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

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

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

20. 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

21. Lake Ecology Suspended Sediment

22. NRCS photo

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

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

25. Secchi Disk

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

29. Trends and Variability

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

31. Average values for physiographic region Region Sediment 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

33. Missouri Lakes Row Crop vs Phosphorus

34. Missouri Lakes Forest vs Phosphorus

35. Longview Lake – Seasonal Pattern

38. LAKES OF MISSOURI VOLUNTEER PROGRAM

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

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

41. 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.