The lock is a single lift type, 86 feet wide and 683 feet long, with a 15-foot minimum depth over the sills. The vertical lifts average 75 feet. The lock is located on the Washington side of the Columbia River.
Geology -- Washington (State); Waterfalls; Volcanic rock; Canyons
Photo of Dry Falls, a dry cliff that stands 400 ft. high and 3.5 miles wide. Dry Falls is a feature of Grand Coulee Canyon, which is part of the channeled scablands of eastern Washington.