Unified Interior Regions
Region 6: Arkansas-Rio Grande-Texas-Gulf
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Simulated effects of hydrologic, water quality, and land-use changes of the Lake Maumelle watershed, Arkansas, 2004–10
Lake Maumelle, located in central Arkansas northwest of the cities of Little Rock and North Little Rock, is one of two principal drinking-water supplies for the Little Rock, and North Little Rock, Arkansas, metropolitan areas. Lake Maumelle and the Maumelle River (its primary tributary) are more pristine than most other reservoirs and streams in...
Hart, Rheannon M.; Green, W. Reed; Westerman, Drew A.; Petersen, James C.; DeLanois, Jeanne L.
Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement
Recent (2009-10) studies documented significantly higher concentrations of polycyclic aromatic hydrocarbons (PAHs) in settled house dust in living spaces and soil adjacent to parking lots sealed with coal-tar-based products. To date, no studies have examined the potential human health effects of PAHs from these products in dust and soil. Here we...
Williams, E. Spencer; Mahler, Barbara; Van Metre, Peter C. Invertebrate and fish assemblage relations to dissolved Oxygen minima in lowland streams of southwestern Louisiana
Dissolved oxygen (DO) concentrations in lowland streams are naturally lower than those in upland streams; however, in some regions where monitoring data are lacking, DO criteria originally established for upland streams have been applied to lowland streams. This study investigated the DO concentrations at which fish and invertebrate assemblages...
Justus, B.G.; Mize, Scott V.; Kroes, Daniel; Wallace, James E.
Grain-size distribution and selected major and trace element concentrations in bed-sediment cores from the Lower Granite Reservoir and Snake and Clearwater Rivers, eastern Washington and northern Idaho, 2010
Lower Granite Dam impounds the Snake and Clearwater Rivers in eastern Washington and northern Idaho, forming Lower Granite Reservoir. Since 1975, the U.S. Army Corps of Engineers has dredged sediment from the Lower Granite Reservoir and the Snake and Clearwater Rivers in eastern Washington and northern Idaho to keep navigation channels clear and...
Braun, Christopher L.; Wilson, Jennifer T.; Van Metre, Peter C.; Weakland, Rhonda J.; Fosness, Ryan L.; Williams, Marshall L.
Investigation of land subsidence in the Houston-Galveston region of Texas by using the Global Positioning System and interferometric synthetic aperture radar, 1993-2000
Since the early 1900s, groundwater has been the primary source of municipal, industrial, and agricultural water supplies for the Houston-Galveston region, Texas. The region's combination of hydrogeology and nearly century-long use of groundwater has resulted in one of the largest areas of subsidence in the United States; by 1979, as much as 3...
Bawden, Gerald W.; Johnson, Michaela R.; Kasmarek, Mark C.; Brandt, Justin T.; Middleton, Clifton S. Modelling ecological flow regime: an example from the Tennessee and Cumberland River basins
Predictive equations were developed for 19 ecologically relevant streamflow characteristics within five major groups of flow variables (magnitude, ratio, frequency, variability, and date) for use in the Tennessee and Cumberland River basins using stepbackward regression. Basin characteristics explain 50% or more of the variation for 12 of the 19...
Knight, Rodney R.; Gain, W. Scott; Wolfe, William J. Changes in sources and storage in a karst aquifer during a transition from drought to wet conditions
Understanding the sources and processes that control groundwater compositions and the timing and magnitude of groundwater vulnerability to potential surface-water contamination under varying meteorologic conditions is critical to informing groundwater protection policies and practices. This is especially true in karst terrains, where infiltrating...
Wong, C.I.; Mahler, B.J.; Musgrove, M.; Banner, J.L.
Estimation of evaporation from open water - A review of selected studies, summary of U.S. Army Corps of Engineers data collection and methods, and evaluation of two methods for estimation of evaporation from five reservoirs in Texas
Organizations responsible for the management of water resources, such as the U.S. Army Corps of Engineers (USACE), are tasked with estimation of evaporation for water-budgeting and planning purposes. The USACE has historically used Class A pan evaporation data (pan data) to estimate evaporation from reservoirs but many USACE Districts have been...
Harwell, Glenn R. Spatial and temporal trends in PCBs in sediment along the lower Rhone River, France
Despite increasingly strict control of polychlorinated biphenyl (PCB) releases in France since the mid-1970s, PCB contamination of fish recently has emerged as a major concern in the lower Rhone River basin. We measured PCB concentrations in Rhone sediment to evaluate the effects of PCB releases from major urban and industrial areas, sediment...
Desmet, Marc; Mourier, Brice; Mahler, Barbara; Van Metre, Peter C.; Roux, Gwenaelle; Persat, Henri; Lefevre, Irene; Peretti, Annie; Chapron, Emmanuel; Anaelle, Simonneau; Miege, Cecile; Babut, Marc
Water-level altitudes 2012 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973-2011 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas
Most of the subsidence in the Houston–Galveston region, Texas, has occurred as a direct result of groundwater withdrawals for municipal supply, commercial and industrial use, and irrigation that depressured and dewatered the Chicot and Evangeline aquifers and caused compaction of the clay layers of the aquifer sediments. This report—...
Kasmarek, Mark C.; Johnson, Michaela R.; Ramage, Jason K.
Analysis of trends in selected streamflow statistics for the Concho River Basin, Texas, 1916-2009
The Concho River Basin is part of the upper Colorado River Basin in west-central Texas. Monotonic trends in streamflow statistics during various time intervals from 1916-2009 were analyzed to determine whether substantial changes in selected streamflow statistics have occurred within the Concho River Basin. Two types of U.S. Geological Survey...
Barbie, Dana L.; Wehmeyer, Loren L.; May, Jayne E.
Streamflow gain and loss and water quality in the upper Nueces River Basin, south-central Texas, 2008-10
The U.S. Geological Survey-in cooperation with the U.S. Army Corps of Engineers, The Nature Conservancy, the Real Edwards Conservation and Reclamation District, and the Texas Parks and Wildlife Department-investigated streamflow gain and loss and water quality in the upper Nueces River Basin, south-central Texas, specifically in the watersheds of...
Banta, J. Ryan; Lambert, Rebecca B.; Slattery, Richard N.; Ockerman, Darwin J.
Early USGS streamgage on the San Saba river in Texas
An early streamgage is used to measure water levels on San Saba River. USGS crews would visit this equipment to collect water level readings.
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Locations
Texas Water Science Center
Phone: (512) 927-3500
Fax: (512) 927-3590
Oklahoma Water Science Center
Phone: 405-810-4400
Fax: 405-843-7712
South Central Climate Adaptation Science Center
Woodward Field Office
Phone: 580-256-5031
Tulsa Field Office
Phone: 918-254-6651
Lubbock Field Office
Phone: (806) 742-3129
Fax: (806) 742-0100
Gulf Coast Branch (Houston) Office
Phone: (936) 271-5300
Fax: (936) 271-5399
Wichita Falls Field Office
Phone: (940) 397-4453
North Texas Branch (Fort Worth) Office
Phone: (817) 263-9545
Fax: (682) 316-5022
El Paso Field Office
Phone: (915) 534-6308
Fax: (915) 534-6299
San Angelo Field Office
Phone: (325) 944-4600
Fax: (325) 942-0495
Corpus Christi Field Office
Phone: (361) 825-2073
Fax: (361) 825-2025
South Texas Branch (San Antonio) Office
Phone: (210) 691-9200
Fax: (210) 691-9270