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, Domeier Lake, Sleepy Eye 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.
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.
| Lake | County | Grade | Surface Area | Distance |
|---|---|---|---|---|
| Clear Lake | Brown | F | - | 3.1 mi |
| Domeier Lake | Brown | F | - | 4.7 mi |
| Sleepy Eye Lake | Brown | D | 227 acres | 12.7 mi |
| Omsrud Lake | Brown | F | - | 10.9 mi |
| Hanska Lake | Brown | F | - | 12.3 mi |
Other Parks in the Area
- Fort Ridgely State Park— State Park, 16.8 mi
- Minneopa State Park— State Park, 20.3 mi
- Minnesota Valley State Recreation Area— State Recreation Area, 45.9 mi
- Sakatah Lake State Park— State Park, 46.7 mi
Source: EPA National Aquatic Resource Surveys, 2026.