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Region 6: Arkansas-Rio Grande-Texas-Gulf

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Filter Total Items: 141
Date published: January 1, 2017
Status: Active

Interpretive Reports

The Oklahoma Water Science Center publishes water-information reports on many topics and in many formats. From this Web page, you can locate, view, download, or order scientific and technical articles and reports as well as general interest publications such as booklets, fact sheets, pamphlets, and posters resulting from the research performed by our scientists and partners.

Scientific...

Date published: January 1, 2017
Status: Active

Fact Sheets

Fact Sheets are intended as a short publication that provides for rapid publication and dissemination of facts and findings.

Date published: January 1, 2017
Status: Active

Open-File Reports

Open-file reports include unpublished manuscript reports, maps, and other material and are made available for public consultation and use. They are a nonpermanent form of publication that may be cited in other publications as sources of information.

Date published: January 1, 2017
Status: Active

Other Reports and Data Releases

The Oklahoma Water Science Center publishes water-information reports on many topics and in many formats. From this Web page, you can locate, view, download, or order scientific and technical articles and reports as well as general interest publications such as booklets, fact sheets, pamphlets, and posters resulting from the research performed by our scientists and partners.

Date published: January 1, 2017
Status: Archived

Aquifer Characteristics of Selected Aquifers in Oklahoma

Digital geospatial data sets of aquifer characteristics have been produced from existing, published paper reports for major aquifers in Oklahoma. The aquifer characteristics compiled include hydraulic conductivity, recharge, water-level elevation, and aquifer boundaries.

The individual aquifer characteristic data sets are designed especially for use with Geographic Information Systems (...

Contacts: S. Jerrod Smith
Date published: December 1, 2016
Status: Active

Riparian Ecology

Riparian ecologists at the Fort Collins Science Center study interactions among flow, channel change, and vegetation along rivers across the western United States and worldwide. Our work focuses on issues relevant to the management of water and public lands, including dam operation, climate change, invasive species, and ecological restoration. Investigations take place on a range of scales. ...

Date published: September 15, 2016

Ozark Groundwater Availability Study

The U.S. Geological Survey's Groundwater Resources Program (GWRP) is conducting an assessment of groundwater availability throughout the United States to gain a better understanding of the status of the Nation's groundwater resources and how changes in water use and climate may affect those resources. Assessments will be completed for the Nation's principal aquifer systems to help characterize...

Contacts: Brian R Clark
Date published: August 1, 2016
Status: Active

Ecology of Insect-eating Bats

Bats are the only flying mammals that are active mostly at night and occur on all continents except Antarctica. Bats are ecologically diverse, with a range of species that specialize in feeding on fruit, nectar, blood, fish, small mammals, and insects. However, of the more than 1,100 known species of bats on Earth, the majority specialize in feeding on insects. In the United States for example...

Date published: July 26, 2016
Status: Active

HDgov: Multi-agency Website for Human Dimensions of Natural Resources

HDgov is an interactive and mobile-responsive online portal to interagency, academic, and non-government resources focused on the human dimensions of natural resource management. The web portal provides easy access to tools, publications, data, and methods that help ensure that the people side of natural resources is considered throughout the entire natural resource management process. The...

Date published: July 26, 2016
Status: Active

National Park Service Visitor Spending Effects

The National Park Service (NPS) manages the Nation’s most iconic destinations that attract millions of visitors from across the Nation and around the world. Trip-related spending by NPS visitors generates and supports a considerable amount of economic activity within park gateway communities. USGS economists collaborate with the National Park Service social science program to estimate NPS...

Date published: July 21, 2016
Status: Active

Using Quantile Regression to Investigate Ecological Limiting Factors

Unexplained heterogeneity in statistical models of animal responses to their physical environment is reasonable to expect because the measured habitat resources are a constraint on—but not the sole determinant of—abundance, survival, fecundity, or fitness. The ecological understanding and reliability of management predictions based on animal habitat models can be improved by shifting focus ...

Filter Total Items: 1,614
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Year Published: 2015

Discharge, suspended sediment, and salinity in the Gulf Intracoastal Waterway and adjacent surface waters in South-Central Louisiana, 1997–2008

Discharge, suspended sediment, and salinity data collected between 1997 and 2008 indicate that the Gulf Intracoastal Waterway (GIWW) is an important distributary of river water and suspended sediments to coastal wetlands in south-central coastal Louisiana. Following natural hydraulic gradients, the GIWW passively distributes freshwater and...

