The most popular fishing areas on the Squamish are just up and downstream of the Cheakamus outlet, and what has come to be known as the 24 mile section (26 to 32 kilometers above Cheakamus bridge). This portion of the scenic upper Squamish has several gravel bars where anglers can camp along the river on weekends.here are resident and sea running Dolly Varden, cutthroat trout and a few rainbow trout. The Squamish has four main tributaries: the Elaho, the Ashlu, the Cheakamus and the Mamquam. Each has its own unique eco-system. There are also many creeks feeding the Squamish River.