2014 Map of Silcott Island

About this map

Lower Granite Lake and the winding Snake River dominate this landscape where Asotin, Garfield, and Whitman counties converge. The geography is defined by deep incisions into the plateau, such as Steptoe Canyon and Stuart Canyon, which channel water toward the river valley. Small riverfront sites like Silcott and Moses sit along the southern bank, connected by Indian Timothy Bridge. South of the river, the terrain rises sharply toward Flerchinger Ridge, cut by the drainages of Alpowa Cr and Maguire Gulch. The map captures a transitional river environment where Silcott Island sits as a prominent feature within the reservoir-influenced waters of the Snake River, reflecting the modern hydrological management of this tri-county border region.