The controlled flood of the Colorado River in the Grand Canyon can be monitored in real time on the U.S. Geological Survey's (USGS) Web site. Starting on March 26 and continuing for seven days, the Bureau of Reclamation (BOR) is releasing approximately 45,000 cubic feet of water per second from Glen Canyon Dam. Line graphs of provisional stream flow data at 15 sites in Arizona are being made available in real time on the Internet via satellite telemetry technology. "This controlled flood will provide an excellent opportunity to demonstrate the usefulness of the real-time network during flooding conditions." Historical stream flow data is also available, as are calculated hydrographs, channel sand data, and detailed fact sheets on the rationale of the study and data collection methods.
http://wwwdaztcn.wr.usgs.gov/flood.html