p o r t a t i o n. o h i o. g o v. Equations / Programs

BMP Design Aids. w w w. t r a n s p o r t a t i o n. o h i o. g o v. Equations / Programs BMP Design Aids 1 Equations / Programs Outlet Discharge Equations Hydrograph and Pond Routing Programs USGS StreamStats 2 Ohio Department of Transportation 1 Training Intent Introduction and overview of

More information

INITIAL RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART 257

INITIAL RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART 257 INITIAL RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART 257.81 HUFFAKER ROAD (PLANT HAMMOND) PRIVATE INDUSTRIAL LANDFILL (HUFFAKER ROAD LANDFILL) GEORGIA POWER COMPANY EPA s Disposal of Coal Combustion

More information

PRELIMINARY HYDROLOGY STUDY

PRELIMINARY HYDROLOGY STUDY PRELIMINARY HYDROLOGY STUDY FOR Tentative Tract Map West Side of Loma Alta Drive City of Oceanside, CA Prepared For: EMERALD HILLS LLC 4272 Dogwood Avenue Seal Beach, CA 90740 Contact: Mr. Jimmy Chen Ph:

More information

Extended Detention Basin Design

Extended Detention Basin Design Extended Detention Basin Design 1 Extended Detention 2 Ohio Department of Transportation 1 Extended Detention Basin L&D Vol. 2 Section 1117.3 Provides quality and quantity treatment 3 Extended Detention

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT BOWEN ASH POND 1 (AP-1) GEORGIA POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT BOWEN ASH POND 1 (AP-1) GEORGIA POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART 257.82 PLANT BOWEN ASH POND 1 (AP-1) GEORGIA POWER COMPANY EPA s Disposal of Coal Combustion Residuals from Electric Utilities Final Rule (40 C.F.R.

More information

Detention Pond Design Considering Varying Design Storms. Receiving Water Effects of Water Pollutant Discharges

Detention Pond Design Considering Varying Design Storms. Receiving Water Effects of Water Pollutant Discharges Detention Pond Design Considering Varying Design Storms Land Development Results in Increased Peak Flow Rates and Runoff Volumes Developed area Robert Pitt Department of Civil, Construction and Environmental

More information

Example 1: Pond Design in a residential development (Water Quantity calculations for a Wet Pond and Wet Extended Detention Pond)

Example 1: Pond Design in a residential development (Water Quantity calculations for a Wet Pond and Wet Extended Detention Pond) Chapter 10 Design Examples Example 1: Pond Design in a residential development (Water Quantity calculations for a Wet Pond and Wet Extended Detention Pond) Example 2: Filter Design in a commercial development

More information

INITIAL RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART 257

INITIAL RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART 257 INITIAL RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART 257.81 PLANT BOWEN PRIVATE INDUSTRY SOLID WASTE DISPOSAL FACILITY (ASH LANDFILL) GEORGIA POWER COMPANY EPA s Disposal of Coal Combustion Residuals

More information

LIST OF TABLES... ii LIST OF FIGURES... iii LIST OF APPENDICES... iv. Section 1 - Introduction Purpose of Study... 1

LIST OF TABLES... ii LIST OF FIGURES... iii LIST OF APPENDICES... iv. Section 1 - Introduction Purpose of Study... 1 Preliminary Hydrologic Analysis for Alberhill Villages April 2015 TABLE OF CONTENTS Section Name Page Number LIST OF TABLES... ii LIST OF FIGURES... iii LIST OF APPENDICES... iv Section 1 - Introduction...

More information

APPENDIX IV. APPROVED METHODS FOR QUANTIFYING HYDROLOGIC CONDITIONS OF CONCERN (NORTH ORANGE COUNTY)

APPENDIX IV. APPROVED METHODS FOR QUANTIFYING HYDROLOGIC CONDITIONS OF CONCERN (NORTH ORANGE COUNTY) APPENDIX IV. APPROVED METHODS FOR QUANTIFYING HYDROLOGIC CONDITIONS OF CONCERN (NORTH ORANGE COUNTY) Hydromodification design criteria for the North Orange County permit area are based on the 2- yr, 24-hr

More information

Appendix F. Flow Duration Basin Design Guidance

Appendix F. Flow Duration Basin Design Guidance Appendix F Flow Duration Basin Design Guidance Appendix F FINAL REPORT F:\SC46\SC46.31\HMP Mar 05\Appendices\Appendix F FLY_HMP.doc MARCH 2005 Appendix F Flow Duration Basin Design Guidance Prepared by

