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LakeQuality

Clearwater Lake vs Watap Lake

Water quality, depth, fish species, and recreation comparison.

Clearwater Lake has a higher water quality grade (A, Excellent) than Watap Lake (C, Fair). Both are in Cook County, Minnesota.

Clearwater Lake and Watap Lake are both in Minnesota — 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: Clearwater Lake grades a A while Watap 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 — Clearwater 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?

A

Clearwater Lake

Cook County, Minnesota

Crystal clear, you can see 30 ft down.

C

Watap Lake

Cook County, Minnesota

Moderate clarity, visible to about 9 ft.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricClearwater LakeWatap Lake
Overall GradeA (Excellent)C (Fair)
Water Clarity30 ft9 ft
Phosphorus4 µg/LNo data
Chlorophyll-a (Algae)No dataNo data
Maximum Depth65 ft210 ft
Surface Area461.73 acres2.0K acres
Public AccessNoNo
Fish Species01
Trophic Stateoligotrophicmesotrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Clearwater Lake wins on overall water quality with a Grade A versus Watap Lake's Grade C. Water clarity: 30 ft vs 9 ft. For more fish-species variety, Watap Lake edges ahead with 1 documented species.