How Clean Is Crooked Lake?
Crooked Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 12 ft. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 4 µg/L. Trophic State Index: 42.
Cleanliness Snapshot
| Metric | Crooked Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 12 ft | — |
| Phosphorus | 13 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4 µg/L | <10 = clean |
| Trophic State Index | 42 | <50 = clean |
How does Crooked Lake compare?
Crooked Lake's readings match or beat the Minnesota state average. It ranks #17 of 104 lakes in Cass County by water quality score. Multi-year monitoring data shows water quality is declining based on 2 years of records.
Watch Crooked Lake water quality
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