Geoscience Reference
In-Depth Information
In 1934, the U.S. Army Corps of Engineers began construction of a new type of lock and
dam at Gallipolis, Ohio, just below the mouth of the Kanawha River. It is shown here in a c.
1936 construction photograph. When completed in 1938, the new “high-lift” dam replaced
six old locks—three on the Ohio and three on the Kanawha. In the decades since, a number
of other big dams have been built to replace the river's old locks. (Courtesy U.S. Army
Corps of Engineers.)
