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

Reviewed by LakeQuality Editorial Team · Updated

Both North Turtle Lake and Pelican 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. Pelican Lake reads materially cleaner than North Turtle Lake on nutrients and algae. A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.

For a recreational visitor, the wider gap in the readings is decisive: Pelican Lake has the lower nutrient and algae numbers. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

North Turtle Lake

Otter Tail County, Minnesota

Murky, only visible to about 4 ft.

Pelican Lake

Otter Tail County, Minnesota

Crystal clear, you can see 16.4 ft down.

Side-by-Side Metrics

MetricNorth Turtle LakePelican Lake
Water Clarity4 ft16.4 ft Better
Phosphorus54.5 µg/L15 µg/L Better
Chlorophyll-a (Algae)22 µg/L3 µg/L Better
Maximum Depth19 ft55 ft Better
Surface Area1,773 acres3,962 acres
Public AccessYesYes
Fish Species1220 Better
Trophic Stateeutrophicmesotrophic

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 North Turtle Lake. Water clarity: 16.4 ft vs 4 ft. For fishing diversity, Pelican Lake also leads with 20 species.

Source: EPA National Aquatic Resource Surveys, 2026.