We would like to float while we are visiting the park. Where is the nearest river we could float? Thank you

It' very near the Missouri River.

DeBourgmont Access on Hwy 41 south of Arrow Rock near the small village of Lamine has a ramp for access to the Lamine River.

It would be the Missouri River but I'm not sure where you would go. Right now she is running pretty high and flooding in places

Don't know. Missouri river is just outside the park. Not sure if thats floatable.