Rock Creek flows 50 miles through the Sapphire Mountain range in western Montana, from its origin at the confluence of the East Fork and West Fork in Granite County northward through Missoula County to join the Clark Fork River near Clinton. This Blue Ribbon trout stream boasts an exceptional 2,000 fish per mile and ranks among Montana's premier freestone rivers. The drainage maintains excellent fish habitat and water quality, largely due to extensive public land ownership managed to provide quality fish and wildlife habitat. The river's exceptional fishery, abundant public access spanning more than 30 miles, and proximity to Missoula contribute to its popularity among wade fishermen and floaters alike.