The Cascade River flows through the heart of Banff National Park in Alberta, Canada, offering anglers a classic mountain freestone fishing experience set against one of the most dramatic landscapes in the Canadian Rockies. The river originates in the high alpine terrain of the park and flows southward before emptying into Lake Minnewanka reservoir, carving through canyon sections and open valley stretches along the way. Fishing the Cascade means navigating a true wilderness stream environment, with cold, clear mountain water, cobble and gravel substrate, and the kind of pocket water and riffle-pool sequences that define high-elevation freestone rivers. The river's character changes considerably from its upper reaches above Lake Minnewanka to the canyon sections near Stewart Canyon, where the gradient steepens and the current quickens considerably.