Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

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Year Published: 2013

Groundwater quality and the relation between pH values and occurrence of trace elements and radionuclides in water samples collected from private wells in part of the Kickapoo Tribe of Oklahoma Jurisdictional Area, central Oklahoma, 2011

From 1999 to 2007, the Indian Health Service reported that gross alpha-particle activities and concentrations of uranium exceeded the Maximum Contaminant Levels for public drinking-water supplies in water samples from six private wells and two test wells in a rural residential neighborhood in the Kickapoo Tribe of Oklahoma Jurisdictional Area, in...

Becker, Carol J.
Groundwater quality and the relation between pH values and occurrence of trace elements and radionuclides in water samples collected from private wells in part of the Kickapoo Tribe of Oklahoma Jurisdictional Area, central Oklahoma, 2011; 2013; SIR; 2012-5253; Becker, Carol J.

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Year Published: 2013

Empirical flow parameters : a tool for hydraulic model validity

The objectives of this project were (1) To determine and present from existing data in Texas, relations between observed stream flow, topographic slope, mean section velocity, and other hydraulic factors, to produce charts such as Figure 1 and to produce empirical distributions of the various flow parameters to provide a methodology to "check if...

Asquith, William H.; Burley, Thomas E.; Cleveland, Theodore G.
Asquith, W.H., and Burley, T.E., 2013, Evaluation of main-channel slope and proximal slope for statistical regionalization of U.S. Geological Survey discharge measurements associated with direct- runoff conditions in Texas, in Cleveland, T.G., Liu, X., Sharif, H.O., and Strom, K.B., 2013, Statistical properties and regional analysis of empirical flow parameters in Texas as obtained from U.S. Geological Survey discharge measurement databases—Tools for assessment of hydraulic models: Texas Department of Transportation Research Report 0--6654--1, chapter A, pp. 129–145

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Year Published: 2013

Generalized additive regression models of discharge and mean velocity associated with direct-runoff conditions in Texas: Utility of the U.S. Geological Survey discharge measurement database

A database containing more than 17,700 discharge values and ancillary hydraulic properties was assembled from summaries of discharge measurement records for 424 U.S. Geological Survey streamflow-gauging stations (stream gauges) in Texas. Each discharge exceeds the 90th-percentile daily mean streamflow as determined by period-of-record, stream-...

Asquith, William H.; Herrmann, George R.; Cleveland, Theodore G.

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Year Published: 2013

An 80-year record of sediment quality in the lower Mississippi River

In 1937, the US Army Corps of Engineers cut through the "neck" of a large meander on the lower Mississippi River (below the confluence with the Ohio River) forming the Caulk Neck cutoff and creating Lake Whittington, a 26-km long oxbow lake, in northern Mississippi. Since 1938, seasonal flooding and a boat channel connecting the lake with the...

Van Metre, Peter C.; Horowitz, Arthur J.
An 80-year record of sediment quality in the lower Mississippi River; 2013; Article; Journal; Hydrological Processes; Van Metre, Peter C.; Horowitz, Arthur J.

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Year Published: 2012

Predicting ecological flow regime at ungaged sites: A comparison of methods

Nineteen ecologically relevant streamflow characteristics were estimated using published rainfall–runoff and regional regression models for six sites with observed daily streamflow records in Kentucky. The regional regression model produced median estimates closer to the observed median for all but two characteristics. The variability of...

Murphy, Jennifer C.; Knight, Rodney R.; Wolfe, William J.; Gain, W. Scott

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Year Published: 2012

GeoChip-based analysis of microbial functional gene diversity in a landfill leachate-contaminated aquifer

The functional gene diversity and structure of microbial communities in a shallow landfill leachate-contaminated aquifer were assessed using a comprehensive functional gene array (GeoChip 3.0). Water samples were obtained from eight wells at the same aquifer depth immediately below a municipal landfill or along the predominant downgradient...

