USGS National Water Information System

Central data management of the USGS for water data that provides access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands. Includes data on water use and quality, groundwater, and surface water.

美国地质调查局（USGS）对水数据进行的中央数据管理，提供了对所有50个州、哥伦比亚特区、波多黎各、维尔京群岛、关岛、美属萨摩亚以及北马里亚纳群岛共计约150万个监测点的水资源数据访问。包含水利用与水质、地下水以及地表水等方面的数据。