Oklahoma-Texas Water Science Center

Publications

Scientific reports, journal articles, or general interest publications by USGS scientists in the Texas Water Science Center are listed below. Publications span from 1898 to the present.

Filter Total Items: 1,468
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Year Published: 2014

Parameter estimation for the 4-parameter Asymmetric Exponential Power distribution by the method of L-moments using R

The implementation characteristics of two method of L-moments (MLM) algorithms for parameter estimation of the 4-parameter Asymmetric Exponential Power (AEP4) distribution are studied using the R environment for statistical computing. The objective is to validate the algorithms for general application of the AEP4 using R. An algorithm was...

Asquith, William H.
Parameter estimation for the 4-parameter Asymmetric Exponential Power distribution by the method of L-moments using R; 2014; Article; Journal; Computational Statistics and Data Analysis; Asquith, William H.

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Year Published: 2014

Response to comment on "Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement"

No abstract available.

William, E. Spencer; Mahler, Barbara; Van Metre, Peter C.
Response to comment on "Cancer risk from incidental ingestion exposures to PAHs associated with coal-tar-sealed pavement"; 2014; Article; Journal; Environmental Science & Technology; William, E. Spencer; Mahler, Barbara J.; Van Metre, Peter C.

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Year Published: 2014

Historical records, sources, and spatial trends of PCBs along the Rhône River (France).

Despite bans on PCB use since 1975 (open systems) and 1987 (closed systems), concentrations of PCBs in riverine fish in France continue to exceed regulatory levels. We present historical records of PCB concentrations in sediment cores from eight sites on the Rhône River, from Lake Geneva to the Mediterranean Sea. Maximum PCB concentrations (sum of...

Mourier, Brice; Desmet, Marc; Van Metre, Peter C.; Mahler, Barbara; Perrodin, Yves; Roux, Gwenaelle; Bedell, Jean-Phillippe; Lefebvre, Lynn W.; Babut, Marc

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Year Published: 2013

PAH concentrations in lake sediment decline following ban on coal-tar-based pavement sealants in Austin, Texas

Recent studies have concluded that coal-tar-based pavement sealants are a major source of polycyclic aromatic hydrocarbons (PAHs) in urban settings in large parts of the United States. In 2006, Austin, TX, became the first jurisdiction in the U.S. to ban the use of coal-tar sealants. We evaluated the effect of Austin’s ban by analyzing PAHs in...

Van Metre, Peter C.; Mahler, Barbara
PAH concentrations in lake sediment decline following ban on coal-tar-based pavement sealants in Austin, Texas; 2013; Article; Journal; Environmental science and technology; Van Metre, Peter C.; Mahler, Barbara J.

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Year Published: 2013

Spatio-temporal spawning and larval dynamics of a zebra mussel (Dreissena polymorpha) population in a North Texas Reservoir: implications for invasions in the southern United States

Zebra mussels were first observed in Texas in 2009 in a reservoir (Lake Texoma) on the Texas-Oklahoma border. In 2012, an established population was found in a near-by reservoir, Ray Roberts Lake, and in June 2013, settled mussels were detected in a third north Texas reservoir, Lake Lewisville. An established population was detected in Belton Lake...

Churchill, Christopher John
Spatio-temporal spawning and larval dynamics of a zebra mussel (Dreissena polymorpha) population in a North Texas Reservoir: implications for invasions in the southern United States; 2013; Article; Journal; Aquatic Invasions; Churchill, Christopher John

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Year Published: 2013

A preliminary assessment of streamflow gains and losses for selected stream reaches in the lower Guadalupe River Basin, Texas, 2010-12

The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers–Fort Worth District, the Texas Water Development Board, the Guadalupe-Blanco River Authority, and the Edwards Aquifer Authority, investigated streamflow gains and losses in the lower Guadalupe River Basin during four selected base-flow periods in March 2010,...

Wehmeyer, Loren L.; Winters, Karl E.; Ockerman, Darwin J.
A preliminary assessment of streamflow gains and losses for selected stream reaches in the lower Guadalupe River Basin, Texas, 2010-12; 2013; SIR; 2013-5209; Wehmeyer, Loren L.; Winters, Karl E.; Ockerman, Darwin J.

