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2014 Map of Grand Coulee Dam

Name: 2014 Topographic Map of Grand Coulee Dam
Creator: U.S. Geological Survey
Published: 2014
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2014

About this map

The Grand Coulee Dam dominates this landscape, anchoring a complex geography where the borders of Douglas, Okanogan, Grant, and Lincoln counties meet. Established communities like Grand Coulee, Coulee Dam, and Mason City cluster near the dam's massive structure, reflecting the region's mid-20th-century development as a center for hydroelectric power and irrigation. The impounded waters of the Columbia River form the expansive Franklin D Roosevelt Lake, which is surrounded by the Lake Roosevelt National Recreation Area.

Away from the water's edge, the terrain transitions into distinctive landforms such as Washington Flats and the deep recesses of Hells Canyon and Rattlesnake Canyon. To the northeast, the map includes a portion of the Colville Indian Reservation, with the small settlement of Lone Pine situated near the lake's northern reaches. Further south, the landscape is marked by the basalt coulees and smaller water bodies like Long Lake and the drainage at Klobuschar Draw.