How Clean Is Lower Prior Lake?
Lower Prior 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): 10 ft. Phosphorus: 26.9 µg/L. Trophic State Index: 48.
Cleanliness Snapshot
| Metric | Lower Prior Lake | Minnesota avg |
|---|---|---|
| Overall Grade | B | C |
| Water Clarity (Secchi) | 10 ft | — |
| Phosphorus | 26.9 µg/L | <30 = clean |
| Trophic State Index | 48 | <50 = clean |
How does Lower Prior Lake compare?
Lower Prior Lake's grade of B matches or beats the Minnesota state average of C. It ranks #2 of 24 lakes in Scott County by water quality score. Multi-year monitoring data shows water quality is stable based on 6 years of records.