More information

DETENTION BASIN DESIGN USING RATIONAL HYDROGRAPHS

DETENTION BASIN DESIGN USING RATIONAL HYDROGRAPHS DETENTION BASIN DESIGN USING RATIONAL HYDROGRAPHS By Thomas F. Smith, P.E., P.L.S. Bercek and Smith Engineering, Inc. www.bercekandsmith.com tfsmith2@bercekandsmith.com 1 Topics Covered: 2 1 Attributed

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT GASTON GYPSUM POND ALABAMA POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT GASTON GYPSUM POND ALABAMA POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT GASTON GYPSUM POND ALABAMA POWER COMPANY Section 257.82 of EPA s regulations requires the owner or operator of an existing or new CCR surface impoundment or

More information

Appendix E.2 Preliminary Hydrology Report

Appendix E.2 Preliminary Hydrology Report Appendix E.2 Preliminary Hydrology Report PRELIMINARY HYDROLOGY STUDY HARVARD WESTLAKE SCHOOL PARKING STRUCTURE 3700 Coldwater Canyon North Hollywood, CA 91604 KPFF Job # 109046 August 12, 2013 CLIENT:

More information

APPENDIX K OPERATIONS AND FINAL COVER SURFACE WATER MANAGEMENT SYSTEM DESIGN

APPENDIX K OPERATIONS AND FINAL COVER SURFACE WATER MANAGEMENT SYSTEM DESIGN ONONDAGA LAKE SEDIMENT CONSOLIDATION AREA CIVIL & GEOTECHNICAL FINAL DESIGN APPENDIX K OPERATIONS AND FINAL COVER SURFACE WATER MANAGEMENT SYSTEM DESIGN PARSONS P:\Honeywell -SYR\44483 - Lake Detail Design\9

More information

Design Example Residential Subdivision

Design Example Residential Subdivision Design Example Residential Subdivision Rhode Island Stormwater Design and Installation Standards Manual December 2010 Public Training March 22, 2010 Richard Claytor, P.E. 508-833-6600 Appendix D: Site

More information

San Francisco State University Site 1 Vegetated Infiltration Basin Monitoring Report: Rainy Seasons and

San Francisco State University Site 1 Vegetated Infiltration Basin Monitoring Report: Rainy Seasons and San Francisco State University Site 1 Vegetated Infiltration Basin Monitoring Report: Rainy Seasons 2011-12 and 2012-13 Project Overview San Francisco State University (SFSU) has implemented several green

More information

Applying the Water Quality Volume

Applying the Water Quality Volume Applying the Water Quality Volume Justin Reinhart, PE Division of Surface Water Northeast Ohio Stormwater Training Council Cleveland, Ohio & Richfield, Ohio July 12, 2018 July 25, 2018 Post-Construction

More information

PRELIMINARY DRAINAGE REPORT FOR THE EDI MASTER PLAN

PRELIMINARY DRAINAGE REPORT FOR THE EDI MASTER PLAN PRELIMINARY DRAINAGE REPORT FOR THE EDI MASTER PLAN April 5, 2015 Wayne W. Chang, MS, PE 46548 Chang Civil Engineering Hydrology Hydraulics Sedimentation P.O. Box 9496 Rancho Santa Fe, CA 92067 (858) 692-0760

More information

Learn how to design inlet grates, detention basins, channels, and riprap using the FHWA Hydraulic Toolbox and WMS

Learn how to design inlet grates, detention basins, channels, and riprap using the FHWA Hydraulic Toolbox and WMS v. 11.0 WMS 11.0 Tutorial Learn how to design inlet grates, detention basins, channels, and riprap using the FHWA Hydraulic Toolbox and WMS Objectives Learn how to use several Hydraulic Toolbox calculators

More information

INITIAL INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT MCMANUS ASH POND A (AP-1) 40 CFR

INITIAL INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT MCMANUS ASH POND A (AP-1) 40 CFR INITIAL INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN PLANT MCMANUS ASH POND A (AP-1) 40 CFR 257.82 EPA s Disposal of Coal Combustion Residuals from Electric Utilities Final Rule (40 C.F.R. Part 257 and Part

More information

Final Drainage Report

Final Drainage Report Thornton Electric Substation Project Final Drainage Report December 14, 2016 DRAFT Prepared for: Xcel Energy, 1800 Larimer Street, Suite 400, Denver, Colorado 80202 Prepared by: 350 Indiana Street, Suite

More information

Rainfall, Runoff and Peak Flows: Calibration of Hydrologic Design Methods for the Kansas City Area

