How Clean Is German Lake?
German Lake is algae-prone, with a higher bloom risk in warm months. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 3.5 ft. Phosphorus: 74 µg/L. Chlorophyll-a (algae): 61.9 µg/L. Trophic State Index: 65.
Cleanliness Snapshot
| Metric | German Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 3.5 ft | — |
| Phosphorus | 74 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 61.9 µg/L | <10 = clean |
| Trophic State Index | 65 | <50 = clean |
How does German Lake compare?
German Lake's readings run above the Minnesota state average. It ranks #11 of 13 lakes in Le Sueur County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 4 years of records.
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