How Clean Is Lobster Lake?
Lobster 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 ft. Phosphorus: 20 µg/L. Trophic State Index: 44.
Cleanliness Snapshot
| Metric | Lobster Lake | Minnesota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 13 ft | — |
| Phosphorus | 20 µg/L | <30 = clean |
| Trophic State Index | 44 | <50 = clean |
How does Lobster Lake compare?
Lobster Lake's grade of B matches or beats the Minnesota state average of C. It ranks #24 of 51 lakes in Douglas County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.