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LakeQuality

Clearwater Lake vs Mccormack Lake

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

Mccormack Lake has a higher water quality grade (A, Excellent) than Clearwater Lake (C, Fair). Both are in Wisconsin.

Clearwater Lake and Mccormack Lake are both in Missouri — 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: Mccormack Lake grades a A while Clearwater 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 — Mccormack 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?

C

Clearwater Lake

Reynolds County, Wisconsin

Very murky, less than 2.3 ft of visibility.

A

Mccormack Lake

Oregon County, Wisconsin

Good clarity, visible to about 11.7 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 LakeMccormack Lake
Overall GradeC (Fair)A (Excellent)
Water Clarity2.3 ft11.7 ft
Phosphorus20.3 µg/L6 µg/L
Chlorophyll-a (Algae)3.9 µg/L3 µg/L
Maximum Depth--
Surface Area1.6K acres10 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophicoligotrophic

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

Verdict

Mccormack Lake wins on overall water quality with a Grade A versus Clearwater Lake's Grade C. Water clarity: 11.7 ft vs 2.3 ft. For fishing diversity, Mccormack Lake also leads with 0 species.