How Clean Is Sarah Lake?
Sarah Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 3 ft. Phosphorus: 78 µg/L. Trophic State Index: 64.
Cleanliness Snapshot
| Metric | Sarah Lake | Minnesota avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 3 ft | — |
| Phosphorus | 78 µg/L | <30 = clean |
| Trophic State Index | 64 | <50 = clean |
How does Sarah Lake compare?
Sarah Lake's grade of D falls below the Minnesota state average of C. It ranks #58 of 95 lakes in Hennepin County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.