https://lnkd.in/g-6YkVmS Significant brackish groundwater resources exist within the Gulf Coast Aquifer System near Houston, Texas in Harris, Galveston, Fort Bend, and surrounding counties. Information about the report can be found at the Harris-Galveston Subsidence District website. This is accomplished through the careful regulation of groundwater withdrawals, working in collaboration with surface water suppliers. The reduction in pumpage has resulted in the increase of water- level in the aquifer system in those areas and a reduction in subsidence rates. The Harris-Galveston Subsidence District (HGSD) is a special purpose district created by the Texas Legislature in 1975. Bend County Subsidence District, Star Groundwater Conservation District. The Houston area's two subsidence districts the Harris-Galveston Subsidence District, HGSD, and the Fort Bend Subsidence District have worked to monitor subsidence and mitigate it through a variety of water management efforts. City of Houston, TX: Boards - Granicus of Houston, The results of this study confirm the potential for compaction in the Jasper aquifer and subsidence to occur from brackish groundwater development particularly in up-dip areas near where the Jas-per is being used for freshwater supply. Creation year: 1975 (64th Texas Legislature). It is the purpose of the HGSD Regulatory Plan to establish policy in the area of groundwater regulation, permits and enforcement. v24Wf\+p7Ak@Q(lCJ'$6(kKa FdbT41l1Y$k@*nx(7TK6A9. LX 0o9 'c* _Kq3b2'T9I?. Additionally, the US Geological Survey (USGS) has begun work on the GULF-2023 model, with an anticipated completion date in the fall of 2021. Harris-Galveston Subsidence District reposted this, Mitigation of human-induced land subsidence starts with the regulation of resource extractions. Since the mid 1970s, the USGS and the Harris-Galveston Subsidence District have conducted scientific investigations and subsidence monitoring for over 40 years. Click here to read our blog about how it could be addressed with a new USGS subsidence mapping tool. Harris-Galveston Subsidence District, the People who live in the lower lying coastal areas (i.e., lower elevations and flatter topography) have much more reason to be concerned with subsidence than those who reside further inland in areas of higher elevations with more topographic relief. The U.S. Geological Survey, in cooperation with the Harris Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, Brazoria County Groundwater Conservation District, and Lone Star Groundwater Conservation District, has produced this dataset of water-level changes and approximate water-level altitudes in the Chicot, Evangeline, and Jasper aquifers in the Houston-Galveston region, Texas. The District was created to provide for the regulation of groundwater withdrawal throughout Harris and Galveston counties for the purpose of preventing land subsidence, which leads to increased flooding. Subsidence is known to have occurred in the southern part of Montgomery County based on monitoring and long-term surveying of land surface. . The cumulative compaction in the Chicot-Evangeline undifferentiated aquifer is measured at 13 endstream endobj 190 0 obj <>stream SMU is developing subsidence maps from 1992 to 2023 by integrating data obtained from multi-temporal Interferometric Synthetic Aperture Radar (InSAR), a remote sensing technique using data collected from orbiting satellites, to quantitatively evaluate subsidence over specific periods of time across the region. In addition HGSD provides water conservation, education, and outreach programs to underscore the importance of water conservation in the community. The Harris-Galveston Subsidence District (District) is a special purpose district created by the Texas Legislature in 1975. The nearby hydrograph shows that when a subsidence district was created around 1976 (red line), groundwater levels in the Chicot Aquifer rose substantially. Occasionally, the district undertakes a review of the regulatory plan, working with other entities to assess future water needs and ensure that the plan will be successful in ceasing subsidence. Groundwater withdrawn from the Chicot-Evangeline and Jasper aquifers has been the primary source of Fax: 281-232-3355. Brazoria County Groundwater Conservation District, below the land surface due to groundwater withdrawals. Click here for more information about the Subsidence District. Surface water shift through $381M Luce Bayou Project keeps homes limits By Vanessa Holt. The accuracy of the referenced well land-surface altitude data has improved through time and the most Though subsidence rates are moderate in Fort Bend county, the continued heavy dependence of groundwater use may result in increased subsidence and associated impacts such as