Images

The Dalles navigation lock operating on the Columbia River
The Dalles navigation lock is located about 190 miles inland from the Pacific Ocean. It is part of a system of dams on the Columbia and Snake rivers that help move about 10 million tons of cargo each year.

Download Image: Full Size (0.45 MB)
Photo by: U.S. Army Corps of Engineers |  VIRIN: 110325-A-AH115-101.JPG