Is Fish Trap Lake Safe for Swimming?
Fish Trap Lake in Morrison County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 9.7 ft visibility. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 7 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 9.7 ft |
| Phosphorus | 22 μg/L |
| Chlorophyll-a (Algae) | 7 μg/L |
| Maximum Depth | 42 ft |
| Location | Morrison County, Minnesota |
How does Fish Trap Lake compare?
With an overall water quality grade of A, Fish Trap Lake matches or beats the Minnesota state average of Grade C. It ranks #6 of 8 lakes in Morrison County by water quality score.
Water clarity (Secchi depth) sits at 9.7 feet. That puts the lake in good clarity range, with limited algae interference. Algae levels (chlorophyll-a) measure 7 µg/L — moderate; acceptable for swimming on most days, but worth checking advisories.