Browsing by Subject "surface water"
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Item 2002 Water Quality Inventory - Sources of Pollution for Water Bodies Not Meeting Water Quality Standards(Texas Commission on Environmental Quality, 2002) Texas Commission on Environmental QualityItem 2002 Water Quality Inventory - Sources of Pollution for Water Bodies with Concerns for Use Attainment(Texas Commission on Environmental Quality, 2002) Texas Commission on Environmental QualityItem 2002 Water Quality Inventory - Sources of Pollution for Water Bodies with Water Quality Concerns(Texas Commission on Environmental Quality, 2002) Texas Commission on Environmental QualityItem 2002 Water Quality Inventory Stream Flow Types and Information Used to Determine the Dissolved Oxygen Criteria(Texas Commission on Environmental Quality, 2002) Texas National Resource Conservation CommissionItem 2004 Texas 303(d) List (May 13, 2005)(Texas Commission on Environmental Quality, 2005) Texas Commission on Environmental QualityItem 2006 Texas Water Quality Inventory - Sources of Impairment and Concerns(Texas Commission on Environmental Quality, 2007) Texas Commission on Environmental QualityItem 2006 Texas Water Quality Inventory Water Bodies Evaluated (June 27, 2007)(Texas Commission on Environmental Quality, 2007) Texas Commission on Environmental QualityItem 2006 Texas Water Quality Inventory Water Bodies with Concerns for Use Attainment and Screening Levels (June 27, 2007).(Texas Commission on Environmental Quality, 2007) Texas Commission on Environmental QualityItem 2008 Texas Water Quality Inventory - Sources of Impairments and Concerns(Texas Commission on Environmental Quality, 2008) Texas Commission on Environmental QualityItem 2008 Texas Water Quality Inventory Water Bodies Evaluated (March 19, 2008)(Texas Commission on Environmental Quality, 2008) Texas Commission on Environmental QualityItem 2008 Texas Water Quality Inventory Water Bodies with Concerns for Use Attainment and Screening Levels (March 19, 2008)(Texas Commission on Environmental Quality, 2008) Texas Commission on Environmental QualityItem 2010 Texas Water Quality Inventory Water Bodies Evaluated(Texas Commission on Environmental Quality, 2010) Texas Commission on Environmental QualityItem Assessment Summary(Texas Commission on Environmental Quality, 2007) Texas Commission on Environmental QualityItem Evaluation of power generation operations in response to changes in surface water reservoir storage(IOP Publishing, 2013-05-02) Stillwell, Ashlynn S.; Webber, Michael E.; Stillwell, Ashlynn S.; Webber, Michael E.We used a customized, river basin-based model of surface water rights to evaluate the response of power plants to drought via simulated changes in reservoir storage. Our methodology models surface water rights in 11 river basins in Texas using five cases: (1) storage decrease of existing capacity of 10%, (2) storage decrease of 50%, (3) complete elimination of storage, (4) storage increase of 10% (all at existing locations), and (5) construction of new reservoirs (at new locations) with a total increase in baseline reservoir capacity for power plant cooling of 9%. Using the Brazos River basin as a sample, we evaluated power generation operations in terms of reliability, resiliency, and vulnerability. As simulated water storage decreases, reliability generally decreases and resiliency and vulnerability remain relatively constant. All three metrics remain relatively constant with increasing reservoir storage, with the exception of one power plant. As reservoir storage changes at power plants, other water users in the basin are also affected. In general, decreasing water storage is beneficial to other water users in the basin, and increasing storage is detrimental for many other users. Our analysis reveals basin-wide and individual power plant-level impacts of changing reservoir storage, demonstrating a methodology for evaluation of the sustainability and feasibility of constructing new reservoir storage as a water and energy management approach.Item Executive Summary(Texas Commission on Environmental Quality, 2011) Texas Commission on Environmental QualityItem Ground-Water and Surface-Water Hydrology of Camp Barkeley, Taylor County, Texas(1996) Fisher, R. Stephen; Mace, Robert E. (Robert Earl), 1967-; Boghici, Erika M.Ground-water and surface-water investigations were conducted on Camp Barkeley, Taylor County, Texas, to provide the Texas Army National Guard with information needed to preserve environmental quality and resources while planning and conducting training and preparedness activities. Spatial information such as surface geology, watersheds, elevation data, floodplains, well locations, and water levels were converted to digital files and submitted to the Texas Army National Guard Geographic Information System office at Camp Mabry, Austin, Texas, for future use in managing the training facility. Similar investigations were conducted on Camps Bowie, Mabry, Maxey, and Swift, and Fort Wolters. Results of those studies are presented separately. Previous reports and public data files were examined to obtain background information on the camp and surrounding area. These data guided our more focused studies on the training facility. Ground-water studies included locating existing wells on and near the camp; installing new wells as needed for ground-water characterization; testing and sampling selected wells; determining ground-water levels, chemical compositions, and aquifer hydraulic properties; and developing a conceptual model of ground-water flow. Surface-water studies delineated watersheds and mapped floodplains. Alluvium along streams and the Antlers Formation are the principal aquifers in the Camp Barkeley area. Approximately 42 percent of all wells listed by the Texas Water Development Board (TWDB) in Taylor County produce from alluvium. Depths to water in existing wells vary both within and between formations, suggesting that the ground-water system is not well integrated. Groundwater compositions recorded in TWDB files show most samples to be fresh waters. A conceptual ground-water flow model resulting from this study indicates that local recharge most likely occurs through interconnected vertical fractures. Much of the water that infiltrates on topographically high parts of Camp Barkeley probably discharges at the edges of the mesas, with only minor