How Clean Is Grace Lake?
Grace Lake has fair water quality — typical of lakes with moderate nutrient enrichment. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 15 ft. Phosphorus: 21.5 µg/L. Chlorophyll-a (algae): 9.3 µg/L. Trophic State Index: 46.
Cleanliness Snapshot
| Metric | Grace Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 15 ft | — |
| Phosphorus | 21.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 9.3 µg/L | <10 = clean |
| Trophic State Index | 46 | <50 = clean |
How does Grace Lake compare?
Grace Lake's readings match or beat the Minnesota state average. It ranks #63 of 85 lakes in Beltrami County on nutrient and algae readings. Multi-year monitoring data shows water quality is improving based on 6 years of records.
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