flooding and infrastructure damage. Finally, use the Tab key to toggle the links within each districts. We look forward to each Directors contribution to the HGSDs Board. Areas of the nature center show reminiscences of the neighborhood and serve as an important reminder of what subsidence can do. 1976 Pressefoto Charles "Chuck" R. Bowcock, Harris-Galveston Newsroom - Harris County, Texas Subsidence regulation districts and their creation timeline The Harris-Galveston Coastal Subsidence District. regional water-level change maps. On the first stop, we visited the Texas City Rainwater Pump Station, where Texas Citys Emergency Management team takes runoff rainwater from ditches in the area and pumps it into Moses Lake. Interpolated modeled water-level altitude surfaces were only used to compute differences when wells were PDF Harris Galveston Subsidence District - Texas Extensometers and Subsidence. The Authority has entered into a Water Supply Contract with the City of Houston to obtain treated surface water from Houston. In the Houston-Galveston region, land subsidence is caused by compaction of fine-grained aquifer sediments (silts and clays) below the land surface due to groundwater withdrawals. Subsequent to establishing the Harris-Galveston Subsidence District, the Texas State Legislature In 2001, the Texas legislature created the West Harris County Regional Water Authority (the Authority) to, among other things, reduce groundwater usage in, and to provide surface water to, the western portion of Harris County and a small portion of Fort Bend County. Water-level altitude contours, wells, and compaction data have been combined in an interactive map that allows users to view annual water-level altitudes from 1977 through the present, water-level changes over time, and historical time series of compaction data. larger image. 2 0 obj 2003: Regulatory areas divided into area A, which includes the Richmond-Rosenberg endstream endobj 191 0 obj <>stream Extensometers and Subsidence - San Jacinto River Authority December 1, 2020. groundwater withdrawal on land subsidence in the Houston-Galveston region of Texas. Population projections were developed at the census block level for each decade from 2010 to 2070 using the 2010 U.S. Census as a population baseline. Chicot-Evangeline (undifferentiated) and Jasper, which are composed of laterally discontinuous deposits Brazoria County Groundwater Conservation District . Harris-Galveston Subsidence District Meeting Agendas, Minutes and Hearing Notices. Purpose: To manage groundwater withdrawal and enforce groundwater regulation within the district to prevent subsidence. Learn about the history of the Harris-Galveston Subsidence District. USGS TXWSC - Coastal Science users to view annual water-level altitudes, water-level changes over time, and historical time series of Lone Star Groundwater Conservation District - Phase 3 Site-Specific Subsidence Investigations (December 12, 2022), Lone Star Groundwater Conservation District - Phase 2 Subsidence Investigations (January 26, 2022), Subsidence Study Phase 2 Final Report (as approved on May 10, 2022), Subsidence Study Phase 2 Task 1 and Task 2 Draft Report, Subsidence Study Phase 2 Scope of Work (as approved on April 13, 2021), Subsidence Study Phase 1 Final Report (as approved on August 11, 2020), Subsidence Study Phase 1 Draft Final Report (pending Board approval on August 11, 2020). This report, prepared by the U.S. Geological Survey in cooperation with the Harris-Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, Lone Star Groundwater Conservation District, and Brazoria County Groundwater Conservation District, is one in an annual series of reports depicting water-level altitudes and water . <> Subsidence can be an important issue in certain areas such as the Gulf Coast region. Creation year: 2003 (approved by Brazoria County voters in 2005). Land Subsidence. Subsidence Lone Star Groundwater Conservation District Kasmarek, M.C., and Ramage, J.K., 2016, Water-Level Measurement Data Collected during 2015-2016 and Approximate Long-term Water-Level Altitude Changes of Wells Screened in the Chicot, Evangeline, and Jasper Aquifers, Houston-Galveston Region, Texas: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F77H1GP3. This button displays the currently selected search type. Harris-Galveston Subsidence District | The Texas Alliance of The District was created to provide for the regulation of groundwater withdrawal. Explore Groundwater-Level and Compaction Data in the Chicot, Evangeline and Jasper Aquifers. Purpose: To preserve, conserve and protect Montgomery Countys groundwater supplies. Population projections were developed at the census block level for each decade from 2010 to 2070 using the 2010 U.S. Census as a population