Board of Directors Approves the 2017 Annual Groundwater Report

The average annual rate of subsidence in centimeters/year from 2013-2017.

Houston, TX> The Harris Galveston Subsidence District Board of Directors approved the 2017 Annual Groundwater Report at the June 13, 2018, regular Board meeting. The report details the use of groundwater and other alternative sources of water within Harris and Galveston County in 2017 and includes the context of water use data collected by the District since enacted in 1975. Other data included in the report includes estimated subsidence rates from the Districts subsidence monitoring network, aquifer water-level information provided by the U.S. Geological Survey, and climatic data provided by the National Climatic Data Center. In general, areas of highest subsidence rates include northern and western Harris County (primarily Area 3) and Northern Fort Bend County. Subsidence was also noted in nearby Brazoria and Montgomery Counties. Generally, subsidence rates are less than 0.1 feet per decade in district regulatory area 1 and 2 where groundwater use has been reduced to 10% and 20%, respectively, of the total water demand.

Click here to view the 2017 Annual Report