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Year Published: 2013

Detections, concentrations, and distributional patterns of compounds of emerging concern in the San Antonio River Basin, Texas, 2011-12

During 2011–12, the U.S. Geological Survey, in cooperation with the San Antonio River Authority, evaluated detections, concentrations, and distributional patterns of selected compounds of emerging concern (hereinafter referred to as “CECs”) from water-quality samples (hereinafter referred to as “samples”) collected at...

Opsahl, Stephen P.; Lambert, Rebecca B.
Detections, concentrations, and distributional patterns of compounds of emerging concern in the San Antonio River Basin, Texas, 2011-12; 2013; SIR; 2013-5200; Opsahl, Stephen P.; Lambert, Rebecca B.

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Year Published: 2013

Origin and characteristics of discharge at San Marcos Springs, south-central Texas

The Edwards aquifer in south-central Texas is one of the most productive aquifers in the Nation and is the primary source of water for the rapidly growing San Antonio area. Springs issuing from the Edwards aquifer provide habitat for several threatened and endangered species, serve as locations for recreational activities, and supply downstream...

Musgrove, MaryLynn; Crow, Cassi L.
Origin and characteristics of discharge at San Marcos Springs, south-central Texas; 2013; FS; 2013-3080; Musgrove, Marylynn; Crow, Cassi L.

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Year Published: 2013

Hydrogeology, distribution, and volume of saline groundwater in the southern midcontinent and adjacent areas of the United States

The hydrogeology, distribution, and volume of saline water in 22 aquifers in the southern midcontinent of the United States were evaluated to provide information about saline groundwater resources that may be used to reduce dependency on freshwater resources. Those aquifers underlie six States in the southern midcontinent—Arkansas, Kansas,...

Osborn, Noël I.; Smith, S. Jerrod; Seger, Christian H.
Hydrogeology, distribution, and volume of saline groundwater in the southern midcontinent and adjacent areas of the United States; 2013; SIR; 2013-5017; Osborn, Noël I.; Smith, S. Jerrod; Seger, Christian H.

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Year Published: 2013

Borehole geophysical, fluid, and hydraulic properties within and near the freshwater/saline-water transition zone, San Antonio segment of the Edwards aquifer, south-central Texas, 2010-11

The freshwater zone of the San Antonio segment of the Edwards aquifer is used by residents of San Antonio and numerous other rapidly growing communities in south-central Texas as their primary water supply source. This freshwater zone is bounded to the south and southeast by a saline-water zone with an intermediate zone transitioning from...

Thomas, Jonathan V.; Stanton, Gregory P.
Borehole geophysical, fluid, and hydraulic properties within and near the freshwater/saline-water transition zone, San Antonio segment of the Edwards aquifer, south-central Texas, 2010-11; 2013; FS; 2013-3078; Thomas, Jonathan V.; Stanton, Gregory P.

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Year Published: 2013

Geospatial compilation of historical water-level altitudes in the Chicot and Evangeline aquifers 1977-2013 and Jasper aquifer 2000-13 in the Gulf Coast aquifer system, Houston-Galveston Region, Texas

The U.S. Geological Survey (USGS) 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 has produced a series of annual reports depicting groundwater-level altitudes in the Chicot, Evangeline,...

Johnson, Michaela R.; Ellis, Robert H.H.
Geospatial compilation of historical water-level altitudes in the Chicot and Evangeline aquifers 1977-2013 and Jasper aquifer 2000-13 in the Gulf Coast aquifer system, Houston-Galveston Region, Texas; 2013; DS; 793; Johnson, Michaela R.; Ellis, Robert H. H.

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Year Published: 2013

Geologic framework, structure, and hydrogeologic characteristics 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 was postulated to channel or restrict flow in the Edwards aquifer in eastern Uvalde County, and its existence was based on a series of numerical simulations of groundwater flow in the aquifer. To better understand the function...

Clark, Allan K.; Pedraza, Diana E.; Morris, Robert R.
Geologic framework, structure, and hydrogeologic characteristics of the Knippa Gap area in eastern Uvalde and western Medina Counties, Texas; 2013; SIR; 2013-5149; Clark, Allan K.; Pedraza, Diana E.; Morris, Robert R.