The lake was formed in 1954 following the construction of an earthen dam designed for flood control and recreation.
The park is situated within the Driftless Area, a region of Wisconsin that escaped glaciation during the last ice age, resulting in unique rugged topography.
The reservoir covers approximately 455 acres and reaches depths of up to 14 feet near the dam structure.
The park property includes a dedicated youth camping area designed for large groups and organizations.
The lake is a popular ice fishing destination due to its consistent population of panfish and northern pike.
Yellowstone Lake State Park is a 455-acre reservoir created by a dam on the Yellowstone River in Lafayette County, Wisconsin. The park offers extensive year-round outdoor recreation including fishing, boating, and swimming. Anglers frequently target panfish, largemouth bass, and walleye within the lake waters. The landscape features rolling terrain with over 13 miles of hiking trails that transition into groomed cross-country ski trails during winter. Birdwatchers utilize the diverse habitats for spotting migratory waterfowl and raptors. Camping facilities include 129 sites, with a significant portion offering electrical hookups for visitors. A designated swimming beach is maintained on the north shore of the lake. The park serves as a central hub for the surrounding Driftless Area's topography.
The shoreline overlook near the dam provides a panoramic view of the lake against the surrounding hills.
Bring insect repellent, as the lake-adjacent terrain can have significant mosquito and tick activity in summer.
Check the Wisconsin DNR website for water quality updates and blue-green algae advisories before planning a swim.
Book camping sites well in advance via the state reservation system, as weekend slots fill months ahead.
Assuming all trails are paved; most are natural-surface woodland paths that become muddy after rainfall.
Park trails and outdoor facilities are open year-round, though some campground loops may close during the winter months.
Leashed pets are permitted in most areas but prohibited on the swimming beach; observe quiet hours in campgrounds.