Rainfall, Runoff and Peak Flows: Calibration of Hydrologic Design Methods for the Kansas City Area Rainfall, Runoff and Peak Flows: Calibration of Hydrologic Design Methods for the Kansas City Area Bruce McEnroe, Bryan Young, Ricardo Gamarra and Ryan Pohl Department of Civil, Environmental, and Architectural

More information

Preliminary Drainage Analysis

Preliminary Drainage Analysis Preliminary Drainage Analysis Tanimura and Antle Employee Housing Town of Spreckels County of Monterey, California LIB150205 May 29, 2015 Prepared For: Tanimura and Antle Produce Prepared By: 9699 Blue

More information

1. Stream Network. The most common approach to quantitatively describing stream networks was postulated by Strahler (1952).

1. Stream Network. The most common approach to quantitatively describing stream networks was postulated by Strahler (1952). 1. Stream Network The most common approach to quantitatively describing stream networks was postulated by Strahler (1952). First Order Streams streams with no tributaries. Second Order Streams begin at

More information

November 21, City of Thornton 9500 Civic Center Drive Thornton, CO (303) RE: Maverik Thornton, CO - Drainage Report

November 21, City of Thornton 9500 Civic Center Drive Thornton, CO (303) RE: Maverik Thornton, CO - Drainage Report November 21, 2016 City of Thornton 9500 Civic Center Drive Thornton, CO 80229 (303) 538-7295 RE: Maverik Thornton, CO - Drainage Report As per your request, we are submitting to you the drainage report

More information

Inflow Design Flood Control System Plan

Inflow Design Flood Control System Plan Inflow Design Flood Control System Plan Scrubber Ponds Lewis and Clark Station Prepared for Montana-Dakota Utilities Co. October 2016 Paul T. Swenson 2016.10.14 17:54:29-05'00' 234 West Century Avenue

More information

Runoff Hydrographs. The Unit Hydrograph Approach

Runoff Hydrographs. The Unit Hydrograph Approach Runoff Hydrographs The Unit Hydrograph Approach Announcements HW#6 assigned Storm Water Hydrographs Graphically represent runoff rates vs. time Peak runoff rates Volume of runoff Measured hydrographs are

More information

TECHNICAL BULLETIN. Synthetic Turf Athletic Field Drainage Design Assistance

TECHNICAL BULLETIN. Synthetic Turf Athletic Field Drainage Design Assistance TECHNICAL BULLETIN Synthetic Turf Athletic Field Drainage Design Assistance The SportsEdge HQ geocomposite strip drain products are engineered specifically for use in synthetic turf athletic field base

More information

HYDROLOGY STUDY LA MIRADA BOULEVARD La Mirada, California

HYDROLOGY STUDY LA MIRADA BOULEVARD La Mirada, California HYDROLOGY STUDY 12000 LA MIRADA BOULEVARD La Mirada, California TTM 73119 Prepared for: The Olson Company 3010 Old Ranch Parkway, Suite 100 Seal Beach, CA 90740 Contact: Mr. Aaron Orenstein (562) 370-9531

More information

RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART PLANT DANIEL NORTH ASH MANAGEMENT UNIT MISSISSIPPI POWER COMPANY

RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART PLANT DANIEL NORTH ASH MANAGEMENT UNIT MISSISSIPPI POWER COMPANY RUN-ON AND RUN-OFF CONTROL PLAN 40 C.F.R. PART 257.81 PLANT DANIEL NORTH ASH MANAGEMENT UNIT MISSISSIPPI POWER COMPANY EPA s Disposal of Coal Combustion Residuals from Electric Utilities Final Rule (40

More information

Treatment Volume: Curve Numbers. Composite CN or Not? Treatment Volume: Curve Numbers. Treatment Volume: Calculation. Treatment Volume: Calculation

Treatment Volume: Curve Numbers. Composite CN or Not? Treatment Volume: Curve Numbers. Treatment Volume: Calculation. Treatment Volume: Calculation Stormwater Engineering Bioretention Design Bill Hunt, PE, Ph.D. Extension Specialist & Assistant Professor NCSU-BAE www.bae.ncsu.edu/stormwater Bioretention Design Six Step Process 1 Determine Volume to

More information

HYDROLOGIC-HYDRAULIC STUDY ISABELLA OCEAN RESIDENCES ISLA VERDE, CAROLINA, PR

HYDROLOGIC-HYDRAULIC STUDY ISABELLA OCEAN RESIDENCES ISLA VERDE, CAROLINA, PR HYDROLOGIC-HYDRAULIC STUDY ISABELLA OCEAN RESIDENCES ISLA VERDE, CAROLINA, PR 1 INTRODUCTION 1.1 Project Description and Location Isabella Ocean Residences is a residential development to be constructed

