An estimated 30,000 people participated in the River Regatta Saturday.
They floated down the Colorado River between Laughlin and Bullhead City, Arizona, on craft that varied from inner tubes to elaborate rafts floating on barrels, according to the Las Vegas News Bureau.
This year's theme was Pirates of the Colorado. Residents along the river were also encouraged to decorate their homes in the pirate theme for possible prizes.
Despite the fun, there was a lot of trash to clean up Saturday along the river.