How Clean Is Gile Flowage Lake?
Gile Flowage Lake has fair water quality — typical of lakes with moderate nutrient enrichment. It received a water quality grade of C (Fair) based on EPA monitoring data. Water clarity (Secchi depth): 4.5 ft. Phosphorus: 30.6 µg/L. Trophic State Index: 54.
Cleanliness Snapshot
| Metric | Gile Flowage Lake | Wisconsin avg |
|---|---|---|
| Overall Grade | C | C |
| Water Clarity (Secchi) | 4.5 ft | — |
| Phosphorus | 30.6 µg/L | <30 = clean |
| Trophic State Index | 54 | <50 = clean |
How does Gile Flowage Lake compare?
Gile Flowage Lake's grade of C matches or beats the Wisconsin state average of C. It ranks #28 of 33 lakes in Iron County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.