How Clean Is German Lake?
German Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 3.2 ft. Phosphorus: 84 µg/L. Trophic State Index: 64.
Cleanliness Snapshot
| Metric | German Lake | Minnesota avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 3.2 ft | — |
| Phosphorus | 84 µg/L | <30 = clean |
| Trophic State Index | 64 | <50 = clean |
How does German Lake compare?
German Lake's grade of D falls below the Minnesota state average of C. It ranks #8 of 14 lakes in Le Sueur County by water quality score. Multi-year monitoring data shows water quality is declining based on 3 years of records.