How Clean Is Maple Lake?
Maple 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): 3.3 ft. Phosphorus: 38.5 µg/L. Chlorophyll-a (algae): 17.8 µg/L. Trophic State Index: 59.
Cleanliness Snapshot
| Metric | Maple Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 3.3 ft | — |
| Phosphorus | 38.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 17.8 µg/L | <10 = clean |
| Trophic State Index | 59 | <50 = clean |
How does Maple Lake compare?
Maple Lake's readings match or beat the Minnesota state average. It ranks #9 of 19 lakes in Polk County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 6 years of records.
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