Gauges

California Department of Water Resources - Data Exchange Center provides current river conditions, stages, flows, river and tide forecasts, snowpack status, precipitation and snow information, satellite images, water supply and weather forecasts.
cdec.water.ca.gov/

Colorado Basin River Forecast Center - Forecasts, and information about rivers in the Colorado and eastern Great basins.
www.cbrfc.noaa.gov/

United States NWIS-W Data Retrieval - Access daily information from all the water level gauges in the US.
waterdata.usgs.gov/nwis-w/US/

West Virginia Gauges Information - New, Gauley, Tygart, Potomac and Big sandy River using data from the Army Corps of Engineers and USGS.
www.wvwhitewater.com/gauges.cfm

Whitewater River Streamflow Data - Links to realtime, mostly USGS streamflows for many Eastern US whitewater and recreational rivers.
www.geocities.com/robprotz/rivers.html