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LakeQuality

Blanche Lake vs Eagle Lake

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

Eagle Lake has a higher water quality grade (A, Excellent) than Blanche Lake (A, Excellent). Both are in Otter Tail County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Blanche Lake and Eagle 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: Blanche Lake (A) and Eagle Lake (A) 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.

A

Blanche Lake

Otter Tail County, Minnesota

Good clarity, visible to about 12.5 ft.

A

Eagle Lake

Otter Tail County, Minnesota

Crystal clear, you can see 22.6 ft down.

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.

MetricBlanche LakeEagle Lake
Overall GradeA (Excellent)A (Excellent)
Water Clarity12.5 ft22.6 ft
Phosphorus11 µg/L5 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth64 ft46 ft
Surface Area1.3K acres907.4 acres
Public AccessYesYes
Fish Species410
Trophic Stateoligotrophicoligotrophic

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

Verdict

Eagle Lake wins on overall water quality with a Grade A versus Blanche Lake's Grade A. Water clarity: 22.6 ft vs 12.5 ft. For fishing diversity, Eagle Lake also leads with 10 species.