baseline. Next, we traveled to the infamous Brownwood Subdivision, which was abandoned due to substantial subsidence in the 1980s. Field inspector Robert Loveland sets up GPS monitoring site P013 that delivers data on land subsidence, or the sinking of land surface, to the Harris-Galveston Subsidence District, Tuesday . `c331vf2~+kRbs "cX1K3H3200 iy@Se! g= SMU is developing subsidence maps from 1992 to 2023 by integrating data obtained from multi-temporal Interferometric Synthetic Aperture Radar (InSAR), a remote sensing technique using data collected from orbiting satellites, to quantitatively evaluate subsidence over specific periods of time across the region. When we pump large amounts of groundwater from the aquifers beneath us, we pull water out of the many layers of clay, which can cause the clay to compact. 1045, 1989 Tex. Southeast Texas Groundwater Conservation District; Other Districts. Now on its fifth iteration since 1976, the plan describes the different regulatory areas throughout the district, defines groundwater withdrawal limits for each area, and provides guidelines for permitting. Lone Since its creation, subsidence rates have slowed greatly. The Board meetings are typically held at 5:30 PM on the first Wednesday of the month at The Lakehouse at Towne Lake, 10000 Towne Lake Parkway, Cypress, Texas 77433. The model will simulate the impacts of groundwater use on aquifer water levels and land subsidence throughout the region and will be used to evaluate regulatory scenarios of interest to both subsidence districts. In cooperation with Harris-Galveston Subsidence District, the City of Houston, Fort Bend County Subsidence District, Lone Star Groundwater Conservation District, and Brazoria County Groundwater Conservation District, the U.S. Geological Survey Texas Water Science Center Gulf Coast Program collects, processes, and interprets groundwater-level . They have successfully slowed-down land subsidence, decreased flood risks, and overall maintained the viability of the area. 2019 Annual Groundwater Report Appendix A, 2019 Annual Groundwater Report Appendix B, 2019 Annual Groundwater Report Appendix C. Pursuant to Fort Bend Subsidence District (the District or FBSD) Resolution No. 9 were here. This report documents the impact of groundwater use on aquifer water levels and subsidence within the District and was prepared in accordance with an Inter-local Agreement between the District and the Harris-Galveston Subsidence District (HGSD). Managing how groundwater resources are used is key to controlling subsidence. Datasets of water-level changes and altitudes in the Chicot, Evangeline, and Jasper aquifers. ArcGIS Online Map of Subsidence Rates in Fort Bend and Surrounding Counties, Texas, USA, 2020 Annual Groundwater Report Executive Summary, ArcGIS Online Map of Subsidence Rates in Fort Bend and surrounding Counties, Texas, USA. The RGUP originally started in 2010 as the Harris-Galveston Subsidence District (HGSD) 1999 Regulatory Plan Update, but due to its benefits to other regional groundwater regulatory agencies, the Fort Bend Subsidence District (FBSD) and the Lone Star Groundwater Conservation District (LSGCD) joined the collaborative effort in 2010.The primary benefit of collaboration between these three entities is that each of them could use the RGUP to vet their existing regulatory plans using updated population/water demand data and groundwater modeling capability, and in the case of HGSD and FBSD, investigate the physical effects of changing their existing regulatory plans to accommodate the practical realities facing their stakeholders while successfully completing the Districts mission objectives. Purpose: To maintain the quality and availability of Brazoria Countys groundwater resources for current users and future generations. Field inspector Robert Loveland sets up GPS monitoring site P013 that delivers data on land subsidence, or the sinking of land surface, to the Harris-Galveston Subsidence District . Lone Star Groundwater Conservation District, Brazoria County Groundwater Conservation District, Fort geographic information system (GIS) and used for the construction of regional water-level altitude and Since it is not a GCD, HGSD participates in the activities of GMA 14 as an inter-local participant. Community <>stream If the elevation of your house is only 10 feet above sea-level and you lose 10 feet of elevation because of subsidence, your house is now under water. Pay Your Tax Bill Online Purpose: To manage groundwater withdrawal and enforce groundwater regulation throughout Harris and Galveston counties, in hopes of preventing the land subsidence that leads to increased flooding.. Understanding subsidence in the Houston-Galveston region
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