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Clearwater Lake reads lower on nutrients and algae than Ross Lake. Both are in Crow Wing County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Clearwater Lake and Ross 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 meaningfully apart: Clearwater Lake carries clearly lower phosphorus and chlorophyll-a readings than Ross Lake. A spread that wide reflects real underlying differences, in watershed inputs, depth profiles, or monitoring rigor.

For a recreational visitor, the wider gap in the readings is decisive: Clearwater 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?

Clearwater Lake

Crow Wing County, Minnesota

Good clarity, visible to about 13 ft.

Ross Lake

Crow Wing County, Minnesota

Murky, only visible to about 3.5 ft.

Side-by-Side Metrics

MetricClearwater LakeRoss Lake
Water Clarity13 ft Better3.5 ft
Phosphorus12 µg/L Better30 µg/L
Chlorophyll-a (Algae)3.7 µg/L Better13 µg/L
Maximum Depth54 ft Better30 ft
Surface Area905 acres492 acres
Public AccessYesYes
Fish Species16 Better13
Trophic Statemesotrophiceutrophic

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

Clearwater Lake reads lower on nutrients and algae than Ross Lake. Water clarity: 13 ft vs 3.5 ft. For fishing diversity, Clearwater Lake also leads with 16 species.

Source: EPA National Aquatic Resource Surveys, 2026.