How Clean Is Coon Lake?
Coon 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): 5.7 ft. Phosphorus: 23 µg/L. Chlorophyll-a (algae): 7.9 µg/L. Trophic State Index: 51.
Cleanliness Snapshot
| Metric | Coon Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 5.7 ft | — |
| Phosphorus | 23 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 7.9 µg/L | <10 = clean |
| Trophic State Index | 51 | <50 = clean |
How does Coon Lake compare?
Coon Lake's readings match or beat the Minnesota state average. It ranks #9 of 23 lakes in Anoka County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.
Watch Coon Lake water quality
Get an email when the clarity or algae readings change. Unsubscribe anytime.