The 45-foot waterfall is formed by a dam originally constructed for hydroelectric power in the early 20th century.
The park is situated on a limestone gorge that reveals distinct sedimentary rock layers formed millions of years ago.
The Willow River is a designated Class II trout stream, making it a popular destination for anglers.
The park's terrain includes remnant tallgrass prairies that are maintained through controlled burns to support biodiversity.
Little Falls Lake, located within the park boundaries, was created by the same damming process that shaped the waterfall.
The area serves as a stopover for migratory waterfowl and provides habitat for wild turkeys and white-tailed deer.
Willow River State Park is a 3,000-acre wilderness area centered around the Willow River and its prominent 45-foot waterfall. The park features a diverse landscape of prairie, oak savanna, and hardwood forest. The primary feature is a series of cascades formed by the Willow River as it carves through a limestone gorge before emptying into Lake Mallalieu. The park offers 13 miles of hiking trails ranging from flat, accessible paths to steep, rugged terrain. Visitors can utilize a 124-site campground that provides access to electricity and modern shower facilities. The park contains a designated swimming beach on the shore of Little Falls Lake. A nature center serves as an educational hub, providing information on the local geology and regional ecosystem.
The pedestrian bridge overlooking the main cascade provides the clearest vantage point of the waterfall.
Wear sturdy, closed-toe hiking shoes as the path down to the base of the waterfall is steep and can be slippery.
Bring insect repellent during the summer months, especially when exploring the wooded trails or near the water.
Check the park's online trail conditions page before arriving, as high water levels can occasionally lead to trail closures.
Attempting to swim in the Willow River directly below the waterfall, as the current is hazardous and the area is restricted.
The park is open year-round, but specific trails may close during winter for cross-country skiing or due to spring thaw conditions.
Stay on marked trails to protect the fragile gorge ecosystem; keep all pets on a physical leash at all times.