discharge, if any, to deeper aquifers. The training facility resides in the Clear Fork River Basin. No significant permanent streams exist on the camp. Surface runoff flows to various first-order tributaries and creeks and ultimately to Lake Fort Phantom Hill, Clear Fork Brazos River, and the Brazos River. No significant 100-year floodplains exist on Camp Barkeley; however, severe rainfalls can produce heavy sheetflow and runoff that can quickly but temporarily fill arroyos and cause severe erosion.Item Ground-Water and Surface-Water Hydrology of Camp Bowie, Brown County, Texas(1996) Fisher, R. Stephen; Mace, Robert E. (Robert Earl), 1967-; Boghici, Erika M.Ground-water and surface-water investigations of Camp Bowie, Brown County, Texas, were conducted to provide the Texas Army National Guard information needed to preserve environmental quality and resources while planning and conducting training and preparedness activities. Spatial information such as surface geology, watersheds, elevation data, floodplains, well locations, and water levels were converted to digital files and submitted to the Texas Army National Guard Geographic Information System office at Camp Mabry, Austin, Texas, for future use in managing the training facility. Similar investigations were conducted at Camps Barkeley, Mabry, Maxey, and Swift, and at Fort Wolters. Results of those studies are presented separately. Previously published reports and public data files were examined to obtain background information on the camp and surrounding area. These data were used to guide more focused studies on the training facility. Ground-water studies included locating existing wells on and near the camp, installing new wells as needed, testing and sampling selected wells, determining ground-water levels, chemical compositions, and aquifer hydraulic properties, and developing a conceptual model of ground-water flow. Surface-water studies focused on delineating watersheds and mapping floodplains.Item Ground-Water and Surface-Water Hydrology of Camp Mabry, Travis County, Texas(1996) Fisher, R. Stephen; Mace, Robert E. (Robert Earl), 1967-; Boghici, Erika M.Ground-water and surface-water hydrologic investigations of Camp Mabry, Travis County, Texas, were conducted to provide the Texas Army National Guard information needed to plan and conduct training and preparedness activities while preserving environmental quality and resources. Spatial information such as surface geology, watersheds, elevation data, floodplains, well locations, and water levels were converted to digital files and submitted to the Texas Army National Guard Geographic Information System office at Camp Mabry, Austin, Texas, for future use in managing the training facility. Similar investigations were conducted at Camps Barkeley, Bowie, Maxey, and Swift and at Fort Wolters. Results of those studies are presented separately. Previously published reports and public data files were examined to obtain background information on the camp and surrounding area. These data were used to guide more focused studies on the training facility. Ground-water studies included locating existing wells in and near the camp, installing new wells as needed, testing and sampling selected wells, determining ground-water levels, chemical compositions, and aquifer hydraulic properties, and developing a conceptual model of ground-water flow. Surface-water studies focused on delineating watersheds and mapping floodplains.Item Ground-Water and Surface-Water Hydrology of Camp Maxey, Lamar County, Texas(1996) Fisher, R. Stephen; Mace, Robert E. (Robert Earl), 1967-; Boghici, Erika M.Ground-water and surface-water investigations of Camp Maxey, Lamar County, Texas, were conducted to provide the Texas Army National Guard information needed to preserve environmental quality and resources while planning and conducting training and preparedness activities. Spatial information such as surface geology, watersheds, elevation data, floodplains, well locations, and water levels were converted to digital files and submitted to the Texas Army National Guard Geographic Information System office at Camp Mabry, Austin, Texas, for future use in managing the training facility. Similar investigations were conducted at Camps Barkeley, Bowie, Mabry, and Swift, and at Fort Wolters. Results of those studies are presented separately. Previously published reports and public data files were examined to obtain background information on the camp and surrounding area. These data were used to guide more focused studies on the training facility. Ground-water studies included locating existing wells in and near the camp, installing new wells as needed, testing and sampling selected wells, determining ground-water levels, chemical compositions, and aquifer hydraulic properties, and developing a conceptual model of ground-water flow. Surface-water studies focused on delineating watersheds and mapping floodplains.Item Ground-Water and Surface-Water Hydrology of Camp Swift, Bastrop County, Texas(1996) Fisher, R. Stephen; Mace, Robert E. (Robert Earl), 1967-; Boghici, Erika M.Ground-water and surface-water investigations of Camp Maxey, Lamar County, Texas, were conducted to provide the Texas Army National Guard information needed to preserve environmental quality and resources while planning and conducting training and preparedness activities. Spatial information such as surface geology, watersheds, elevation data, floodplains, well locations, and water levels were converted to digital files and submitted to the Texas Army National Guard Geographic Information System office at Camp Mabry, Austin, Texas, for future use in managing the training facility. Similar investigations were conducted at Camps Barkeley, Bowie, Mabry, and Swift, and at Fort Wolters. Results of those studies are presented separately. Previously published reports and public data files were examined to obtain background information on the camp and surrounding area. These data were used to guide more focused studies on the training facility. Ground-water studies included locating existing wells in and near the camp, installing new wells as needed, testing and sampling selected wells, determining ground-water levels, chemical compositions, and aquifer hydraulic properties, and developing a conceptual model of ground-water flow. Surface-water studies focused on delineating watersheds and mapping floodplains.