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Wl Network Wdnr Lakes Team Feb4 2010
- 1. The Need for a Statewide Lake Water- Level Monitoring Network Paul F. Juckem, Dale M. Robertson, and William J. Rose Lakes Partnership Team Meetings. Feb. 3-4, 2010 Westin, WI
- 3. Clear Lake, Rock County, November 26, 2008
- 4. Historical Water Levels Shell Lake Anvil Lake Fish Lake
- 5. Historical Water Levels Anvil Lake Are the fluctuations natural or anthropogenic? Shell Lake 3 billion gallon diversion Fish Lake
- 6. Historical Water Levels Anvil Lake Are the fluctuations natural or anthropogenic? Shell Lake How has lake water quality responded to fluctuations? 3 billion gallon diversion What are the best management options Fish Lake (diversion, alum, septic pumping)?
- 7. Statewide Lake Water-Level Monitoring Network: Objectives: • Establish a long-term lake-level monitoring network to evaluate trends/cycles in various regions of the state. Emphasis will be on relatively natural seepage lakes, which are most responsive and can give indications of regional changes in climate and hydrology. • Establish baseline conditions for environmental studies and comparison with short-term results. • Provide information to increase the understanding of different lake hydrologic systems and how they respond to climatic drivers. • Provide a framework and protocols for facilitating lake water level monitoring by citizen volunteers through the Citizen Lake Monitoring Network (CLMN) program.
- 8. Requirements of a proper monitoring station: Coordination and Consistency: • Water levels must be read in a consistent manor throughout the year. • Levels must be run from the gauge to an immovable datum, so levels remain consistent from year to year. • Reference points must be established in case the datum is destroyed. • A history must be maintained of how a new datum relates to a prior datum.
- 9. Challenges to Water Level Monitoring: • Anticipating annual trends….
- 10. Challenges to Water Level Monitoring: • Keeping track of a datum….
- 11. Challenges to Water Level Monitoring: • Keeping track of a datum….
- 12. Challenges to Water Level Monitoring: • Keeping track of a datum….
- 13. Water Level (1 – foot interval) Which Water Level is Correct?
- 14. Anvil Lake Datum History:
- 15. Water Level (1 – foot interval) Which Water Level is Correct?
- 16. Statewide Lake Water-Level Monitoring Network: Next steps: • Choose a core set of lakes: – Historical data – Natural hydrologic drivers – Representative distribution across the state
- 17. Lakes with early water level Long records in the USGS database Amnicon Big McKenzie Yellow Anvil Shell Connors Morgan Bone Pine Rib Wheeler Boot Emily Bear Pickerel Winnebago Long Lake Type Fish Irogami Cedar Seepage Lake Drainage Lake Silver Little De Neveu Green Altered (diversion, augmentation) Devils Fish Pine Beaver Mendota & Ripley Monona Koshkonong North Eagle Turtle Browns
- 18. Lakes with early water level records in the USGS database Long Anvil Morgan Pine Wheeler Boot Emily Bear Pickerel Long Lake Type Fish Irogami Cedar Seepage Lake Silver Little De Neveu Green Pine Beaver North
- 19. Statewide Lake Water-Level Monitoring Network: • Next steps: • Choose a core set of lakes. • Identify local observers. • Establish datums / verify historical datums. • Install and survey water level gauges. • Develop a protocol for data collection, reporting and data archiving Phase Two: • Link these index lakes to Citizen Lake Monitoring lakes
- 20. Water Level Plot
- 22. Questions?
- 23. Detailed Lake Studies Conducted Round E. Eightmile by the U.S Geological Survey Whitefish Lac Courte Mercer Little Rock Oreilles Dead Pike Muskellunge Lac du Flambeau LTER Shell Minocqua Little St.Germain Kirby Balsam Silver Red Clara Lake St. Croix Cedar Cedar Primary Areas of Study Green Nutrient Budgets / Eutrophication Cedar Water Level / Eutrophication Aeration / Eutrophication Devils Pike Pesticides / Trace Metals Fish Hydrology Crystal Fowler Groundwater Graber Whitewater,Rice Wind Delavan Powers Lauderdale Geneva McCook
- 24. Tracking a Datum History: The first lake stage Datum height = 100ft Staff reading = 0.10ft Offset = -5.00ft Official lake stage = 95.10 ft
- 25. Tracking a Datum History: The WL & Staff Gauge Move Datum height = 100ft Staff reading = 0.24ft Offset = -6.00ft Official lake stage = 94.24ft
- 26. Tracking a Datum History: The Original Datum is Lost How to tie the new and historical stages? Need to measure the offset between the old datum and new datum before the original datum is lost.