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Pelican Lake reads lower on nutrients and algae than Prairie Lake. Both are in Otter Tail County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Pelican Lake and Prairie 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 readings are close: Pelican Lake and Prairie Lake sit within a narrow band of each other on phosphorus, chlorophyll-a and clarity. The per-parameter table below shows where the small differences actually live.

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.

Pelican Lake

Otter Tail County, Minnesota

Crystal clear, you can see 16.4 ft down.

Prairie Lake

Otter Tail County, Minnesota

Moderate clarity, visible to about 8.9 ft.

Side-by-Side Metrics

MetricPelican LakePrairie Lake
Water Clarity16.4 ft Better8.9 ft
Phosphorus15 µg/L Better18 µg/L
Chlorophyll-a (Algae)3 µg/L Better7.3 µg/L
Maximum Depth55 ft Better22 ft
Surface Area3,962 acres1,004 acres
Public AccessYesYes
Fish Species20 Better15
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

Pelican Lake reads lower on nutrients and algae than Prairie Lake. Water clarity: 16.4 ft vs 8.9 ft. For fishing diversity, Pelican Lake also leads with 20 species.

Source: EPA National Aquatic Resource Surveys, 2026.