Unified Interior Regions
Region 6: Arkansas-Rio Grande-Texas-Gulf
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Reach-scale comparison of habitat and mollusk assemblages for select sites in the Clinch River with regional context
Several hypotheses, including habitat degradation and variation in fluvial geomorphology, have been posed to explain extreme spatial and temporal variation in Clinch River mollusk assemblages. We examined associations between mollusk assemblage metrics (richness, abundance, recruitment) and physical habitat (geomorphology, streambed composition,...
Ostby, Brett J. K.; Krstolic, Jennifer L.; Johnson, Gregory C.
Effects of hydrologic modifications on salinity and formation of hypoxia in the Mississippi River-Gulf Outlet and adjacent waterways, southeastern Louisiana, 2008 to 2012
The Mississippi River-Gulf Outlet (MRGO) was constructed between 1958 and 1968 to provide a safer and shorter route between the Gulf of Mexico and the Port of New Orleans for ocean-going vessels. In 2006, the U.S. Congress directed the U.S. Army Corps of Engineers (USACE) to develop and implement a plan to deauthorize a portion of the MRGO ship...
Swarzenski, Christopher M.; Mize, Scott V.
Mesohabitats, fish assemblage composition, and mesohabitat use of the Rio Grande silvery minnow over a range of seasonal flow regimes in the Rio Grande/Rio Bravo del Norte, in and near Big Bend National Park, Texas, 2010-11
In 2010–11, the U.S. Geological Survey (USGS), in cooperation with the U.S. Fish and Wildlife Service, evaluated the physical characteristics and fish assemblage composition of mapped river mesohabitats at four sites on the Rio Grande/Rio Bravo del Norte (hereinafter Rio Grande) in and near Big Bend National Park, Texas. The four sites used...
Moring, J. Bruce; Braun, Christopher L.; Pearson, Daniel K. Influences of water and sediment quality and hydrologic processes on mussels in the Clinch River
Segments of the Clinch River in Virginia have experienced declining freshwater mussel populations during the past 40 years, while other segments of the river continue to support some of the richest mussel communities in the country. The close proximity of these contrasting reaches provides a study area where differences in climate, hydrology...
Johnson, Gregory C.; Krstolic, Jennifer L.; Ostby, Brett J.K.
Arkansas Groundwater-Quality Network
Arkansas is the fourth largest user of groundwater in the United States, where groundwater accounts for two-thirds of the total water use. Groundwater use in the State increased by 510 percent between 1965 and 2005 (Holland, 2007). The Arkansas Groundwater-Quality Network is a Web map interface (http://ar.water.usgs.gov/wqx) that provides rapid...
Pugh, Aaron L.; Jackson, Barry T.; Miller, Roger
Geology and hydrostratigraphy of Guadalupe River State Park and Honey Creek State Natural Area, Kendall and Comal Counties, Texas
Hydrogeologic mapping and descriptions of the lithostratigraphy and hydrostratigraphy of Guadalupe River State Park and Honey Creek State Natural Area, Kendall and Comal Counties, Texas, are presented in this first detailed 1:24,000 geologic map, along with proposed names and descriptions of the hydrostratigraphic units in the study area....
Clark, Allan K.; Blome, Charles D.; Morris, Robert R.
Hydrogeologic aspects of the Knippa Gap area in eastern Uvalde and western Medina counties, Texas
The Edwards aquifer is the primary source of potable water for the San Antonio area in south-central Texas. The Knippa Gap area is a structural low (trough) postulated to channel or restrict flow in the Edwards aquifer in eastern Uvalde and western Medina Counties, Tex. To better understand the function of the Knippa Gap, the U.S. Geological...
Lambert, Rebecca B.; Clark, Allan K.; Pedraza, Diana E.; Morris, Robert R.
Hydrologic data for the Obed River watershed, Tennessee
The Obed River watershed drains a 520-square-mile area of the Cumberland Plateau physiographic region in the Tennessee River basin. The watershed is underlain by conglomerate, sandstone, and shale of Pennsylvanian age, which overlie Mississippian-age limestone. The larger creeks and rivers of the Obed River system have eroded gorges through the...
Knight, Rodney R.; Wolfe, William J.; Law, George S.
Evaluation of groundwater and surface-water interactions in the Caddo Nation Tribal Jurisdictional Area, Caddo County, Oklahoma, 2010-13
Streamflows, springs, and wetlands are important natural and cultural resources to the Caddo Nation. Consequently, the Caddo Nation is concerned about the vulnerability of the Rush Springs aquifer to overdrafting and whether the aquifer will continue to be a viable source of water to tribal members and other local residents in the future. Interest...
Mashburn, Shana L.; Smith, S. Jerrod Concentrations of polycyclic aromatic hydrocarbons (PAHs) and azaarenes in runoff from coal-tar- and asphalt-sealcoated pavement
Coal-tar-based sealcoat, used extensively on parking lots and driveways in North America, is a potent source of PAHs. We investigated how concentrations and assemblages of PAHs and azaarenes in runoff from pavement newly sealed with coal-tar-based (CT) or asphalt-based (AS) sealcoat changed over time. Samples of simulated runoff were collected...
Mahler, Barbara; Van Metre, Peter C.; Foreman, William T.
Mobile terrestrial light detection and ranging (T-LiDAR) survey of areas on Dauphin Island, Alabama, in the aftermath of Hurricane Isaac, 2012
Topographic survey data of areas on Dauphin Island on the Alabama coast were collected using a truck-mounted mobile terrestrial light detection and ranging system. This system is composed of a high frequency laser scanner in conjunction with an inertial measurement unit and a position and orientation computer to produce highly accurate topographic...
Kimbrow, Dustin R.
