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LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Benton County Lake Quality

Minnesota, 4 lakes, measured by Minnesota PCA

Benton County holds 4 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 1 of those lake carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The monitored lakes here are mostly shallow, productive basins where summer algae is common; each lake page shows its own readings beside the EPA condition class.

The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Little Rock Lake.

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DNR Reports (3)

Minnesota DNR LakeFinder resources for lakes in Benton County. browse all reports →

These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).

All Lakes in Benton County

4 lakes · 1 ranked on readings, 3 without enough sampling1 lake ranked on readings · 3 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
1Little Rock LakeBenton1.8 ft156.5 µg/L115 µg/LNo recent samples17 ft✓ Public
Unnamed LakeBenton1.5 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Donovan LakeBentonNo recent samplesNo recent samplesNo recent samplesNo recent samples6.6 ftNot recorded
Mayhew LakeBentonNo recent samplesNo recent samplesNo recent samplesNo recent samples20 ft✓ Public

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Source: the Minnesota Pollution Control Agency and the Minnesota DNR. See data sources.