1. Lakes

2. Review Of Current Chapter

2 Lakes: Crooked & Ham (Netta is small)

Lakes are noted to be in acceptable resource condition

Only Eurasian Water Milfoil is cited as problem

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 5. TREND ANALYSIS

Crooked Lake

• Water quality has significantly improved from 1983 to 2009

• Secchi transparency has an improving trend since 1993

• Total Phosphorus and Chlorophyll-a are statistically unchanged

6. TREND ANALYSIS

Ham Lake

• There is no long term trend in TP, Cl-a, and Clarity

Netta

• There is no long term trend in TP, Cl-a

• Clarity appears to be improving over the last 10 years

7. Implications

Declines in water level is the most significant trend and threat to lakes within the watershed

Declines in water level will probably lead to increased concentrations of TP & Cl-a

As water levels drop

• fishing will improve

• mean temperatures could rise and DO levels could fall placing the fishery at risk

8. Expectations

Water levels will continue to drop

Greater occurrence of EWM & CLP

9. Questions? Thank You Coon Creek Watershed District