1. Waterbody Classification Project A project of the Lakes and Watershed Commission, Dane County Department of Planning and Development, and the Dane County Regional Planning Commission August 26th 2004

2. Meeting Agenda Background Classification System Next Steps Input and Discussion

3. Background Rising from public comment, the classification project was started to address citizen concerns Tailoring policies to meet the differing needs and circumstances of different types of waterbodies

4. Overall goal: to encourage the management of lakes and streams on the basis of resource specific characteristics Provide scientific basis for developing a mix of policy approaches appropriate for each waterbody Promote a deeper understanding of the current condition of Dane County waters

5. Will not identify certain waterbodies as better than others. Grouping waterbodies in order to identify and target management techniques tailored to their given physical, chemical, and biological conditions.

6. Lakes and Ponds: Sensitivity Measurements Lake Hydrologic Type –Spring, Seepage, Drainage Maximum Depth Surface Area Shoreline Development Factor Stratification Septic Suitability Soil Erodability Others

7. Lakes and Ponds: Shoreland Development Measurements Past methods: dwelling units per shoreline mile or average lot size Impervious Cover –any surface where water cannot infiltrate into the ground –emerging as a key indicator for measuring the impacts of development on aquatic ecosystems.

8. http://www.co.fairfax.va.us/parks/accotink/impervious.htm

9. Impervious Cover Model Our method –300-foot buffer –Determined acres of each land use present within buffer –Assigned each land use a recognized average impervious cover percentage –Calculated the percent of imperviousness within the buffer

10. Streams: Subwatershed Development Measurements

11. Streams: Sensitivity Measurements

12. Stream Classification DNR Fish and Aquatic Life classification

13. Next Steps Phase I: -Public Review and Comment -Final Report Phase II: - Develop a Waterbody Protection Program (funding pending completion of phase I)

14. Input and Discussion