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LakeQuality

Fraser Lake vs Strup Lake

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

Fraser Lake has a higher water quality grade (B, Good) than Strup Lake (C, Fair). Both are in Lake County, Minnesota.

Fraser Lake and Strup 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 close: Fraser Lake (B) and Strup 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.

B

Fraser Lake

Lake County, Minnesota

Good clarity, visible to about 11 ft.

C

Strup Lake

Lake County, Minnesota

Moderate clarity, visible to about 9.7 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.

MetricFraser LakeStrup Lake
Overall GradeB (Good)C (Fair)
Water Clarity11 ft9.7 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)No dataNo data
Maximum Depth105 ft195 ft
Surface Area695.05 acres1.7K acres
Public AccessNoNo
Fish Species01
Trophic Statemesotrophicmesotrophic

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

Verdict

Fraser Lake wins on overall water quality with a Grade B versus Strup Lake's Grade C. Water clarity: 11 ft vs 9.7 ft. For more fish-species variety, Strup Lake edges ahead with 1 documented species.