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.

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。

youdao

As the narrator films the crashing waters of 611-foot Multnomah Falls outside of Portland, Ore. with his iPhone, he informs viewers that he means business.

FORBES: Exploitation Or Honesty: Should Filmmaker Use Her Brother's iPhone Video Of His Own Madness?