How Clean Is Holden City Lake Nr. Dam?
Holden City Lake Nr. Dam has very poor water quality and a high algae bloom risk. It received a water quality grade of F (Very Poor) based on EPA monitoring data. Water clarity (Secchi depth): 2 ft. Phosphorus: 96 µg/L. Chlorophyll-a (algae): 39.2 µg/L. Trophic State Index: 68.
Cleanliness Snapshot
| Metric | Holden City Lake Nr. Dam | Wisconsin avg |
|---|---|---|
| Overall Grade | F | C |
| Water Clarity (Secchi) | 2 ft | — |
| Phosphorus | 96 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 39.2 µg/L | <10 = clean |
| Trophic State Index | 68 | <50 = clean |
How does Holden City Lake Nr. Dam compare?
Holden City Lake Nr. Dam's grade of F falls below the Wisconsin state average of C. It ranks #5 of 5 lakes in Johnson County by water quality score.