More information

Water Resources Management Plan

Water Resources Management Plan P L Y M O U T H M I N N E S O T A Appendix D: The developed a to analyze and minimize the impact of existing and future development on the City s natural resources. It is important to the City to have

More information

Modeling Infiltration BMPs

Modeling Infiltration BMPs Modeling Infiltration BMPs CAHILL ASSOCIATES Environmental Consultants West Chester, PA (610) 696-4150 www.thcahill.com Design Goals for Calculations 1. Mitigate Peak Rates 2-Year to 100-Year 2. No Volume

More information

Modeling the Hydrologic Impacts of Control Structures Utilizing LiDAR, ICPR, and GIS Technologies

Modeling the Hydrologic Impacts of Control Structures Utilizing LiDAR, ICPR, and GIS Technologies Modeling the Hydrologic Impacts of Control Structures Utilizing LiDAR, ICPR, and GIS Technologies Keanan Bell NorthStar June 12, 2015 Project began in 2010 as a Hydrology Assessment and Conceptual Restoration

More information

100-yr Design Runoff (cfs) Basin ID 103b A a B B C Totals

100-yr Design Runoff (cfs) Basin ID 103b A a B B C Totals PROPOSED DEVELOPMENT The drainage for this site has been designed to be less than the maximum allowable runoff from each basin as stated in the Overall Rigden Farm drainage plan. Table 1 compares the actual

More information

SITE HYDROLOGY. Created by PRE-CONSTRUCTION S>30% 10<S<30 5<S<10 0<S<5 .35>C>.28.28>C>.20.20>C>.14.14>C>.08 NO SOIL CLAY WELL DRAINED SAND

SITE HYDROLOGY. Created by PRE-CONSTRUCTION S>30% 10<S<30 5<S<10 0<S<5 .35>C>.28.28>C>.20.20>C>.14.14>C>.08 NO SOIL CLAY WELL DRAINED SAND AYS ENGINEERING GROUP, Inc Client job no location Date Created by PRE- & POST-CONSTRUCTION RUNOFF ANALYSIS PRE-CONSTRUCTION Area 112,364 SF 2.58 ACRES TOTAL AREA OF ENTIRE PROPERTY. C FACTOR ADDITIVE METHOD=

More information

Worksheets from Orange County Technical Guidance Document ( )

Worksheets from Orange County Technical Guidance Document ( ) Worksheets from Orange County Technical Guidance Document (5-19-2011) : Table 2.7: Infiltration BMP Feasibility Worksheet 1 Provide basis: Infeasibility Criteria Yes No Would Infiltration BMPs pose significant

More information

Appendix H Amanda Estates Drainage Study

Appendix H Amanda Estates Drainage Study Appendix H Amanda Estates Drainage Study Hunsaker & Associates 2015 Contents 1 Scope... 1 2 Existing Conditions... 1 3 Project Description... 3 4 Methodology... 5 4.1 Hydrology... 5 4.2 Hydraulics...

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT DANIEL ASH POND B MISSISSIPPI POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT DANIEL ASH POND B MISSISSIPPI POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART 257.82 PLANT DANIEL ASH POND B MISSISSIPPI POWER COMPANY EPA s Disposal of Coal Combustion Residuals from Electric Utilities Final Rule (40 C.F.R.

More information

Appendix G Preliminary Hydrology Study

Appendix G Preliminary Hydrology Study Appendix G Preliminary Hydrology Study Preliminary Hydrology Study VESTING TTM 72608 Long Beach, CA Prepared for: The Long Beach Project, LLC 888 San Clemente, Suite 100 New Port Beach, CA May 28, 2014

More information

APPENDIX J-3. Orcem Stormwater Management and Treatment Facilities Design Summary

APPENDIX J-3. Orcem Stormwater Management and Treatment Facilities Design Summary APPENDIX J-3 Orcem Stormwater Management and Treatment Facilities Design Summary Stormwater Management & Treatment Facilities Design Summary INTRODUCTION KPFF Consulting Engineers has compiled this report

More information

City Plaza Residential (TPM ) Preliminary Hydrology Report

City Plaza Residential (TPM ) Preliminary Hydrology Report Hydrology Study City Plaza Residential (TPM 2016-127) Preliminary Hydrology Report Orange, Orange County, California Prepared For: Greenlaw Partners 18301 Von Karman Avenue, Suite 250 Irvine, CA 92612

