Funding for this site is provided by the cooperators / programs below:

Corps of Engineers, Galveston District

For specific information about conservation pool elevation, current storage and percent full, access these data maintained by the Texas Water Development Board for major Texas reservoirs here.

Rainfall Disclaimer Rainfall monitoring sites operated by the USGS in Texas are strictly for operational purposes. Precipitation data, if available for this station, are temporary and will only be displayed for 120 days. Precipitation data will NOT be available for retrieval following the 120-day display period. The temporary classification means that documented routine inspections and other quality assurance measures are not performed that would make the data acceptable for archival, retrieval, or future use in general scientific or interpretive studies.

Retransmission, forecasts and summary by the National Weather Service

Datum of gage changed from NGVD 1929, 1973 adjustment to NAVD 1988, 2001 adjustment, on Oct. 1, 2008. New datum is 2.29 ft below previous datum.

On February 7, 2020, sensors for reservoir elevation were moved to the new outlet structure. These data show a jump as a result of the move to the new location.

The reservoir outflow structure consists of six gates. Discharge through the gates are computed using provisional gate-opening ratings provided by USACE and are based on reservoir elevation and the opening of each gate. These ratings and computations have not been calibrated based on USGS discharge measurements. Total outflow from the reservoir is captured at downstream USGS station 08072600 - Buffalo Bayou at State Hwy 6 nr Addicks, TX, where data are collected and published using standard USGS methods. However, in addition to reservoir outflow, this gage also captures flow from Clodine Ditch and Barker Ditch. The USGS operates USGS station 08072520 - Clodine Ditch at Noble Rd nr Addicks, TX, while Barker Ditch is ungaged.

Upstream View