Held since 1978, the event consists of entrants buying or building water crafts and floating down the Chehalis River from Pe Ell to Rainbow Falls State Park, which is one mile due east of the town.
The yearly event, which began in 1978, involves participants constructing or acquiring watercraft and traveling down the Chehalis River from Pe Ell to Rainbow Falls State Park, a distance of one mile east of the town.