More information

RE: Final Drainage Letter: Northwest Aurora Alley Improvements 2016

RE: Final Drainage Letter: Northwest Aurora Alley Improvements 2016 April 12, 2016 Mr. Craig Perl, P.E. Senior Engineer City of Aurora Public Works Department 15151 E. Alameda Parkway Aurora, CO 80012 RE: Final Drainage Letter: Northwest Aurora Alley Improvements 2016

More information

Introduction to Storm Sewer Design

Introduction to Storm Sewer Design A SunCam online continuing education course Introduction to Storm Sewer Design by David F. Carter Introduction Storm sewer systems are vital in collection and conveyance of stormwater from the upstream

More information

Subject: Mt. San Antonio College- Measure RR Updated Hydrology Study

Subject: Mt. San Antonio College- Measure RR Updated Hydrology Study To: Cc: Mike Klein Mt. San Antonio College Sidney Lindmark, AICP Mt SAC Environmental Consultant From: Alysen Weiland, PE - Psomas Date: May 6, 2016 Subject: Mt. San Antonio College- Measure RR Updated

More information

Istokpoga Marsh Watershed Improvement District (IMWID) Minor Impoundment Project. May 23, 2012

Istokpoga Marsh Watershed Improvement District (IMWID) Minor Impoundment Project. May 23, 2012 STORMWATER INFORMATION AND CALCULATIONS FOR ENVIRONMENTAL RESOURCE PERMIT Istokpoga Marsh Watershed Improvement District (IMWID) Minor Impoundment Project Prepared by Chastain-Skillman, Inc. Prepared for

More information

Inflow Design Flood Control System Plan

Inflow Design Flood Control System Plan Inflow Design Flood Control System Plan For Compliance with the Coal Combustion Residuals Rule (40 CFR Part 257) Cherokee Station - CCR Surface Impoundments Public Service Company of Colorado Denver, Colorado

More information

January 20, Nate Hatleback Project Manager, City of Thornton Development Engineering 9500 Civic Center Drive Thornton, CO (303)

January 20, Nate Hatleback Project Manager, City of Thornton Development Engineering 9500 Civic Center Drive Thornton, CO (303) January 20, 2017 Nate Hatleback Project Manager, City of Thornton Development Engineering 9500 Civic Center Drive Thornton, CO 80229 (303) 538-7694 RE: Riverdale Five Retail Drainage Conformance Letter

More information

Run-on and Run-off Control System Plan

Run-on and Run-off Control System Plan Run-on and Run-off Control System Plan CCR Temporary Storage Pad Lewis and Clark Station Prepared for Montana-Dakota Utilities Co. October 2016 Paul T. Swenson 2016.10.13 18:30:03-05'00' 234 West Century

More information

UPDATED SITE DESIGN NARRATIVE AND CALCULATIONS

UPDATED SITE DESIGN NARRATIVE AND CALCULATIONS UPDATED SITE DESIGN NARRATIVE AND CALCULATIONS Burlington Summit The Gutierrez Company One Wall Street, Burlington, MA July, Prepared by, Symmes Maini & McKee Associates Cambridge, MA SMMA No. PROJECT

More information

FROM ROOFTOP TO DRAIN NON-TRADITIONAL APPLICATIONS OF HEC-RAS 2D FROM ROOFTOP. Calibration: A Hands-On Approach to Making a Model Reflect Reality

FROM ROOFTOP TO DRAIN NON-TRADITIONAL APPLICATIONS OF HEC-RAS 2D FROM ROOFTOP. Calibration: A Hands-On Approach to Making a Model Reflect Reality FROM ROOFTOP TO DRAIN NON-TRADITIONAL APPLICATIONS OF HEC-RAS 2D Andrew C. Yung, PE, CFM Andres A. Salazar, PhD, PE April 26, 2017 1 FROM ROOFTOP 2 Amphitheater: 97,000 SF flexible engineered fabric roof

More information

5/11/2007. WinTR-55 for Plan Reviews Small Watershed Hydrology Overview

5/11/2007. WinTR-55 for Plan Reviews Small Watershed Hydrology Overview WinTR-55 for Plan Reviews Small Watershed Hydrology Overview 1 Overview Course Outline Historical Background Program Description Model Capabilities and Limitations This is the Overview portion of the training.