Water resources of Acadia Parish, Louisiana
Information concerning the availability, use, and quality of water in Acadia Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. Information on the availability, past and...
Prakken, Larry B.; White, Vincent E.
USGS Responds to Near Record Flooding in Central Texas
USGS scientist Mark Warzecha makes a streamflow measurement with Acoustic Doppler Current Profiler downstream of a USGS streamgage station on the Blanco River at Interstate 35. The streamgage is not currently accessible, so a measurement is being made at the safest downstream location.
Water-level Change in the High Plains Aquifer System
In 1986, Congress directed the USGS to regularly report groundwater-level changes in the High Plains aquifer system. To comply with this directive, the USGS compares water levels measured every two years. By measuring water levels across the entire aquifer in one year, measurements made two years later enable calculation of changes over time. Measured water levels from
Climate, Water Quality, Toxic Blooms of Golden Alga in Texas
This webinar, Climate, Water Quality, Toxic Blooms of Golden Alga in Texas, was presented by Reynaldo Patino from the USGS Texas Cooperative Fish and Wildlife Research Unit.
Collecting suspended-sediment sample, Cibolo Ck., Tex.
Collection of a suspended-sediment sample by hydrologic technicians at U.S. Geological Survey station 08185000 Cibolo Creek at Selma, Texas, on May 25, 2013. The technician in the foreground is using a smart phone to check peak discharge at the site during the flood by accessing http://m.waterdata.usgs.gov (
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Two of the main spring discharge points of Comal springs, Texas
Two of the main spring discharge points of Comal springs.
A new website now provides important information about streamflow in the Comal and San Marcos Rivers and springflow at Comal and San Marcos Springs.
Drought conditions at Canton Lake, Oklahoma.
Drought conditions at Canton Lake, Oklahoma.
Drought conditions at Lone Chimney Lake, Oklahoma.
Drought conditions at Lake Lone Chimney, Pawnee County, Oklahoma.
North Fork Red River below Lake Altus, HWY 44
North Fork Red River below Lake Altus, HWY 44.
Travertine deposits, Post Oak Falls near Tow, Texas
Travertine deposits near site 4 (Post Oak Falls near Tow, Texas, October 31, 2012) (photograph by Jennifer Wilson, U.S. Geological Survey).
SIR 2015–5098
Wildfires have long played a key role in structuring ecosystems and plant communities in the southeastern United States. From the coastal prairie of Texas and Louisiana to the marshes and pinelands of Florida, many native species have adapted to a natural regime of frequent wildfire caused by lightning strikes.
Scientists from the U.S. Geological Survey (USGS) in Texas are working with local, state and federal officials to provide near real-time flood data in the wake of Hurricane Bret to emergency managers and others who then use the data to make decisions on evacuations and water management.
Nutrients from the Mississippi River Basin are believed to be responsible, at least in part, for the large hypoxic zone that develops on the Louisiana-Texas shelf in the Gulf of Mexico each summer, according to Don Goolsby, a hydrologist with the U.S.Geological Survey in Denver, Colo.
After enduring a summer full of sweltering temperatures, tropical storms, and floods, 20 inches of rain suddenly fell in areas of south central and eastern Texas this past week causing weather turmoil once again. Flooding from these rains has teams of scientists from the U.S. Geological Survey (USGS) mobilized to take water level and discharge measurements at rain-swollen streams.
U.S. Geological Survey (USGS) scientist, Katherine Kendall, will be awarded the National Park Service’s Natural Resource Research Award on September 28, at the Service’s annual Natural Resources Stewardship and Science Meeting in Austin, Texas.
A 5-year study of water quality in the Rio Grande Valley, from its headwaters in Colorado to near El Paso, Texas, has been completed by the U.S. Geological Survey (USGS). The study focused on ground water in the flood plain of the Rio Grande and surface water in the Rio Grande and selected tributaries.
The gasoline additive MTBE (methyl tert-butyl ether) was detected in some urban stormwater samples collected in 16 cities and metropolitan areas by the U.S. Geological Survey, but all detections of MTBE were less than the lower limit of the U.S. Environmental Protection Agency’s draft lifetime health advisory for drinking water.
Contacts
Locations
South Central Climate Adaptation Science Center
Oklahoma-Texas Water Science Center – Austin, TX Office
Phone: (512) 927-3500
Fax: (512) 927-3590
Oklahoma-Texas Water Science Center – Oklahoma City, OK Office
Phone: 405-810-4400
Fax: 405-843-7712
Oklahoma-Texas Water Science Center – Tulsa, OK Office
Phone: 918-254-6651
Oklahoma-Texas Water Science Center – Woodward, OK Office
Phone: 580-256-5031
Oklahoma-Texas Water Science Center – Lubbock, TX Office
Phone: (806) 993-0229
Fax: (806) 993-0235
Oklahoma-Texas Water Science Center – Conroe, TX Office
Phone: (936) 271-5300
Fax: (936) 271-5399
Oklahoma-Texas Water Science Center – Wichita Falls, TX Office
Phone: (940) 397-4453
Oklahoma-Texas Water Science Center – Fort Worth, TX Office
Phone: (817) 263-9545
Fax: (682) 316-5022
Oklahoma-Texas Water Science Center – El Paso, TX Office
Phone: (915) 534-6308
Fax: (915) 534-6299
Oklahoma-Texas Water Science Center – San Angelo, TX Office
Phone: (325) 944-4600
Fax: (325) 942-0495
Oklahoma-Texas Water Science Center – Corpus Christi, TX Office
Phone: (361) 825-2073
Fax: (361) 825-2025
Oklahoma-Texas Water Science Center – San Antonio, TX Office
Phone: (210) 691-9200
Fax: (210) 691-9270