Swarzenski, Christopher M.; Perrien, Scott M.
Swarzenski, C.M., and Perrien, S.M., 2015, Discharge, suspended sediment, and salinity in the Gulf Intracoastal Waterway and adjacent surface waters in south-central Louisiana, 1997–2008: U.S. Geological Survey Scientific Investigations Report 2015–5132, 21 p., http://dx.doi.org/10.3133/sir20155132.

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Year Published: 2015

Landfill leachate as a mirror of today's disposable society: Pharmaceuticals and other contaminants of emerging concern in final leachate from landfills in the conterminous United States

Final leachates (leachate after storage or treatment processes) from 22 landfills in 12 states were analyzed for 190 pharmaceuticals and other contaminants of emerging concern (CECs), which were detected in every sample, with the number of CECs ranging from 1 to 58 (median = 22). In total, 101 different CECs were detected in leachate...

Masoner, Jason R.; Kolpin, Dana W.; Furlong, Edward T.; Cozzarelli, Isabelle M.; Gray, James L.

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Year Published: 2015

Methods for estimating the magnitude and frequency of peak streamflows at ungaged sites in and near the Oklahoma Panhandle

This report presents the results of a cooperative study by the U.S. Geological Survey and the Oklahoma Department of Transportation to estimate the magnitude and frequency of peak streamflows from regional regression equations for ungaged stream sites in and near the Oklahoma Panhandle. These methods relate basin characteristics (physiographic and...

Smith, S. Jerrod; Lewis, Jason M.; Graves, Grant M.
Smith, S.J., Lewis, J.M., and Graves, G.M., 2015, Methods for estimating the magnitude and frequency of peak streamflows at ungaged sites in and near the Oklahoma Panhandle: U.S. Geological Survey Scientific Investigations Report 2015–5134, 35 p., http://dx.doi.org/10.3133/sir20155134.

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Year Published: 2015

Trace-metal and organic constituent concentrations in bed sediment at Big Base and Little Base Lakes, Little Rock Air Force Base, Arkansas—Comparisons to sediment-quality guidelines and indications for timing of exposure

This report compares concentrations for a wide range of inorganic and organic constituents in bed sediment from Big Base Lake and Little Base Lake, which are located on Little Rock Air Force Base, Arkansas, to sediment-quality guidelines. This report also compares trace-metal concentrations in a bed-sediment core sample to sediment age to...

Justus, B.G.; Hays, Phillip D.; Hart, Rheannon M.
Justus, B.G., Hays, P.D., and Hart, R.M., 2015, Trace-metal and organic constituent concentrations in bed sediment at Big Base and Little Base Lakes, Little Rock Air Force Base, Arkansas—Comparisons to sediment-quality guidelines and indications for timing of exposure: U.S. Geological Survey Scientific Investigations Report 2015–5112, 17 p., http://dx.doi.org/10.3133/sir20155112.

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Year Published: 2015

Numerical simulation of groundwater flow, resource optimization, and potential effects of prolonged drought for the Citizen Potawatomi Nation Tribal Jurisdictional Area, central Oklahoma

A hydrogeological study including two numerical groundwater-flow models was completed for the Citizen Potawatomi Nation Tribal Jurisdictional Area of central Oklahoma. One numerical groundwater-flow model, the Citizen Potawatomi Nation model, encompassed the jurisdictional area and was based on the results of a regional-scale hydrogeological study...

Ryter, Derek W.; Kunkel, Christopher D.; Peterson, Steven M.; Traylor, Jonathan P.
Ryter, D.R., Kunkel, C.D., Peterson, S.M., and Traylor, J.P., 2018, Numerical simulation of groundwater flow, resource optimization, and potential effects of prolonged drought for the Citizen Potawatomi Nation Tribal Jurisdictional Area, central Oklahoma (ver. 1.2, February 2018), U.S. Geological Survey Scientific Investigations Report 2014–5167, 27 p., https://doi.org/10.3133/sir20145167.

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Year Published: 2015

Streamflow gains and losses in the Colorado River in northwestern Burnet and southeastern San Saba Counties, Texas

In October 2012, the U.S. Geological Survey (USGS), in cooperation with the Central Texas Groundwater Conservation District, began an assessment to better understand if and where groundwater from the Ellenburger-San Saba aquifer is discharging to the Colorado River, and if and where Colorado River streamflow is recharging the Ellenburger-San Saba...

Braun, Christopher L.; Grzyb, Scott D.
Braun, C.L., and Grzyb, S.D., 2015, Streamflow gains and losses in the Colorado River in northwestern Burnet and southeastern San Saba Counties, Texas, 2012–14: U.S. Geological Survey Scientific Investigations Report 2015–5098, 32 p., http://dx.doi.org/10.3133/sir20155098.

