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Clearwater Lake reads lower on nutrients and algae than Collinwood Lake. Both are in Wright County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Both Clearwater Lake and Collinwood 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 Collinwood 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

Wright County, Minnesota

Moderate clarity, visible to about 9.8 ft.

Collinwood Lake

Wright County, Minnesota

Murky, only visible to about 4 ft.

Side-by-Side Metrics

MetricClearwater LakeCollinwood Lake
Water Clarity9.8 ft Better4 ft
Phosphorus22 µg/L Better135 µg/L
Chlorophyll-a (Algae)6.3 µg/L Better38.6 µg/L
Maximum Depth73 ft Better28 ft
Surface Area3,187 acres639 acres
Public AccessYesYes
Fish Species1718 Better
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 Collinwood Lake. Water clarity: 9.8 ft vs 4 ft. For more fish-species variety, Collinwood Lake edges ahead with 18 documented species.

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Source: EPA National Aquatic Resource Surveys, 2026.