The Hydro-Climatic Data Network, or HCDN, consists of streamflow records for 1,659 sites throughout United States and its Territories. Records span the period 1874 through 1988, and represent a total of 73,231 water years of information.
Links by map location or station number to real-time stage and streamflow, real-time water quality, ground-water data, long-term hydrographs, and annual water-data reports to view and download for past and current water conditions in North Dakota.
Flood map of Kansas link to real-time data for stream gaging stations and links to flood press releases, historic floods of Kansas, flood frequency data, photos, information on hydrology of floods, and flood hazard maps.
Homepage for the Missouri District Water-Quality Data & Analysis Section with links to data networks, projects, data availability, mobile laboratories, sampling boat, quality assurance practices, and real-time water-quality data.
Main page for National Hydrography Dataset (NHD), a comprehensive set of digital spatial data about surface water features, with links to references, data, software tools, applications, tutorials, technical support, and data maintenance.