Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

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Filter Total Items: 1,605
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Year Published: 2014

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.
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; 2014; SIR; 2013-5210; Moring, J. Bruce; Braun, Christopher L.; Pearson, Daniel K.

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Year Published: 2014

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.

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Year Published: 2014

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
Arkansas Groundwater-Quality Network; 2014; FS; 2013-3042; Pugh, Aaron L.; Jackson, Barry T.; Miller, Roger

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Year Published: 2014

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.
Geology and hydrostratigraphy of Guadalupe River State Park and Honey Creek State Natural Area, Kendall and Comal Counties, Texas; 2014; SIM; 3303; Clark, Allan K.; Blome, Charles D.; Morris, Robert R.

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Year Published: 2014

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.
Hydrogeologic aspects of the Knippa Gap area in eastern Uvalde and western Medina counties, Texas; 2014; FS; 2014-3045; Lambert, Rebecca B.; Clark, Allan K.; Pedraza, Diana E.; Morris, Robert R.

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Year Published: 2014

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.
Hydrologic data for the Obed River watershed, Tennessee; 2014; OFR; 2014-1102; Knight, Rodney R.; Wolfe, William J.; Law, George S.

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Year Published: 2014

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
Evaluation of groundwater and surface-water interactions in the Caddo Nation Tribal Jurisdictional Area, Caddo County, Oklahoma, 2010-13; 2014; SIR; 2014-5082; Mashburn, Shana L.; Smith, S. Jerrod

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Year Published: 2014

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.
Concentrations of polycyclic aromatic hydrocarbons (PAHs) and azaarenes in runoff from coal-tar- and asphalt-sealcoated pavement; 2014; Article; Journal; Environmental Pollution; Mahler, Barbara J.; Van Metre, Peter C.; Foreman, William T.

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Year Published: 2014

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.
Mobile terrestrial light detection and ranging (T-LiDAR) survey of areas on Dauphin Island, Alabama, in the aftermath of Hurricane Isaac, 2012; 2014; DS; 855; Kimbrow, Dustin R.

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Year Published: 2014

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.
Water resources of Acadia Parish, Louisiana; 2014; FS; 2014-3043; Prakken, Larry B.; White, Vincent E.

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Year Published: 2014

Water quality of potential reference lakes in the Arkansas Valley and Ouachita Mountain ecoregions, Arkansas

This report describes a study to identify reference lakes in two lake classifications common to parts of two level III ecoregions in western Arkansas—the Arkansas Valley and Ouachita Mountains. Fifty-two lakes were considered. A screening process that relied on land-use data was followed by reconnaissance water-quality sampling, and two...

Justus, B.G.; Meredith, Bradley J.

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Year Published: 2014

Simulation of natural flows in major river basins in Alabama

The Office of Water Resources (OWR) in the Alabama Department of Economic and Community Affairs (ADECA) is charged with the assessment of the State’s water resources. This study developed a watershed model for the major river basins that are within Alabama or that cross Alabama’s borders, which serves as a planning tool for water-resource...

Hunt, Alexandria M.; García, Ana María
Simulation of natural flows in major river basins in Alabama; 2014; SIR; 2014-5021; Hunt, Alexandria M.; García, Ana María

Filter Total Items: 263
July 29, 2013

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.

Collection of a suspended-sediment sample by hydrologic technicians at U.S. Geological Survey station 08185000 Cibolo Creek.
May 25, 2013

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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Photo of two of the main spring discharge points of Comal springs.
April 11, 2013

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.

Travertine deposits near site 4 (Post Oak Falls near Tow, Texas, October 31, 2012).
October 31, 2012

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

Faulting in limestone outcrop downstream from where Greenwood Creek flows into the Colorado River.
October 31, 2012

Faulting in limestone outcrop, Greenwood Creek

Faulting in limestone outcrop downstream from where Greenwood Creek flows into the Colorado River, October 31, 2012 (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Seeps along limestone outcrop downstream from where Jim John Creek flows into the Colorado River
October 31, 2012

Seeps along limestone outcrop, Jim John Creek

Seeps along limestone outcrop downstream from where Jim John Creek flows into the Colorado River, October 31, 2012 (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Filter Total Items: 175
USGS
January 21, 1999

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.

USGS
October 22, 1998

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.

USGS
September 24, 1998

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.

USGS
April 16, 1998

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.

USGS
November 21, 1996

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.

USGS
November 21, 1995

A quick computer search of the nearly 2 million official place names in the United States shows that Texas is still the state with the most geographic features named "Turkey." From "Turkey Creek" to "Turkeyroost Mountain," Texas has 175 features named after the holiday bird, an addition of one since the last check in 1982. Arizona is second with 134 turkey names.