Columbia River Basin Dam Map - Corps of Engineers & Other Dams #1988047 (License: Personal Use)

The map illustrates the extensive dam infrastructure across the Columbia River watershed, spanning Washington, Oregon, Idaho, and parts of Montana and Canada. Red markers denote dams managed by the U.S. Army Corps of Engineers-including Grand Coulee, Chief Joseph, and Bonneville-while yellow markers indicate facilities owned by other agencies or utilities, such as those in the Snake River system. Key reservoirs like Lake Roosevelt, Lake Pend Oreille, and Jackson Lake are also labeled.

Used on hydroelectric power, water resource management, or environmental policy webpages to visualize dam distribution and ownership; serves users researching regional infrastructure, river ecology, or energy generation in the Pacific Northwest.