The Harris-Galveston Subsidence District (HGSD) is the leader in groundwater regulation and subsidence monitoring in the State of Texas. Since 1975, the HGSD has taken a reasonable and inclusive approach to groundwater regulation resulting in a dramatic reduction in subsidence rates within the HGSD regulatory areas.
Throughout the years, HGSD has relied on high-quality relevant science. Science and research conducted by the HGSD to date includes:
- Evaluation of change in effective stress in the aquifer matrix as result of water use changes
- Development of numerous Predictions Relating Effective Stress of Subsidence (PRESS) sites throughout the HGSD that utilize detailed site specific information to predict future subsidence
- Development of numerous numerical models that allow the simulation of estimated subsidence as a result of future water demands
- Annual water-level measurement that has shown the impact of conversion requirements on the water-level in the aquifer
- And numerous other special studies