Digital information describing observations taken at regular time intervals. The time interval may vary; the type of observed phenomena and the location typically do not.
The USGS collects continuous stage, discharge, and other instantaneous time-series data on the nations rivers. This Archive provides streamflow data and historical data, often several years worth.
National Strong-Motion Program home page with links to program news, recent events, and datasets of digitized accelerograms downloadable as PC (*.zip) and Unix (*.tar.z) files, data processing, stations, research, publications, and personnel.
U.S. Department of the Interior |
U.S. Geological Survey