Citizen Lake-Monitoring Program (CLMP+): Advanced Volunteer Lake Monitoring in Wadena and Hubbard Counties
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Citizen Lake-Monitoring Program (CLMP+): Advanced Volunteer Lake Monitoring in Wadena and Hubbard Counties r e iv R ll e h S UPPER TWIN LAKE ¤£71 HUBBARD DUCK LAKE WADENA LOWER TWIN LAKE er Shell Riv BLUEBERRY LAKE MORGAN LAKE B lu eb e rry River STOCKING LAKE MN-87 SPIRIT LAKE JIM COOK LAKE Menahga January 2006 Citizen Lake-Monitoring Program (CLMP+): Advanced Volunteer Lake Monitoring in Wadena and Hubbard Counties Blueberry Lake (80-0034) Duck Lake (29-0142) Jim-Cook Lake (80-0027) Morgan Lake (80-0038) Upper Twin Lake (29-0157) Lower Twin Lake (80-0030) Spirit Lake (80-0039) Stocking Lake (80-0037) Environmental Analysis and Outcomes Division Water Assessment and Environmental Information Section Pam Anderson Jennifer L.K. Klang January 2006 Printed on recycled paper containing at least 10 percent fibers from paper recycled by consumers. This material may be made available in other formats, including Braille, large format and audiotape. TABLE OF CONTENTS Page List of Tables ....................................................................................................................................................1 List of Figures....................................................................................................................................................2 Part 1. Program History & Background Information on Minnesota Lakes .....................................................4 Part 2. 2005 Lake Surveys................................................................................................................................7 Methods ........................................................................................................................................................7 Data Analysis................................................................................................................................................8 ★ Blueberry Lake....................................................................................................................................13 ★ Duck Lake ...........................................................................................................................................17 ★ Jim-Cook Lake ....................................................................................................................................20 ★ Morgan Lake .......................................................................................................................................21 ★ Upper Twin Lake ................................................................................................................................25 ★ Lower Twin Lake................................................................................................................................29 ★ Spirit Lake...........................................................................................................................................33 ★ Stocking Lake......................................................................................................................................37 Part 3. Water Quality Trends............................................................................................................................40 Part 4. Water Quality Modeling........................................................................................................................47 Part 5. Goal Setting...........................................................................................................................................51 Part 6. Summary & Recommendations.............................................................................................................52 Appendix ...........................................................................................................................................................55 Glossary.............................................................................................................................................................69 References .........................................................................................................................................................71 LIST OF TABLES Page 1. Summer-Mean Water Quality Parameters for Wadena County CLMP+ Lakes ......................................... 10 2. Lake Morphometry, Watershed Areas & Trophic State Indicators for Wadena County CLMP+ Lakes.... 11 3. MINLEAP Results and Predictions for Wadena County CLMP+ Lakes.................................................... 47 4. MINLEAP Default Values and Values Calibrated for Modeling ............................................................... 48 4. Nutrient and Trophic Status Thresholds for Determination of Use Support for Lakes............................... 52 1 LIST OF FIGURES Page 1. Diagrams of Lake Layers and Mixing ............................................................................................................ 5 2. Minnesota Ecoregions & Counties ................................................................................................................. 6 3. Carlson’s Trophic State Index....................................................................................................................... 12 4. Blueberry Lake Bathymetric Map and Monitoring Locations ...................................................................... 13 5. Blueberry Lake Temperature and Dissolved Oxygen Profile Data for 2005 ................................................ 14 6. Blueberry Lake Total Phosphorus Results for 2005 ..................................................................................... 15 7. Blueberry Lake Chlorophyll-a Results for 2005........................................................................................... 15 8. Blueberry Lake Algal Populations for 2005 ................................................................................................. 16 9. Blueberry Lake Secchi Transparency for 2005............................................................................................. 17 10. Duck Lake Bathymetric Map and Monitoring Locations ............................................................................. 17 11. Duck Lake Temperature Profile Data for 2005............................................................................................. 18 12. Duck Lake Total Phosphorus Results for 2005............................................................................................. 18 13. Duck Lake Chlorophyll-a Results for 2005.................................................................................................. 19 14. Duck Lake Algal Populations for 2005......................................................................................................... 19 15. Duck Lake Secchi Transparency for 2005.................................................................................................... 20 16. Jim-Cook Lake Bathymetric Map and Monitoring Locations ...................................................................... 21 17. Morgan Lake Bathymetric Map and Monitoring Locations ......................................................................... 21 18. Morgan Lake Temperature and Dissolved Oxygen Profile Data for 2005.................................................... 22 19. Morgan Lake Total Phosphorus Results for 2005......................................................................................... 23 20. Morgan Lake Chlorophyll-a Results for 2005 .............................................................................................. 23 21. Morgan Lake Algal Populations for 2005..................................................................................................... 24 22. Morgan Lake Secchi Transparency for 2005................................................................................................ 24 23. Upper Twin Lake Bathymetric Map and Monitoring Locations................................................................... 25 24. Upper Twin Lake Temperature Profile Data for 2005.................................................................................. 26 25. Upper Twin Lake Total Phosphorus Results for 2005.................................................................................. 27 26. Upper Twin Lake Chlorophyll-a Results for 2005 ....................................................................................... 27 27. Upper Twin Lake Algal Populations for 2005.............................................................................................. 28 28. Upper Twin Lake Secchi Transparency for 2005 ......................................................................................... 29 29. Lower Twin Lake Bathymetric Map and Monitoring Locations .................................................................. 30 30. Lower Twin Lake Temperature Profile Data for 2005 ................................................................................. 30 31. Lower Twin Lake Total Phosphorus Results for 2005 ................................................................................. 31 32. Lower Twin Lake Chlorophyll-a Results for 2005....................................................................................... 31 33. Lower Twin Lake Algal Populations for 2005 ............................................................................................. 32 34. Lower Twin Lake Secchi Transparency for 2005........................................................................................