How Clean Is Froelich Dam Lake?
Froelich Dam 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): 3.9 ft. Chlorophyll-a (algae): 37.5 µg/L. Trophic State Index: 62.
Cleanliness Snapshot
| Metric | Froelich Dam Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | D | C |
| Water Clarity (Secchi) | 3.9 ft | — |
| Chlorophyll-a (Algae) | 37.5 µg/L | <10 = clean |
| Trophic State Index | 62 | <50 = clean |
How does Froelich Dam Lake compare?
Froelich Dam Lake's grade of D falls below the Wisconsin state average of C. It ranks #1 of 1 lakes in Sioux County by water quality score.