LAKE SURVEY REPORT DRAFT VERSION PRELIMINARY DATA (AS OF 04/24/2018) Fisheries Management. DOW Number: Survey ID Date: 04/23/2018

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1 Fisheries Management DRAFT VERSION PRELIMINARY DATA (AS OF 04/24/2018) Lake Name: Pearl Survey Type: Targeted Survey DOW Number: Survey ID Date: 04/23/2018 Lake Identification Alternate Lake Name: N/A Primary Lake Class ID: 24 DNR Sounding Map Number: C1994 Alternate Lake Class ID: N/A Lake Location Primary County: Stearns Nearest Town: Cold Spring Legal Descriptions Lake Center: Township - 122N Range - 29W Section - 10 PLS Section Lake Center: All Legal Descriptions: Stearns County: Township - 122N Range - 29W Sections - 2, 3, 10, 11 Area Office Area Name: Region Name: Sauk Rapids Central ORG Code: Region Number: F315 3 Lake Access (Information based on Standard Survey dated 08/28/2017) Station ID Ownership Public Use Type Location / Comments AC - 1 DNR Open to Public use Concrete State owned boat ramp and parking area are located on the north side of the lake off of County Road 146. Lake Characteristics Lake Area (planimetered acres): GIS Lake Area (acres): DOW Lake Area (acres): Littoral Area (acres): Area in MN (acres): Maximum Depth (feet): 17.0 Mean Depth (feet): 9.8 GIS Shoreline Length (miles): Maximum Fetch (miles): Fetch Orientation (degrees): USGS Quad Map Number: Q12a USGS Quad 24K GIS Index: 3224 Watershed Characteristics Major Watershed Minor Watershed Name: Sauk River Watershed Number: 16 Watershed size (acres): 666,747 Name: Pearl L Watershed Number: 8 Watershed size (acres): 10,432 Lake Survey Report revision: Data Date: 04/24/2018 at 12:57 pm.

2 DRAFT Surveys and Investigations Re-Survey: 08/22/2011, 08/25/2008, 08/24/1998, 08/24/1987. Population Assessment: 08/25/2014, 08/20/2013, 08/24/1992, 08/24/1981. Special Assessment: 07/10/2014, 08/08/2013, 07/18/2013, 06/05/2013, 09/04/2012, 05/23/2012, 06/14/2011, 08/23/2010, 06/17/2010, 06/07/2010, 05/28/2010, 03/15/2010, 08/24/2009, 06/03/2009, 05/27/2008, 04/20/2008, 09/25/2006, 05/16/2000. Research Survey: 06/03/2014. External Management Survey: 07/06/2009, 07/17/2008. External Research Survey: 06/01/2016, 08/05/2015, 05/26/2015. Standard Survey: 08/28/2017, 08/24/2015. Targeted Survey: 09/26/2017. Water Level History - Readings Station ID Date Level Reading (feet) Reading Type BM /22/2011 High Above Mean Sea Level 08/25/2008 Normal Above Mean Sea Level GA /25/2009 Normal 1.66 Direct Gauge Reading 08/25/2008 Normal 0.46 Direct Gauge Reading Water Level History - Station Summary Station ID Minimum Level Feet Date Maximum Level Feet Date Range (feet) Average Level (feet) Reading Type (and number of readings) BM /25/ /22/ Above Mean Sea Level (2) GA /25/ /25/ Direct Gauge Reading (2) Page 2

3 DRAFT Net Catch Summary by Numbers for SA Fish Spawning Trap Number of Set - Days: 2 First Set - Day Date: 04/23/2018 Last Set - Day Date: 04/24/2018 Target Species: N/A Abbr Species Number Per Set - Quartiles for Lake Class 24* Total Fish Day 25% 50% 75% NOP Northern Pike N/A N/A N/A Total Fish/Set - Day: * Quartiles for Number Per Set - Day Net Catch Summary by Weight for SA Fish Spawning Trap Abbr Species Total Weight (Pounds) Pounds Per Set - Day Mean Quartiles for Lake Class 24* Weight 25% 50% 75% NOP Northern Pike N/A N/A N/A Total Pounds Fish/Set - Day: * Quartiles for Mean Weight Page 3

4 DRAFT Approval Dates And Notices Date Approved By Sauk Rapids Area Fisheries Supervisor: Date Approved By Central Region Fisheries Manager: This DRAFT VERSION of the Lake Survey Report contains preliminary data (as of 04/24/2018), and is therefore subject to change at any time. Minnesota Department of Natural Resources By accepting the data in this report, the user agrees the data will be used for personal benefit and not for profit. Any other uses or publication of the data needs the consent of the Department. The Minnesota Department of Natural Resources assumes no responsibility for actual or consequential damage incurred as a result of any user's reliance on the data. Lake Survey Report revision: RJE. Data Date: 04/24/2018 at 12:57 pm. Page 4

5 REPORT OVERVIEW - FOR OFFICE USE ONLY (This page is not part of the Lake Survey Report and should be discarded ) Lake Name: Pearl DOW Number: Survey Type: Targeted Survey Survey ID Date: 04/23/2018 Survey Status: Proposed The following 25 (of 32) report OFFICE components are not included in this Lake Survey Report: 6. Lake Outlets 7. Additional Outlet Information 8. Water Control Structure (Dam) USE 9. Surrounding Watershed Characteristics, Shoreline Characteristics, and Riparian Landscape Observations² 10. Resorts And Campgrounds 11. Fish Spawning Conditions 12. Erosion And Pollution 13. Fish Diseases And Parasites 1. Current Water Level 2. Benchmark And Gauge Descriptions / Locations 3. Water Level History¹ 4. Lake Inlets 5. Additional Inlet Information 14. Aquatic Vegetation And Shoalwater Substrates 15. Dissolved Oxygen And Temperature Profile Of Lake Water 16. Field Measusrements Of Water Quality 17. Laboratory Analysis Of Water Chemistry 18. Length Frequency Distributions 19. Length At Capture With Last Incremental Length* 20. Back-Calculated Lengths 21. Age Class Frequency Distributions 22. Status Of Fishery And Field Notes 23. Other Species (added to revision 03/24/2009) ONLY 24. Water Quality (Winter Observations) (added to revision 01/21/2010) 25. Survey Attachments (added to revision ) ¹ Water Level History report: This data has not yet been migrated into the Fisheries LSM database. On 01/08/2009, two additional Water Level History report components (Readings and Station Summary) were added. ² Effective 03/25/2014, the Surrounding Watershed Characteristics, Shoreline Characteristics, and Riparian Landscape Observations report component was modified to be included in the Lake Survey report if it did not include any Watershed and Shoreline characteristics and only consisted of Riparian Landscape Observations. * Length At Capture With Last Incremental Length report: The following criteria must be met for a report to be generated: 1. The fish species must have an assigned body scale constant. 2. Fish must have an "official" age assigned. 3. Fish must have a digitized measurement marked for back calculation use. Note: The data source for Length and Age Class Frequency Distribution tables is updated twice daily - once at noon and once overnight. Any changes to the data made after noon on 04/24/2018 may not be reflected in the Distribution tables until 04/25/2018. FOR OFFICE USE ONLY: As of revision , this page is automatically suppressed on signed versions of this report (area supervisor, region manager, research biologist, research supervisor, program staff, or program manager signed). Fisheries Lake ID = 4028, Survey ID = Lake Survey Report revision: Data Date: 04/24/2018 at 12:57 pm.