Expeditions & surveys; Railroad surveys; Lightning Lake (Mont.)
"Lightning Lake is a very beautiful sheet of water, so called from the fact that during Captain Pope's expedition, while encamped here, one of those storms so fearfully violent in this country occurred, during which one of his party was...
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.