How Clean Is Saint Croix Flowage Lake?
Saint Croix Flowage Lake is a clean lake by Wisconsin standards. It received a water quality grade of B (Good) based on EPA monitoring data. Water clarity (Secchi depth): 10.5 ft. Phosphorus: 23.8 µg/L. Trophic State Index: 47.
Cleanliness Snapshot
| Metric | Saint Croix Flowage Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | B | B |
| Water Clarity (Secchi) | 10.5 ft | — |
| Phosphorus | 23.8 µg/L | <30 = clean |
| Trophic State Index | 47 | <50 = clean |
How does Saint Croix Flowage Lake compare?
Saint Croix Flowage Lake's grade of B matches or beats the Wisconsin state average of B. It ranks #2 of 15 lakes in Douglas County by water quality score.
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