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LakeQuality

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.

Reviewed by LakeQuality Editorial Team · Updated

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?

Murky, only visible to about 4.9 ft.

A

Lac Courte Oreilles Lake

Sawyer County, Wisconsin

Good clarity, visible to about 12.2 ft.

Side-by-Side Metrics

MetricChippewa Flowage -North of Cranberry Bars LakeLac Courte Oreilles Lake
Overall GradeC (Fair)A (Excellent)
Water Clarity4.9 ft12.2 ft
Phosphorus32 µg/L15 µg/L
Chlorophyll-a (Algae)10 µg/L1.7 µg/L
Maximum Depth92 ft90 ft
Surface Area14,593 acres5,139 acres
Public AccessYesYes
Fish Species86
Trophic Stateeutrophicmesotrophic

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.