<Li> Rob Cox as Conroy </Li> <Li> Buck Simmonds as Humph </Li> <P> Although both the book and movie are set in Missoula and on the Blackfoot River, it was filmed in late June, early July 1991 in south central Montana in Livingston and Bozeman, and on the nearby upper Yellowstone, Gallatin, and Boulder Rivers . The waterfall shown is Granite Falls in Wyoming . Filming was completed in early September 1991 . </P> <P> An article published in the Helena Independent Record in July 2000 and based on recollections of people who knew both brothers noted a number of specifics about the Macleans--notably various chronological and educational details about Paul Maclean's adult life--that differ somewhat from their portrayal in the film and novella . </P>

Where was a river runs through it filmed