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