How Clean Is Middle Cullen Lake?
Middle Cullen Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 13.5 ft. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 2.7 µg/L. Trophic State Index: 41.
Cleanliness Snapshot
| Metric | Middle Cullen Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 13.5 ft | — |
| Phosphorus | 14 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 2.7 µg/L | <10 = clean |
| Trophic State Index | 41 | <50 = clean |
How does Middle Cullen Lake compare?
Middle Cullen Lake's readings match or beat the Minnesota state average. It ranks #55 of 85 lakes in Crow Wing County on nutrient and algae readings. Multi-year monitoring data shows water quality is stable based on 6 years of records.
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