Texas Flood Watch

The need for timely, accurate, and complete streamflow data is critical during floods and heavy rains because these data are relied on by local, State, and Federal emergency management personnel for flood response purposes. The USGS Texas Water Science Center is developing flood early warning systems with elevated streamgages, redundant monitoring and reporting equipment, and multiple communication systems. These systems will give first responders and citizens reliable and timely data during rapidly changing flood events. For more information about our flood expertise, visit our Flood Early Warning Science in Texas web page.

Comparison of Historical Flooding

Select a Flood Event:

Flow condition map

Current Streamflow

Streamflows that are much above normal are shown in blue and black on the map.

Most recent flow condition map

Current Updates


Two fully-autonomous Twitter feeds distribute water level and precipitation data during flooding or severe rainfall.



Large Floods in the United States

U.S. Geological Survey Circular 1245

100-Year Flood—It's All About Chance

U.S. Geological Survey General Interest Publication 106

Tracking Change Over Time—River Flooding

U.S. Geological Survey General Interest Publication 133a