Lu, Zhenmei; He, Zhili; Parisi, Victoria A.; Kang, Sanghoon; Deng, Ye; Van Nostrand, Joy D.; Masoner, Jason R.; Cozzarelli, Isabelle M.; Suflita, Joseph M.; Zhou, Jizhong
GeoChip-based analysis of microbial functional gene diversity in a landfill leachate-contaminated aquifer; 2012; Article; Journal; Environmental Science & Technology; Lu, Zhenmei; He, Zhili; Parisi, Victoria A.; Kang, Sanghoon; Deng, Ye; Van Nostrand, Joy D.; Masoner, Jason R.; Cozzarelli, Isabelle M.; Suflita, Joseph M.; Zhou, Jizhong

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Year Published: 2012

Shallow groundwater quality and geochemistry in the Fayetteville Shale gas-production area, north-central Arkansas, 2011

The Mississippian Fayetteville Shale serves as an unconventional gas reservoir across north-central Arkansas, ranging in thickness from approximately 50 to 550 feet and varying in depth from approximately 1,500 to 6,500 feet below the ground surface. Primary permeability in the Fayetteville Shale is severely limited, and successful extraction of...

Kresse, Timothy M.; Warner, Nathaniel R.; Hays, Phillip D.; Down, Adrian; Vengosh, Avner; Jackson, Robert B.
Shallow groundwater quality and geochemistry in the Fayetteville Shale gas-production area, north-central Arkansas, 2011; 2012; SIR; 2012-5273; Kresse, Timothy M.; Warner, Nathaniel R.; Hays, Phillip D.; Down, Adrian; Vengosh, Avner; Jackson, Robert B.

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Year Published: 2012

Emerging contaminants at a closed and an operating landfill in Oklahoma

Landfills are the final depositories for a wide range of solid waste from both residential and commercial sources, and therefore have the potential to produce leachate containing many organic compounds found in consumer products such as pharmaceuticals, plasticizers, disinfectants, cleaning agents, fire retardants, flavorings, and preservatives,...

Andrews, William J.; Masoner, Jason R.; Cozzarelli, Isabelle M.

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Year Published: 2012

Borehole geophysical, fluid, and hydraulic properties within and surrounding 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.; Lambert, Rebecca B.
Borehole geophysical, fluid, and hydraulic properties within and surrounding the freshwater/saline-water transition zone, San Antonio segment of the Edwards aquifer, south-central Texas, 2010-11; 2012; SIR; 2012-5285; Thomas, Jonathan V.; Stanton, Gregory P.; Lambert, Rebecca B.

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Year Published: 2012

Surface-water quality in the upper San Antonio River Basin, Bexar County, Texas, 1992-98

The potential effects of chemicals in rivers and streams on human health or the ecology have long been a source of concern to water managers. Chemicals in rivers may result from natural or anthropogenic sources (such as industrial or residential practices) which are commonly associated with urbanized watersheds. The U.S. Geological Survey, in...

Banta, J. Ryan; Slattery, Richard N.; Crow, Cassi L.
Surface-water quality in the upper San Antonio River Basin, Bexar County, Texas, 1992-98; 2012; DS; 738; Banta, J. Ryan; Slattery, Richard N.; Crow, Cassi L.

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Year Published: 2012

Groundwater levels and water-quality observations pertaining to the Austin Group, Bexar County, Texas, 2009-11

The U.S. Geological Survey, in cooperation with the San Antonio Water System, examined groundwater-level altitudes (groundwater levels) and water-quality data pertaining to the Austin Group in Bexar County, Texas, during 2009–11. Hydrologic data collected included daily mean groundwater levels collected at seven sites in the study area....

Banta, J.R.; Clark, Allan K.
Groundwater levels and water-quality observations pertaining to the Austin Group, Bexar County, Texas, 2009-11; 2012; SIR; 2012-5278; Banta, J. R.; Clark, A. K.

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Year Published: 2012

Quality of surface-water runoff in selected streams in the San Antonio segment of the Edwards aquifer recharge zone, Bexar County, Texas, 1997-2012

During 1997–2012, the U.S. Geological Survey, in cooperation with the San Antonio Water System, collected and analyzed water-quality constituents in surface-water runoff from five ephemeral stream sites near San Antonio in northern Bexar County, Texas. The data were collected to assess the quality of surface water that recharges the Edwards...

Opsahl, Stephen P.
Quality of surface-water runoff in selected streams in the San Antonio segment of the Edwards aquifer recharge zone, Bexar County, Texas, 1997-2012; 2012; DS; 740; Opsahl, Stephen P.