1. SELF-HELP MONITORING — A WISCONSIN LAKE — Mary Jane Bumby Green Lake Green Lake County Wisconsin

2. Graph of Secchi & Temperature Readings

3. 2002 pier thick with aquatic plants! No swimming here!

4. Mats of Oscillatoria sp.

5. Map:East & West Deep-water

6. Monitoring Equipment

7. Collecting Sample of Plankton after 17 Ft. vertical pull.

8. Some Green Lake Plankton Deep-Water

9. 2004 Monitoring Record Sheet and Data Collected June 3

10. G L Subwatershed Acreage

11. 1992 Map of Watershed

12. 1980-2003 Secchi Ave

13. SAME SECCHI “SMOOTHED”

14. EAST & WEST MIN & MAX

15. RAINFALL MAY - OCT (MONITORING DATES)

16. CLOSE TO LAKE SURFACE: SECCHI AT 1/2 M (2 FT) & 1/2 SECCHI READING

17. 2003 WEST DEEP-WATER STATION COLORS

18. East Basin ‘86-03 WiDNR July and August

19. PARAMETERS SAMPLED:  WATER CLARITY  TEMPERATURE  DISSOLVED OXYGEN  TOTAL PHOSPHORUS  CHLOROPHYLL

20. Green Lake’s yearly data from 1980-2003 show:  valid differences in Secchi data recording droughts and rainy times;  “smoothed” readings reveals cyclic lake responses;  from 1980 - 2003 trend shows some improvement in lake clarity and  lake’s east end is more turbid than west and includes about 68% of the 114 sq mi watershed.

21. NONPOINT POLLUTION IS OF MAJOR IMPORTANCE AROUND THIS LAKE  ONLY IN VERY SMALL SITES CAN SEDIMENT THAT ENTERS THIS LAKE EVER BE REMOVED.  ESTIMATED “FLUSHING TIME” OF LAKE IS 17 - 21 YEARS ( 2 STUDIES).

22. SECCHI DATA  ARE NOT J UST COLLECTED EMOTIONALLY AND THEN THEY BECOME SCIENTIFIC AND  SHOW THE HEALTH OF LAKES WHICH GIVES AN INDICATION OF HOW WE DO ON LAND WITHIN THE WATERSHED.