Rib Mountain State Park
Rib Mountain State Park is a state park in Marathon County. It was established in 1927. 2 graded lakes are within 15 miles of the park, including Big Eau Pleine Southeast Point Lake, Big Eau Pleine Lake.
Rib Mountain State Park is a Wisconsin State Park covering an unrecorded acreage acres. State parks are the most heavily-developed of the public-land designations — campground, picnic, boat-launch, interpretive-center. The park is not lake-dense — 2 lakes nearby in our dataset — but Big Eau Pleine Southeast Point Lake (F) is the standout among them.
State parks pair well with the LakeGrade dataset: the park itself usually has interpretive signage explaining the local lake system, but the per-lake grade tells you which actual lake in the system to head to.
Official Resources
Nearby Graded Lakes (within 15 mi)
Lakes closest to Rib Mountain State Park, weighted by size. Click a lake for its full water quality grade, fish species, and depth.
| Lake | County | Grade | Surface Area | Distance |
|---|---|---|---|---|
| Big Eau Pleine Southeast Point Lake | Marathon | F | - | 14.1 mi |
| Big Eau Pleine Lake | Marathon | F | - | 14.4 mi |
Other Parks in the Area
- Council Grounds State Park— State Park, 18.6 mi
- Hartman Creek State Park— State Park, 47.2 mi
Source: EPA National Aquatic Resource Surveys, 2026.