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WATERSHEDS Concepts and Curriculum Review

WATERSHEDS Concepts and Curriculum Review. LAKE MONITORING AND ANALYSIS Tony Thorpe and Dan Obrecht Lakes of Missouri Volunteer Program – Univ. of Missouri. Talk Topics. Pollutants and Sources Lake Ecology Trends and Variability Lakes of Missouri Volunteer Program. Pollutants and Sources.

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WATERSHEDS Concepts and Curriculum Review

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  1. WATERSHEDS Concepts and Curriculum Review LAKE MONITORING AND ANALYSIS Tony Thorpe and Dan Obrecht Lakes of Missouri Volunteer Program – Univ. of Missouri

  2. Talk Topics • Pollutants and Sources • Lake Ecology • Trends and Variability • Lakes of Missouri Volunteer Program

  3. Pollutants and Sources

  4. Most Common Pollutants • Nutrients (phosphorus and nitrogen) • Metals (mercury) • Suspended Sediment (soil materials)

  5. Leading Sources • Agriculture • Municipal Point Sources • Urban Runoff

  6. NRCS photo

  7. NRCS photo

  8. NRCS photo

  9. Leading Sources • Agriculture • Municipal Point Sources • Urban Runoff

  10. Photo vault

  11. Leading Sources • Agriculture • Municipal Point Sources • Urban Runoff

  12. NRCS photo

  13. Lake Ecology Nutrients phosphorus and nitrogen

  14. Other sources of nutrients • Fertilizers from yards, golf courses, etc. • Seepage from failing septic systems • Pet waste • Erosion

  15. Impacts of Excessive Algae • Reduced aesthetics • Decreased recreational value • Increased treatment cost • Taste and odor problems • Impacts of dissolved oxygen in lake • Reduced water clarity

  16. Lake Ecology Suspended Sediment

  17. NRCS photo

  18. Other sources of suspended sediments • Erosion from construction sites • Gully and stream erosion • Shoreline erosion

  19. Impacts of suspended sediment • Reduced aesthetics • Fill in lake bottom • Reduce substrate habitat • Increased treatment cost • Reduced water clarity

  20. Secchi Disk

  21. Human activity in watershed Nutrients Sediment Algae Reduced water clarity Decreased water quality

  22. Trends and Variability

  23. Glacial Plains Ozark Border Osage Plains Mississippi Lowlands Ozark Highlands

  24. Average values for physiographic region RegionSediment Phosphorus (mg/L) (ug/L) Glacial Plains 6.8 44 Osage Plains 16.5 73 Ozark Border 4.5 40 Ozark Highlands 2.1 17

  25. Missouri Lakes Row Crop vs Phosphorus

  26. Missouri Lakes Forest vs Phosphorus

  27. Longview Lake – Seasonal Pattern

  28. LAKES OF MISSOURI VOLUNTEER PROGRAM

  29. Program Goals Determine current water quality of Missouri lakes. Monitor for changes over time. Educate the public about water quality and lake ecology.

  30. Parameters Monitored • Secchi Transparency • Phosphorus and Nitrogen • Algal Chlorophyll • Suspended Sediments

  31. How the Program Works • Volunteers are provided with equipment and training • They collect 8 samples between April and September. • Process samples at home. • LMVP staff pick-up frozen samples and analyze at University. • Data are given to MoDNR and used to produce annual report.

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