2017 Map of Lake Shannon

About this map

Lake Shannon and the winding Skagit River dominate this portion of the Skagit Valley, where the transition from riparian lowlands to the steep rises of the Mount Baker National Forest is sharply defined. The settlement of Concrete sits at the western edge of the quadrangle, serving as a gateway for the timber and hydroelectric infrastructure that shaped this region. To the east, the small community of Van Horn is situated along the river's path, near the junctions of roads like Yeager Rd and Moen Rd. The topography ascends rapidly toward Jackman Ridge and the high basins containing Thunder Lakes, illustrating the sheer verticality of the North Cascades. Numerous drainages such as Jackman Cr and Thunder Cr provide a look at the hydraulic network feeding into the main river system during this modern era of land management.