Lake Mohawksin vs Spirit River Flowage Lake
Water quality, depth, fish species, and recreation comparison.
Lake Mohawksin reads lower on nutrients and algae than Spirit River Flowage Lake. Both are in Lincoln County, Wisconsin.
Both Lake Mohawksin and Spirit River 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. These two sit close on the readings, Lake Mohawksin versus Spirit River Flowage Lake. The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
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.
Lake Mohawksin
Murky, only visible to about 4 ft.
Spirit River Flowage Lake
Very murky, less than 3 ft of visibility.
Side-by-Side Metrics
| Metric | Lake Mohawksin | Spirit River Flowage Lake |
|---|---|---|
| Water Clarity | 4 ft Better | 3 ft |
| Phosphorus | 34.7 µg/L Better | 49.1 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 25 ft | 25 ft |
| Surface Area | 1,515 acres | 1,220 acres |
| Public Access | Yes | Yes |
| Fish Species | 6 | 6 |
| Trophic State | eutrophic | eutrophic |
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.
Swap a lake
Compare Lake Mohawksin or Spirit River Flowage Lake against a different lake.
Verdict
Lake Mohawksin reads lower on nutrients and algae than Spirit River Flowage Lake. Water clarity: 4 ft vs 3 ft. For fishing diversity, Lake Mohawksin also leads with 6 species.
Source: EPA National Aquatic Resource Surveys, 2026.