A gorge, about 48 km (30 mi) long, of north-central Washington, carved by the Columbia River. It is fed by water from the Grand Coulee Dam.

美国华盛顿州中北部一个峡谷，长约48公里(30英里)，为哥伦比亚河冲刷形成，其水来自于大古力水坝。

youdao

The puny Elwha dams, which produce a mere 28.6 megawatts of electricity compared with the 7, 000 megawatts generated by the Columbia's Grand Coulee Dam alone, would not seem to have much relevance to a discussion of Columbia dams.

ECONOMIST: Water in the West (2)