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Year Published: 2015

Sediment and nutrient trapping as a result of a temporary Mississippi River floodplain restoration: The Morganza Spillway during the 2011 Mississippi River Flood

The 2011 Mississippi River Flood resulted in the opening of the Morganza Spillway for the second time since its construction in 1954 releasing 7.6 km3 of water through agricultural and forested lands in the Morganza Floodway and into the Atchafalaya River Basin. This volume, released over 54 days, represented 5.5% of the Mississippi...

Kroes, Daniel; Schenk, Edward R.; Noe, Gregory B.; Benthem, Adam J.

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Year Published: 2015

Updated numerical model with uncertainty assessment of 1950-56 drought conditions on brackish-water movement within the Edwards aquifer, San Antonio, Texas

In 2010, the U.S. Geological Survey, in cooperation with the San Antonio Water System, began a study to assess the brackish-water movement within the Edwards aquifer (more specifically the potential for brackish-water encroachment into wells near the interface between the freshwater and brackish-water transition zones, referred to in this report...

Brakefield, Linzy K.; White, Jeremy T.; Houston, Natalie A.; Thomas, Jonathan V.
Brakefield, L.K., White, J.T., Houston, N.A., and Thomas, J.V., 2015, Updated numerical model with uncertainty assessment of 1950–56 drought conditions on brackish-water movement within the Edwards aquifer, San Antonio, Texas: U.S. Geological Survey Scientific Investigations Report 2015–5081, 54 p., http://dx.doi.gov/10.3133/sir20155081.

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Year Published: 2015

Water-level altitudes 2015 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973-2014 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas

Most of the land-surface 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, thereby causing compaction of the aquifer sediments, mostly in the fine-grained...

Kasmarek, Mark C.; Ramage, Jason K.; Houston, Natalie A.; Johnson, Michaela R.; Schmidt, Tiffany S.
Kasmarek, M.C., Ramage, J.K., Houston, N.A., Johnson, M.R., and Schmidt, T.S., 2015, Water-level altitudes 2015 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973–2014 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas: U.S. Geological Survey Scientific Investigations Map 3337, pamphlet, 16 sheets, scale 1:100,000, http://dx.doi.org/10.3133/sim3337.

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Year Published: 2015

Simulation of groundwater flow and chloride transport in the “1,200-foot” sand with scenarios to mitigate saltwater migration in the “2,000-foot” sand in the Baton Rouge area, Louisiana

Groundwater withdrawals have caused saltwater to encroach into freshwater-bearing aquifers beneath Baton Rouge, Louisiana. The 10 aquifers beneath the Baton Rouge area, which includes East and West Baton Rouge Parishes, Pointe Coupee Parish, and East and West Feliciana Parishes, provided about 184.3 million gallons per day (Mgal/d) for public...

Heywood, Charles E.; Lovelace, John K.; Griffith, Jason M.
Heywood, C.E., Lovelace, J.K., and Griffith, J.M., 2015, Simulation of groundwater flow and chloride transport in the “1,200-foot” sand with scenarios to mitigate saltwater migration in the “2,000-foot” sand in the Baton Rouge area, Louisiana (ver. 1.1, September 2015): U.S. Geological Survey Scientific Investigations Report 2015–5083, 69 p., http://dx.doi.org/10.3133/sir20155083.

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Year Published: 2015

Water levels of the Ozark aquifer in northern Arkansas, 2013

The Ozark aquifer is the largest aquifer, both in area of outcrop and thickness, and the most important source of freshwater in the Ozark Plateaus physiographic province, supplying water to northern Arkansas, southeastern Kansas, southern Missouri, and northeastern Oklahoma. The study area includes 16 Arkansas counties lying completely or...

Schrader, Tony P.
Schrader, T.P., 2015, Water levels of the Ozark aquifer in northern Arkansas, 2013: U.S. Geological Survey Scientific Investigations Report 2015–5088, 17 p., 1 pl., http://dx.doi.org/10.3133/sir20155088.

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Year Published: 2015

Geologic and hydrostratigraphic map of the Anhalt, Fischer, and Spring Branch 7.5-minute quadrangles, Blanco, Comal, and Kendall Counties, Texas

This report describes the geology and hydrostratigraphy of the Edwards and Trinity Groups in the Anhalt, Fischer, and Spring Branch 7.5-minute quadrangles, Blanco, Comal, and Kendall Counties, Texas. The hydrostratigraphy was defined based on variations in the amount and type of porosity of each lithostratigraphic unit, which varies depending on...

