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2014 Map of Rock Island Dam

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

USGS Topo · Published 2014

About this map

The Columbia River carves a deep path through the center of this landscape, marking the boundary between Chelan and Douglas counties. At the heart of the waterway stands the Rock Island Dam, a massive infrastructure project that transformed the local economy and geography, creating Rock Island Lake and providing power to nearby settlements like Voltage. The surrounding terrain is defined by dramatic basalt formations and steep coulees, most notably the mouth of Moses Coulee where it meets the river valley.

Secondary settlements and rural corridors such as Bonspur are reached via a network of local roads including Palisades Rd and Nelson Siding Rd. High-elevation landmarks like Badger Mtn and the long expanse of Jumpoff Ridge overlook the river, while smaller water features like Hammond Lake sit tucked into the northern reaches. This 2014 survey documents a land where industrial hydroelectric development meets the arid, canyon-cut interior of central Washington.