More information

TECHNICAL MEMORANDUM. SUBJECT: Determination of watershed historic peak flow rates as the basis for detention basin design

TECHNICAL MEMORANDUM. SUBJECT: Determination of watershed historic peak flow rates as the basis for detention basin design TECHNICAL MEMORANDUM FROM: Ken MacKenzie and Ryan Taylor SUBJECT: Determination of watershed historic peak flow rates as the basis for detention basin design DATE: June 7, 2012 The purpose of this memorandum

More information

Stormwater Treatment Measure Sizing and Design Considerations SMCWPPP C.3 Workshop June 21, 2017

Stormwater Treatment Measure Sizing and Design Considerations SMCWPPP C.3 Workshop June 21, 2017 Stormwater Treatment Measure Sizing and Design Considerations SMCWPPP C.3 Workshop June 21, 2017 Jill Bicknell, P.E., EOA, Inc. Presentation Overview Sizing/Design of Self Treating and Self Retaining Areas

More information

CVEN 339 Summer 2009 Final Exam. 120 minutes allowed. 36 Students. No curve applied to grades. Median 70.6 Mean 68.7 Std. Dev High 88 Low 24.

CVEN 339 Summer 2009 Final Exam. 120 minutes allowed. 36 Students. No curve applied to grades. Median 70.6 Mean 68.7 Std. Dev High 88 Low 24. CVEN 339 Final Exam 120 minutes allowed 36 Students No curve applied to grades Median 70.6 Mean 68.7 Std. Dev. 13.7 High 88 Low 24.5 Name: CVEN 339 Water Resources Engineering Summer Semester 2009 Dr.

More information

Engineering Hydrology Class 3

Engineering Hydrology Class 3 Engineering Hydrology Class 3 Topics and Goals: I.Develop s (estimate precipitation) II.Develop simple constant intensity design storm III.Develop SCS design storm Ocean s Why do we want to derive the?

More information

Hey and Associates, Inc.

Hey and Associates, Inc. Hey and Associates, Inc. Table 1: 100-Year Study Existing Conditions Discharges and Elevations vs. FIS Results Location Existing FIS Q (cfs) Existing FIS Elevation Existing XP- SWMM Q (cfs) Existing XP-SWMM

More information

MODULE 1 RUNOFF HYDROGRAPHS WORKSHEET 1. Precipitation

MODULE 1 RUNOFF HYDROGRAPHS WORKSHEET 1. Precipitation Watershed MODULE 1 RUNOFF HYDROGRAPHS WORKSHEET 1 A watershed is an area of land thaaptures rainfall and other precipitation and funnels it to a lake or stream or wetland. The area within the watershed

More information

Hydrology Study. Ascension Heights Subdivision Ascension Drive at Bel Aire Road San Mateo, California (Unincorporated)

Hydrology Study. Ascension Heights Subdivision Ascension Drive at Bel Aire Road San Mateo, California (Unincorporated) Hydrology Study Ascension Heights Subdivision Ascension Drive at Bel Aire Road San Mateo, California (Unincorporated) Prepared for San Mateo Real Estate & Construction March 9, 21 Rev. 1 11-8-211 Rev.

More information

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT YATES ASH POND B (AP-B ) GEORGIA POWER COMPANY

INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART PLANT YATES ASH POND B (AP-B ) GEORGIA POWER COMPANY INFLOW DESIGN FLOOD CONTROL SYSTEM PLAN 40 C.F.R. PART 257.82 PLANT YATES ASH POND B (AP-B ) GEORGIA POWER COMPANY EPA s Disposal of Coal Combustion Residuals from Electric Utilities Final Rule (40 C.F.R.

More information

Appendix L. Drainage Report

Appendix L. Drainage Report Appendix L Drainage Report 2nd Street and Pacific Coast Highway Retail Project City of Long Beach County of Los Angeles, CA DRAINAGE REPORT April 5, 2017 DRAINAGE REPORT For: 2nd Street and Pacific Coast

More information

DRAINAGE PLAN AND REPORT OLD DENVER ROAD

DRAINAGE PLAN AND REPORT OLD DENVER ROAD DRAINAGE PLAN AND REPORT 16140 OLD DENVER ROAD PART OF THE NW1/4 SEC. 28, T.11S., R.67W., 6 th P.M. EL PASO COUNTY February 3, 2017 Revised January 5, 2018 Prepared for All About Outdoor Storage Oliver

More information

Design Handbook. Low Impact Development Best Management Practices

Design Handbook. Low Impact Development Best Management Practices Design Handbook for Low Impact Development Best Management Practices Prepared by: 9/2011 Riverside County Flood Control and Water Conservation District 1995 Market Street Riverside, CA 92501 TABLE OF CONTENTS

