USGS Washington Water Science Center
General Web Pages
River and Lake Data
Surface Water Statistics
Ground Water Data
Water Quality Data
The U.S. Geological Survey has a new Web server for its National Water Information System (NWIS) data which includes surface water, water-quality and groundwater data, and related site information. This includes:
Please note -- The data retrievals use a search page to identify the sites for your data retrievals. You should read the General Search Web page, as well as the specific ones for each type of data retrieval.