Riggins, Idaho is home to about 413 people on most days. But not during race weekend. During the Salmon River Jet Boat Races the population of Riggins increases five-fold. The Salmon River Jet Boat Races, held the third weekend in April, are legendary in this quaint little canyon town that sits at the confluence of the Salmon River and the Little Salmon River. Known as Idaho's whitewater capital thanks to the Salmon, or "River of No Return", the churning whitewater on this river has been giving jet boat racers a run for their money for more than three decades.