Snowmobiling is allowed on the frozen surface of the St. Croix River, with some exceptions, on designated snowmobile trails sponsored by the state, county, or clubs and designated river crossings. The National Park Service adopts and enforces all state laws as applicable.
St. Croix River: Snowmobiles can travel on the frozen river surface from Prescott to the Osceola Bridge and from St. Croix Falls to Riverside. Snowmobiling from the Highway 243 bridge at Osceola, Wisconsin north to the Xcel Energy Hydroelectric Dam at St. Croix Falls is prohibited at all times due to unsafe ice. Travel is also prohibited from the Highway 35 bridge at Riverside, north to Gordan Dam.
Namekagon River: Snowmobiles may cross the river at locations along designated trails, but may not travel the length of the river.
Safety and Rules:
The St. Croix and Namekagon rivers do not freeze uniformly, currents, springs, water depth, and water level fluctuations because of the dams, all contribute to ice that can be thick or thin within short distances. Use caution and pay attention for thin ice when travelling on the river.
Snowmobile speed within the park is 45 miles per hour unless otherwise posted.
Racing or otherwise operating a snowmobile in a dangerous or reckless manner is prohibited.
Check that your brakes and lights are working and that your engine noise is not excessive (78 decibels or lower)
Snowmobile events can be held with a special use permit from the Riverway.
Water skipping can be dangerous, can cause damage or loss of your machine and is discouraged.
For information on Minnesota regulations and trail locations:
For information on Wisconsin snowmobiling regulations:
For more information on trails and conditions contact appropriate tourism contacts.