The U.S. Geological Survey Water Resources Division provides real-time streamflow data for the nation through the WaterWatch program. The real-time data reflects current conditions over a short-term period of several hours and is gathered from streamgages at monitoring points along rivers and streams throughout the nation.

Based on current streamflow conditions, each mapped streamgage location is updated with a color reflecting current streamflow conditions as a percentile of daily streamflow expected for the time of the year. The expected streamflow is based on historic records from streamgages in place for at least 30 years. A percentile greater than 75 is considered above normal streamflow, a percentile between 25 and 75 is considered normal streamflow, and a percentile less than 25 is considered below normal streamflow. A legend at left described the color-coding system used to reflect the percentiles.

Real-time daily streamflow conditions maps are available from the USGS National Water Information System. The maps for Kentucky, Tennessee, North Carolina, South Carolina, Georgia, Alabama, and Mississippi are presented below. Click the maps to access additional water information for the state from the USGS National Water Information System, including site information, surface water, ground water, and water quality. For realtime streamgage data for more states, visit http://water.usgs.gov/waterwatch/.