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LakeQuality

Flandrau State Park

Flandrau State Park is a state park in Brown County. It was established in 1937. 5 graded lakes are within 15 miles of the park, including Clear Lake, Hanska Lake, Domeier Lake.

Flandrau State Park State Park spans an unrecorded acreage acres in Minnesota — a designated recreation destination with the full set of facilities the state park system provides. 5 graded lakes are within easy reach of the park, with an average grade of F. Sleepy Eye Lake (D) is the cleanest of the set.

For visitors planning around water quality, the nearby-lakes list below is the practical tool: a park is only as good as the lake you intend to use it from, and the LakeGrade for that lake gives you the water-clarity, nutrient, and algal-pressure context you need.

Designation
State Park
County
Brown County
Established
1937

Nearby Graded Lakes (within 15 mi)

Lakes closest to Flandrau State Park, weighted by size. Click a lake for its full water quality grade, fish species, and depth.

LakeCountyGradeSurface AreaDistance
Clear LakeBrownF252 acres3.1 mi
Hanska LakeBrownF1,795 acres12.3 mi
Domeier LakeBrownF-4.7 mi
Sleepy Eye LakeBrownD241 acres12.7 mi
Omsrud LakeBrownF-10.9 mi

Other Parks in the Area

Park location and metadata sourced from Wikidata. For trail maps, camping reservations, and current conditions, visit the official MN DNR page. Lake grades are derived from EPA Water Quality Portal data using Metropolitan Council standards.

Where to stay near Flandrau State Park

Compare cabins, hotels, and vacation rentals near Flandrau State Park — find a place to stay close to the park and its nearby lakes.

Top-rated places to stay near Flandrau State Park

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Source: EPA National Aquatic Resource Surveys, 2026.