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Movil Lake and Three Island Lake read the same on nutrients and algae. Both are in Beltrami County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Movil Lake and Three Island 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. These two sit close on the readings, Movil Lake versus Three Island 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.

Movil Lake

Beltrami County, Minnesota

Good clarity, visible to about 14 ft.

Three Island Lake

Beltrami County, Minnesota

Good clarity, visible to about 11.8 ft.

Side-by-Side Metrics

MetricMovil LakeThree Island Lake
Water Clarity14 ft Better11.8 ft
Phosphorus12 µg/L Better17 µg/L
Chlorophyll-a (Algae)5.3 µg/L4.1 µg/L Better
Maximum Depth50 ft Better25 ft
Surface Area855 acres729 acres
Public AccessYesYes
Fish Species20 Better17
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 (Movil Lake: 14 ft, Three Island Lake: 11.8 ft) and what you want from the lake. Movil Lake supports more documented fish species.

Source: EPA National Aquatic Resource Surveys, 2026.