If you're looking for fun in Montrose this week, the free FUNC Fest at the river bottom is where the party will be. Get our free mobile appWhat Is FUNC Fest in Montrose? FUNC Fest, short for Fun on the Uncompahgre, is held at the Montrose Water Sports Park and Riverbottom Park. LOOK: Thirteen Cool Facts About Colorado’s Uncompahgre River Western Colorado is home to the Colorado River, the Gunnison River, and the Uncompahgre River. Gallery Credit: Wesley AdamsMORE: 10 Facts You May Not Have Known About Colorado's Fort Uncompahgre Colorado's Fort Uncompahgre is believed to be one of the first Anglo settlements built on the Western Slope.