Chippewa Flowage -North of Cranberry Bars Lake vs Lac Courte Oreilles Lake
Water quality, depth, fish species, and recreation comparison.
Lac Courte Oreilles Lake has a higher water quality grade (A, Excellent) than Chippewa Flowage -North of Cranberry Bars Lake (C, Fair). Both are in Sawyer County, Wisconsin.
Chippewa Flowage -North of Cranberry Bars Lake and Lac Courte Oreilles 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 meaningfully apart: Lac Courte Oreilles Lake grades a A while Chippewa Flowage -North of Cranberry Bars Lake grades a C. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.
For a recreational visitor, the wider grade gap is decisive — Lac Courte Oreilles Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Chippewa Flowage -North of Cranberry Bars Lake
Murky, only visible to about 4.9 ft.
Lac Courte Oreilles Lake
Good clarity, visible to about 12.2 ft.
Side-by-Side Metrics
| Metric | Chippewa Flowage -North of Cranberry Bars Lake | Lac Courte Oreilles Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 4.9 ft | 12.2 ft |
| Phosphorus | 32 µg/L | 15 µg/L |
| Chlorophyll-a (Algae) | 10 µg/L | 1.7 µg/L |
| Maximum Depth | 92 ft | 90 ft |
| Surface Area | 14,593 acres | 5,139 acres |
| Public Access | Yes | Yes |
| Fish Species | 8 | 6 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Lac Courte Oreilles Lake wins on overall water quality with a Grade A versus Chippewa Flowage -North of Cranberry Bars Lake's Grade C. Water clarity: 12.2 ft vs 4.9 ft. For more fish-species variety, Chippewa Flowage -North of Cranberry Bars Lake edges ahead with 8 documented species.
Source: EPA National Aquatic Resource Surveys, 2026.