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LakeQuality

Bad Medicine Lake vs Detroit Lake

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

Bad Medicine Lake has a higher water quality grade (A, Excellent) than Detroit Lake (A, Excellent). Both are in Becker County, Minnesota.

Both Bad Medicine Lake and Detroit 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. These two are within a letter of each other on the rubric — Bad Medicine Lake (A) versus Detroit Lake (A). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

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.

A

Bad Medicine Lake

Becker County, Minnesota

Crystal clear, you can see 25 ft down.

A

Detroit Lake

Becker County, Minnesota

Good clarity, visible to about 14 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.

MetricBad Medicine LakeDetroit Lake
Overall GradeA (Excellent)A (Excellent)
Water Clarity25 ft14 ft
Phosphorus6 µg/L17 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth84 ft89 ft
Surface Area803.03 acres3.1K acres
Public AccessYesYes
Fish Species11
Trophic Stateoligotrophicmesotrophic

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

Verdict

Bad Medicine Lake wins on overall water quality with a Grade A versus Detroit Lake's Grade A. Water clarity: 25 ft vs 14 ft. For fishing diversity, Bad Medicine Lake also leads with 1 species.