The document summarizes water quality trends in three lakes - Crooked, Ham, and Netta - located within the Coon Creek Watershed District in Minnesota. It finds that while Crooked Lake has seen significant improvements in water quality from 1983 to 2009, Ham and Netta Lakes have shown no clear trends over the long term for parameters like total phosphorus and chlorophyll-a. Declining water levels pose the biggest threat and risk lower levels that could negatively impact fish and water quality. Water levels are expected to continue dropping with potentially more invasive species issues.

1. Lakes

3. TREND ANALYSIS Lake Levels

4. TREND ANALYSIS Water Quality Grade B B+ B+ A A B Netta A B B B B C Ham B B B B B B B Crooked '09 '08 '07 '06 '05 '04 '03 '02 '01

9. Questions? Thank You Coon Creek Watershed District