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Fish Trap Lake and Shamineau Lake read the same on nutrients and algae. Both are in Morrison County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Fish Trap Lake and Shamineau Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. These two sit close on the readings, Fish Trap Lake versus Shamineau Lake. The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

With readings 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.

Fish Trap Lake

Morrison County, Minnesota

Moderate clarity, visible to about 9.7 ft.

Shamineau Lake

Morrison County, Minnesota

Good clarity, visible to about 12.5 ft.

Side-by-Side Metrics

MetricFish Trap LakeShamineau Lake
Water Clarity9.7 ft12.5 ft Better
Phosphorus22 µg/L14 µg/L Better
Chlorophyll-a (Algae)7 µg/L4 µg/L Better
Maximum Depth42 ft52 ft Better
Surface Area1,164 acres1,434 acres
Public AccessYesYes
Fish Species1818
Trophic Statemesotrophicmesotrophic

A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.

Verdict

Both lakes earn the same Grade A. The tiebreakers come down to clarity (Fish Trap Lake: 9.7 ft, Shamineau Lake: 12.5 ft) and what you want from the lake. Fish Trap Lake matches its peer on species count.

Source: EPA National Aquatic Resource Surveys, 2026.