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GLSM has a problem… Too much phosphorus!

GLSM has a problem… Too much phosphorus!. 2. Grand Lake St. Marys Current Condition. GLSM is very hypereutrophic : Hypereutrophic is defined by having Total Phosphorus (TP) > 100 m g/L Chlorophyll a (Chl) > 50 mg/L GLSM has summer TP that ranges from TP ~ 170 to 200 mg/L

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GLSM has a problem… Too much phosphorus!

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  1. GLSM has a problem… Too much phosphorus! 2

  2. Grand Lake St. Marys Current Condition GLSM is very hypereutrophic : Hypereutrophic is defined by having Total Phosphorus (TP) > 100 mg/L Chlorophyll a (Chl) > 50 mg/L GLSM has summer TP that ranges from TP ~ 170 to 200 mg/L GLSM has Chl that can reach Chl ~ 250 mg/L 3

  3. Sources of Phosphorus to GLSM External P Sources Include: Agricultural Landscape All land-uses including yards Infrastructure – roads/builds/homes Wildlife Streams and Rivers Atmosphere Groundwater Internal P Sources Lake Sediments Lake Biota – fish, algae, plants, waterfowl 4

  4. Ecological Sustainability of GLSM is Dependent Upon External Phosphorus Load Reduction and Continued Management 6

  5. Grand Lake/Wabash Watershed

  6. Grand Lake St. Marys Restoration Commission

  7. Critical Eight Steps to Revive Grand Lake St. Marys*Taken from the Strategic Plan

  8. Implementations 1. Alum application 2. Dredging

  9. Implementations 3. Alternative and Beneficial Uses of Organic Waste ~ Create economic incentives to attract private investment & development 4. Treatment Train Establishment & Monitoring Stations

  10. Implementations 6. Micro Nutrient Modification 5. Rough Fish Removal

  11. Implementations 8. Water Level Management ~ Sediment Collectors and Spillway Tubes 7. Aeration & Circulation

  12. Solutions

  13. Prairie CreekTreatment Plan Project

  14. Southmoor Shores Airy Gator

  15. Over 5,000 floatingwetland plantings will be supplied and managed by volunteers in 2011!

  16. Dredging on Grand Lake St. Marys

  17. Rough Fish Removal Local Carp Derby Arrangements for fish disposal First tournament was held in June

  18. Alum Treatment Project

  19. Public Awareness Campaign

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