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Clearwater Lake and Round Lake read the same on nutrients and algae. Both are in Crow Wing County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Clearwater Lake and Round 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 Round 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

Crow Wing County, Minnesota

Good clarity, visible to about 13 ft.

Round Lake

Crow Wing County, Minnesota

Good clarity, visible to about 13.5 ft.

Side-by-Side Metrics

MetricClearwater LakeRound Lake
Water Clarity13 ft13.5 ft Better
Phosphorus12 µg/L Better17 µg/L
Chlorophyll-a (Algae)3.7 µg/L2.7 µg/L Better
Maximum Depth54 ft Better51 ft
Surface Area905 acres1,650 acres
Public AccessYesYes
Fish Species1620 Better
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 (Clearwater Lake: 13 ft, Round Lake: 13.5 ft) and what you want from the lake. Clearwater Lake has fewer fish species than Round Lake.

Source: EPA National Aquatic Resource Surveys, 2026.