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LakeQuality
Sunset over the pine treeline on Slim Lake, the sun reflected on light chop

Rib Mountain State Park

Rib Mountain State Park is a state park in Marathon County. It was established in 1927. 2 lakes with water-quality readings 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 Lake is the standout among them on the readings.

State parks pair well with the lake pages: the park itself usually has interpretive signage explaining the local lake system, but the per-lake readings tell you which actual lake in the system to head to.

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Designation
State Park
County
Marathon County
Established
1927

Official Resources

Nearby Lakes (within 15 mi)

Lakes closest to Rib Mountain State Park, weighted by size. Click a lake for its water-quality readings, fish species, and depth.

LakeCountySurface AreaDistance
Big Eau Pleine Southeast Point LakeMarathon6,348 acres14.1 mi
Big Eau Pleine LakeMarathon-14.4 mi

Other Parks in the Area

Park location and metadata sourced from Wikidata. For trail maps, camping reservations, and current conditions, visit the official WI DNR page. Lake readings come from the EPA Water Quality Portal and are shown beside the EPA National Lakes Assessment condition class for the lake's ecoregion. Secchi clarity is shown, not classified.

Where to stay near Rib Mountain State Park

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

Top-rated places to stay near Rib Mountain State Park

Prices for Sep 18–20, 4 adults. Change dates on the map below.

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Source: EPA National Aquatic Resource Surveys, 2026.