BetaBetaDataset
To visualize the data collected at surface water sites, groundwater sites, atmospheric sites, and springs in the United States
The National Water Information System (NWIS) Mapper provides access to over 1.5 million sites contained in USGS Water Data for the Nation, including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.
Interactive maps illustrating historical surface-water, groundwater, springs and atmospheric data
Data obtained through national surveillance. At any given site, one or more types of data may be available. Where data collection is continuous, data may be available in real-time, as individual observations, or as daily summaries. Some sites may have data from water-quality samples. At stream sites, data may be available for flood peaks. For surface-water and groundwater sites, data may be available for individual field measurements. For many active or recently active sites, there may also be an online annual summary report.