Gile Flowage Lake vs Turtle Flambeau Flowage Lake
Water quality, depth, fish species, and recreation comparison.
Turtle Flambeau Flowage Lake reads lower on nutrients and algae than Gile Flowage Lake. Both are in Iron County, Wisconsin.
Both Gile Flowage Lake and Turtle Flambeau Flowage Lake sit in Wisconsin. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. The readings are close: Gile Flowage Lake and Turtle Flambeau Flowage Lake sit within a narrow band of each other on phosphorus, chlorophyll-a and clarity. The per-parameter table below shows where the small differences actually live.
With readings this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.
Gile Flowage Lake
Murky, only visible to about 4.6 ft.
Turtle Flambeau Flowage Lake
Murky, only visible to about 6 ft.
Side-by-Side Metrics
| Metric | Gile Flowage Lake | Turtle Flambeau Flowage Lake |
|---|---|---|
| Water Clarity | 4.6 ft | 6 ft Better |
| Phosphorus | 30.2 µg/L | 19.4 µg/L Better |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 3,317 acres | 13,798 acres |
| Public Access | Yes | Yes |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | mesotrophic |
A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.
Verdict
Turtle Flambeau Flowage Lake reads lower on nutrients and algae than Gile Flowage Lake. Water clarity: 6 ft vs 4.6 ft. For fishing diversity, Turtle Flambeau Flowage Lake also leads with 0 species.
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Where to stay near Gile Flowage Lake and Turtle Flambeau Flowage Lake
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Source: EPA National Aquatic Resource Surveys, 2026.