The South Fork Cache la Poudre River, also known locally as "Little South," flows through Larimer County in northern Colorado. Originating from Icefield Pass in Rocky Mountain National Park, it travels through the Comanche Peak Wilderness and Cache La Poudre Wilderness before joining the main stem of the Cache la Poudre River. The South Fork runs through picturesque Medicine Bow Mountain terrain, offering anglers pristine wilderness fishing in a beautiful alpine setting. The river is part of Colorado's first designated Wild and Scenic River system, with segments classified as both Wild and Recreational. This unique watershed provides critical habitat linkages between the Rocky Mountains and plains river systems, making it ecologically significant for native species and migratory wildlife.