Used for navigation of the lower river, anyhow?

无论如何，用于下游河流的航行？

As I mentioned earlier, for the first time in history, the federal government is expected to declare a water shortage on the lower Colorado River which will impact water supply for Nevada and Arizona residents and farmers starting in 2022.

正如我之前提到的，联邦政府预计将在历史上第一次宣布科罗拉多河下游缺水，这将从 2022 年开始影响内华达州和亚利桑那州居民和农民的供水。