The Lower Falls of the Yellowstone River drop a stunning 308 feet (94 meters) to the canyon floor below—twice as far as Niagara Falls.

黄石河飞流直下大峡谷谷底，形成的“下黄石瀑布”落差高达308英尺（94米），是尼亚加拉大瀑布的二倍。

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"There is already a drop in supply. Because, on the east side of the river, that is one of the most productive estuaries in the world for oysters.

VOA: standard.2010.05.08

Run of river exploits the elevation drop of a river.

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Chandler said the U.S. Army Corps of Engineers had adjusted a nearby dam to drop the river's water level by 2 feet and was regulating the current to make it easier on the divers, whom Chandler directs.

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It will be Saturday before the level of the River Derwent at Malton starts to drop, the Environment Agency has said.

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