More information

FROZEN MEET AND GREET AT EPCOT NORWAY PAVILION STORMWATER CALCULATIONS FOR

FROZEN MEET AND GREET AT EPCOT NORWAY PAVILION STORMWATER CALCULATIONS FOR FROZEN MEET AND GREET AT EPCOT NORWAY PAVILION STORMWATER CALCULATIONS FOR SOUTH FLORIDA WATER MANAGEMENT DISTRICT AND REEDY CREEK IMPROVEMENT DISTRICT Prepared by: Heery International, Inc. 4700 Millenia

More information

Introduction to Hydrology, Part 2. Notes, Handouts

Introduction to Hydrology, Part 2. Notes, Handouts Introduction to Hydrology, Part 2 Notes, Handouts Precipitation Much of hydrology deals with precipitation How much? How frequently/infrequently? What form? How quickly? Seasonal variation? Drought frequency?

More information

Green Infrastructure Flood Reduction Computations

Green Infrastructure Flood Reduction Computations Green Infrastructure Flood Reduction Computations Stephen Sands, PE, CFM ssands@hazenandsawyer.com March 24, 2016 Water JAM 2010 Discussion Topics Siting success Watershed-wide computations Individual

More information

WinSLAMM v Program Modifications Final, 3/16/19

WinSLAMM v Program Modifications Final, 3/16/19 WinSLAMM v 10.4.1 Program Modifications Final, 3/16/19 1. Printing Set up a printing option for.pdf files for input data and output summary data. 2. Added the Pipe input data to the printing input data

More information

EXTENDED DETENTION BASIN EXAMPLE

EXTENDED DETENTION BASIN EXAMPLE EXTENDED DETENTION BASIN EXAMPLE 1117 6 July 2015 REFERENCE SECTION 1117 Given: TotalTributaryArea=7.5 o TributaryAreawithinExistingR/W=7.2 o TributaryArea,Impervious,OutsideofR/W=0.3 o TributaryArea,Pervious,OutsideofR/W=0.0

More information

OHM Groups. FUNCTIONAL SERVICING REPORT 33 Arkell Road City of Guelph August 5, Prepared By:

OHM Groups. FUNCTIONAL SERVICING REPORT 33 Arkell Road City of Guelph August 5, Prepared By: Prepared By: OHM Groups FUNCTIONAL SERVICING REPORT 33 Arkell Road City of Guelph 114169 August 5, 2015 Guelph Owen Sound Listowel Kitchener Exeter Hamilton GTA 650 Woodlawn Rd. W., Block C, Unit 2, Guelph

More information

Inflow Design Flood Control System Plan

Inflow Design Flood Control System Plan Inflow Design Flood Control System Plan For Compliance with the Coal Combustion Residuals Rule (40 CFR Part 257) Valmont Station - CCR Surface Impoundments Public Service Company of Colorado Denver, Colorado

More information

City of Fort Collins. Spring Creek Place (2105 South College Avenue) Preliminary Drainage Report

City of Fort Collins. Spring Creek Place (2105 South College Avenue) Preliminary Drainage Report City of Fort Collins Spring Creek Place (2105 South College Avenue) Preliminary Drainage Report OCTOBER 2016 VERSION 3 Prepared By: 4582 South Ulster Street, Suite 1500 Denver, CO 80237 Daniel L. Skeehan,

More information

HYDROLOGIC MODELING CONSISTENCY AND SENSITIVITY TO WATERSHED SIZE

HYDROLOGIC MODELING CONSISTENCY AND SENSITIVITY TO WATERSHED SIZE HYDROLOGIC MODELING CONSISTENCY AND SENSITIVITY TO WATERSHED SIZE by James C.Y. Guo. Professor, Civil Engineering, U. Of Colorado at Denver, James.Guo@cudenver.edu.. And Eric Hsu, Project Engineer, Parson

More information

Learning objectives. Upon successful completion of this lecture, the participants will be able to describe:

Learning objectives. Upon successful completion of this lecture, the participants will be able to describe: Solomon Seyoum Learning objectives Upon successful completion of this lecture, the participants will be able to describe: The different approaches for estimating peak runoff for urban drainage network

More information

Rational Method Hydrological Calculations with Excel COURSE CONTENT

Rational Method Hydrological Calculations with Excel COURSE CONTENT Rational Method Hydrological Calculations with Excel Harlan H. Bengtson, PhD, P.E. COURSE CONTENT 1. Introduction Calculation of peak storm water runoff rate from a drainage area is often done with the

More information

Astra Engineering LLC

Astra Engineering LLC Astra Engineering LLC!"#$#% &'( ) *) ) *)* +## ) ',#$$+-."$% "#"-",-/$+ 0 ) )1'(0 23** ) 243 5*6 78947)3 9**!:;24?)3* 973''!"$#%=4? *9> %-2/- 2+ @:* 3*$/A 2 32 @3*49 13* 32 3-3*-* 2!!2 3*!*!2

