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LakeQuality

Clark Lake vs Horse Lake

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

Clark Lake and Horse Lake both received the same overall water quality grade of C (Fair). Both are in Lake County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Clark Lake and Horse Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. The grades are close: Clark Lake (C) and Horse Lake (C) 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.

C

Clark Lake

Lake County, Minnesota

Moderate clarity, visible to about 6.8 ft.

C

Horse Lake

Lake County, Minnesota

Moderate clarity, visible to about 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.

MetricClark LakeHorse Lake
Overall GradeC (Fair)C (Fair)
Water Clarity6.8 ft7 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)No dataNo data
Maximum Depth25 ft25 ft
Surface Area1.2K acres714.89 acres
Public AccessNoNo
Fish Species00
Trophic Statemesotrophicmesotrophic

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

Verdict

Both lakes earn the same Grade C. The tiebreakers come down to clarity (Clark Lake: 6.8 ft, Horse Lake: 7 ft) and what you want from the lake. Clark Lake matches its peer on species count.