How Clean Is Agnes Lake?
Agnes 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): 13.5 ft. Trophic State Index: 40.
Cleanliness Snapshot
| Metric | Agnes Lake | Minnesota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 13.5 ft | — |
| Trophic State Index | 40 | <50 = clean |
How does Agnes Lake compare?
Agnes Lake's grade of B matches or beats the Minnesota state average of C. It ranks #69 of 187 lakes in St. Louis County by water quality score. Multi-year monitoring data shows water quality is declining based on 2 years of records.