Saint Croix Flowage Lake vs Whitefish Lake
Water quality, depth, fish species, and recreation comparison.
Whitefish Lake has a higher water quality grade (A, Excellent) than Saint Croix Flowage Lake (B, Good). Both are in Douglas County, Wisconsin.
Saint Croix Flowage Lake and Whitefish Lake are both in Wisconsin — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. The grades are close: Saint Croix Flowage Lake (B) and Whitefish Lake (A) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.
With grades 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.
Saint Croix Flowage Lake
Good clarity, visible to about 10.5 ft.
Whitefish Lake
Crystal clear, you can see 24.5 ft down.
Side-by-Side Metrics
| Metric | Saint Croix Flowage Lake | Whitefish Lake |
|---|---|---|
| Overall Grade | B (Good) | A (Excellent) |
| Water Clarity | 10.5 ft | 24.5 ft |
| Phosphorus | 23.8 µg/L | 11.4 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | 102 ft |
| Surface Area | 1.9K acres | 848 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | mesotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Whitefish Lake wins on overall water quality with a Grade A versus Saint Croix Flowage Lake's Grade B. Water clarity: 24.5 ft vs 10.5 ft. For fishing diversity, Whitefish Lake also leads with 0 species.