How Clean Is Lower Trelipe Lake?
Lower Trelipe 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): 6.9 ft. Phosphorus: 23 µg/L. Chlorophyll-a (algae): 11.9 µg/L. Trophic State Index: 51.
Cleanliness Snapshot
| Metric | Lower Trelipe Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 6.9 ft | — |
| Phosphorus | 23 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 11.9 µg/L | <10 = clean |
| Trophic State Index | 51 | <50 = clean |
How does Lower Trelipe Lake compare?
Lower Trelipe Lake's readings match or beat the Minnesota state average. It ranks #91 of 104 lakes in Cass 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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