How Clean Is Rush Lake?
Rush Lake is a clean lake by Minnesota standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 6.9 ft. Phosphorus: 27.5 µg/L. Trophic State Index: 51.
Cleanliness Snapshot
| Metric | Rush Lake | Minnesota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 6.9 ft | — |
| Phosphorus | 27.5 µg/L | <30 = clean |
| Trophic State Index | 51 | <50 = clean |
How does Rush Lake compare?
Rush Lake's grade of B matches or beats the Minnesota state average of C. It ranks #72 of 97 lakes in Otter Tail County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.