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Clearwater Lake and Hungry Jack Lake read the same on nutrients and algae. Both are in Cook County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Clearwater Lake and Hungry Jack 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. The readings are close: Clearwater Lake and Hungry Jack 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.

Clearwater Lake

Cook County, Minnesota

Crystal clear, you can see 29 ft down.

Hungry Jack Lake

Cook County, Minnesota

Crystal clear, you can see 18 ft down.

Side-by-Side Metrics

MetricClearwater LakeHungry Jack Lake
Water Clarity29 ft Better18 ft
Phosphorus4 µg/L Better7 µg/L
Chlorophyll-a (Algae)1.3 µg/L Better2 µg/L
Maximum Depth65 ft71 ft Better
Surface Area462 acres474 acres
Public AccessNoYes
Fish Species09 Better
Trophic Stateoligotrophicoligotrophic

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 (Clearwater Lake: 29 ft, Hungry Jack Lake: 18 ft) and what you want from the lake. Clearwater Lake has fewer fish species than Hungry Jack Lake.

Source: EPA National Aquatic Resource Surveys, 2026.