How fast does the river flow? How is it measured?

by The Brazos River Authority

A rivers speed is measured by cubic feet per second (cfs) or how quickly a cubic foot of water passes by a set point for a period of one second.  The set point is usually a gauge managed by the United States Geological Survey (USGS) set at intervals along a water course. You can find how fast the Brazos River and its tributaries flow by going to this link.



About us

The Brazos River Authority was created by the Texas Legislature in 1929 as the first state agency in the country with the purpose of developing and managing the water resources of an entire river basin. Today, the Authority develops and distributes water supplies, provides water and wastewater treatment, monitors water quality, and pursues water conservation through public education programs. Although the Authority is an agency of the state, it does not levy or collect taxes and is entirely self-supporting.


The information provided on this site is intended as background on water within the Brazos River basin. There should be no expectation that this information is all encompassing, complete or in any way examines every aspect of this very complex natural resource. 


If you have questions about a post or would like additional information, please contact us at or call 888-922-6272.