How Clean Is Grace Lake?
Grace 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): 2.6 ft. Phosphorus: 88 µg/L. Trophic State Index: 66.
Cleanliness Snapshot
| Metric | Grace Lake | Minnesota avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 2.6 ft | — |
| Phosphorus | 88 µg/L | <30 = clean |
| Trophic State Index | 66 | <50 = clean |
How does Grace Lake compare?
Grace Lake's grade of D falls below the Minnesota state average of C. It ranks #23 of 40 lakes in Carver County by water quality score. Multi-year monitoring data shows water quality is declining based on 5 years of records.