More information

DRAINAGE STUDY CROWS LANDING INDUSTRIAL BUSINESS PARK. Stanislaus County. Prepared by:

DRAINAGE STUDY CROWS LANDING INDUSTRIAL BUSINESS PARK. Stanislaus County. Prepared by: DRAINAGE STUDY FOR CROWS LANDING INDUSTRIAL BUSINESS PARK Stanislaus County Prepared by: March, 2017 Revised November, 2017 Table of Contents EXECUTIVE SUMMARY... 1 1. INTRODUCTION... 2 2. HYDROLOGY...

More information

Technical Memorandum

Technical Memorandum Tucson Office 3031 West Ina Road Tucson, AZ 85741 Tel 520.297.7723 Fax 520.297.7724 www.tetratech.com Technical Memorandum To: Kathy Arnold From: Greg Hemmen, P.E. Company: Rosemont Copper Company Date:

More information

East Area One Drainage Technical Report

East Area One Drainage Technical Report East Area One Drainage Technical Report Santa Paula, CA Prepared for: LIMONEIRA COMPANY AND PARKSTONE COMPANIES October 2007 Prepared by: 430 Exchange, Ste 200 Irvine, CA 92602-1309 (714) 734-5100 EAST

More information

HYDROLOGIC-HYDRAULIC STUDY BAYAMON SOUTH COMMERCIAL CENTER BAYAMON, PUERTO RICO. Casiano Ancalle, P.E. August, 2006 I.

HYDROLOGIC-HYDRAULIC STUDY BAYAMON SOUTH COMMERCIAL CENTER BAYAMON, PUERTO RICO. Casiano Ancalle, P.E. August, 2006 I. HYDROLOGIC-HYDRAULIC STUDY BAYAMON SOUTH COMMERCIAL CENTER BAYAMON, PUERTO RICO Casiano Ancalle, P.E. August, 2006 I. INTRODUCTION A commercial development project named Bayamon South Commercial Center

More information

Sump Pumps Office procedures for the Drainage & Grading section

Sump Pumps Office procedures for the Drainage & Grading section County of Los Angeles Department of Public Works Building and Safety Division Grading and Drainage Section Sump Pumps Office procedures for the Drainage & Grading section Introduction This manual provides

More information

Storm Sewer Design. Bob Pitt University of Alabama and Shirley Clark Penn State Harrisburg

Storm Sewer Design. Bob Pitt University of Alabama and Shirley Clark Penn State Harrisburg Storm Sewer Design Bob Pitt University of Alabama and Shirley Clark Penn State Harrisburg Major floods are dramatic and water flow routes must be recognized when minor drainage systems fail. These types

More information

City of Oakland. Public Works Agency Standards STORM DRAINAGE DESIGN GUIDELINES. Engineering Design & ROW Management Division

City of Oakland. Public Works Agency Standards STORM DRAINAGE DESIGN GUIDELINES. Engineering Design & ROW Management Division City of Oakland PUBLIC WORKS AGENCY 250 FRANK H. OGAWA PLAZA 4 TH FLOOR OAKLAND, CALIFORNIA 94612 (510) 238-3437 FAX (510) 238-7227 TTD (510) 238-3254 Public Works Agency Standards STORM DRAINAGE DESIGN

More information

State Standard. for. Stormwater Detention/Retention

State Standard. for. Stormwater Detention/Retention ARIZONA DEPARTMENT OF WATER RESOURCES FLOOD MITIGATION SECTION State Standard for Stormwater Detention/Retention Under the authority outlined in ARS 48-3605(a) the Director of the Arizona Department of

More information

CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT HYDROLOGIC CRITERIA AND DRAINAGE DESIGN MANUAL

CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT HYDROLOGIC CRITERIA AND DRAINAGE DESIGN MANUAL CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT HYDROLOGIC CRITERIA AND DRAINAGE DESIGN MANUAL SECTION 600 STORM RUNOFF TABLE OF CONTENTS 601 INTRODUCTION 603 601.1 - Basin Characteristics 603 602 TIME OF

More information

Hydrologic Calibration:

Hydrologic Calibration: Hydrologic Calibration: UPDATE OF EFFECTIVE HYDROLOGY FOR MARYS CREEK October 2010 Agenda Background Hydrologic model Calibrated rainfall Hydrologic calibration 100 year discharges, Existing Conditions

More information