This is the town where A River Runs Through It, the Clark Fork River, usually a tranquil, meandering river in the summer and fall.
Watch long enough from the Higgins Street Bridge and you can imagine Robert Redford or Brad Pitt stepping out with a fly rod.
In the spring, the rains and snow melting from the mountains raises the river to a cold and raging torrent -- and Montanans do what's natural for them. They get out in the middle of it.
Kayaking,
And yes, surfing...
Missoulians have built a barrier off the shore to create a waterpark, Brennan's Wave. Brennan Guth was a kayaker who died at age 32 in an accident in Chile. The barrier causes a perpetual eddy and lets a kayaker or surfer do their thing while not going anyplace.
Those Missoulians know how to have fun.