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Green Weeds, Brown Water

Green Weeds, Brown Water. Nutrient Loading into Michigan’s Inland Lakes and Streams. Melanie Stoughton Water Quality Technician St. Joseph Conservation District. Michigan has…. More than 11,000 lakes and ponds 3,288 miles of Great Lakes Coastline 36,000 miles of rivers and streams

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Green Weeds, Brown Water

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  1. Green Weeds, Brown Water Nutrient Loading into Michigan’s Inland Lakes and Streams Melanie StoughtonWater Quality TechnicianSt. Joseph Conservation District

  2. Michigan has….. • More than 11,000 lakes and ponds • 3,288 miles of Great Lakes Coastline • 36,000 miles of rivers and streams • 12,000 miles of cold- water trout streams Inland lakes and streams are the first indicators of water quality problems in a watershed

  3. Green Weeds

  4. Brown Water

  5. Lake Zones PROFUNDAL ZONE

  6. Lake Trophic Status

  7. Oligotrophic - High Quality High Water Quality Mesotrophic - Medium Quality Eutrophic - Poor Quality Poor 10 20 30 40 50 60 70 80 Nutrient Concentration (Phosphorus ug/l) Water Quality Changes in Lakes

  8. What Causes Nutrient Overload?

  9. What Does This Do To Our Lakes and Streams?

  10. Invasive Species Purple Loosestrife Hydrilla Eurasian Watermilfoil Frogbit

  11. How Can Nutrients Be Reduced?

  12. 10 foot buffer strip if little or no slope Buffer Zones 20 feet for Medium Slope 30 feet for steep banks • NO fertilizer, pesticides or compost piles • Prevent runoff and erosion along streams, lakes and storm drains • Native plants anchor soil

  13. Best Management Practices • Lawn Mowing Tips • Taller is better (3”) • Mulch • Lawn Irrigation • Light and often • No Runoff!

  14. Best Management Practices • Lawn Fertilizer Tips • 5-10 foot buffer strip with no fertilizer and extra high cut • No phosphorus fertilizer • Appropriate Nitrogen

  15. Roots are Stronger than Stone, andStone is Strongerthan Steel

  16. Buffer Zone

  17. Image courtesy of MN Dept. of Ag. Remember, when you're fertilizing the lawn, you MAY NOT just be fertilizing the lawn!

  18. Questions?

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