在1948年至2004年间，位于美国西北部地区的哥伦比亚河的流量减少了约14%，这主要是由于降水量减少以及美国西部用水量增加。
The Columbia River in the us Northwest lost about 14 percent of its volume from 1948 to 2004, largely because of reduced precipitation and higher water usage in the west.
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。
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.
根据维基，摩特诺玛瀑布是美国第三高的瀑布，总高度有620多尺，坐落在哥伦比亚河峡谷旁。
According to wiki, Multnomah Falls is the third tallest waterfall in US. The total height of this waterfall is about 620 feet. It is located near the Columbia River Gorge.
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