Clark, Allan K.; Robert R. Morris
Clark, A.K., and Morris, R.R., 2015, Geologic and hydrostratigraphic map of the Anhalt, Fischer, and Spring Branch 7.5-minute quadrangles, Blanco, Comal, and Kendall Counties, Texas: U.S. Geological Survey Scientific Investigations Map 3333, 13 p., 1 sheet, scale 1:50,000, http://dx.dpi.org/10.3133/sim3333.

Filter Total Items: 265
March 12, 2016

USGS Measures Historic Flooding in eastern Texas

A USGS field crew takes flood measurements on the Sabine River on March 12 near Bon Weir, Texas. USGS scientists on the boat included Jeff East, Jimmy Hopkins, and Jody Avant.

Image: USGS Measures Historic Flooding in eastern Texas
March 12, 2016

USGS Measures Historic Flooding in eastern Texas

USGS scientist Jimmy Hopkins takes a streamflow measurement on the Sabine River on March 12 near Bon Weir, Texas.

A rainbow arc over a large-volume public-supply well
March 10, 2016

Rainbow and public-supply well

A large-volume public supply well in San Antonio, Texas.  This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

USGS scientist collects a groundwater-level measurement in Freeport, Texas. 
January 31, 2016

Collecting a groundwater-level measurement in Freeport, Texas

USGS hydrologist Jason Ramage collects a groundwater-level measurement using a steel tape in Freeport, Texas. 

A new interactive web application illustrates how groundwater, sediment compaction and land-elevation change are related in the Houston-Galveston region in Texas. 

Image shows a scanning electron microscope image of finchite
December 31, 2015

Scanning Electron Microscope Image of Finchite

A scanning electron microscope image of the newly discovered mineral finchite. The Denver Microbeam Lab provided this scan of finchite in order to help describe and identify the mineral as a new one. Finchite is a uranium mineral first observed in Martin County, Texas. Read more about our uranium research here

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Image shows a sample of the mineral finchite with a chair wheel for scale
December 31, 2015

Finchite Mineral

A sample of finchite, a newly discovered uranium mineral. Finchite is the yellow material on the surface of the rock. Finchite is found in the late Pleistocene sediments deposited during the Illinoian glacial stage. It was first observed in Martin County, Texas. Read more about our uranium research here

Image shows a sample of finchite with a quarter for scale
December 31, 2015

Finchite Mineral

A sample of finchite, a newly discovered uranium mineral. Finchite is the yellow material on the surface of the rock. Finchite is found in the late Pleistocene sediments deposited during the Illinoian glacial stage. It was first observed in Martin County, Texas. Read more about our uranium research here

Image shows a man examine rock layers
December 31, 2015

USGS Scientist Examining Texas Rock Layers for Finchite Minerals

USGS scientist Bradley Van Gosen examines rock layers for the newly discovered mineral finchite near Lamesa, Texas. Van Gosen was the first to recognize the existence of the new mineral, which was named for long-time USGS uranium geologist Warren Finch. Read more about our uranium research here

Image shows a dry creek bed with two men standing on the banks
December 31, 2015

USGS Scientists Seeking Finchite by the Sulfur Springs Draw in Texas

Between Lamesa and Big Spring, Texas, runs the Sulfur Spring Draw, a dry creek. It's the site of an economic calcrete-type uranium deposit, the Sulfur Springs Draw Deposit, where a new mineral was discovered in 2015. The mineral, first observed by USGS scientist Bradley Van Gosen, is a uranium-mineral named finchite after long-time USGS uranium geologist Warren Finch. Read

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Image shows a rock outcropping surrounded by desert vegation
December 31, 2015

Calcrete near Sulfur Springs Draw

A calcrete outcropping near Sulfur Springs Draw in Texas. This deposit dates to the Pliocene and Pleistocene, and hosts uranium-vanadate minerals.

Image shows a landscape of the Southern High Plains
December 31, 2015

The Southern High Plains

The Southern High Plains of New Mexico, Oklahoma, and Texas. USGS conducted a uranium assessment in this region in 2015.

Filter Total Items: 175
USGS science for a changing world logo
February 25, 2014

An increase in pumping water year-round for the next 30 years may cause groundwater levels to decrease by as much as 32 feet in parts of the Edwards-Trinity Aquifer in west Texas, according to a new study by the U.S. Geological Survey.

Image: Dead Fish Washed Ashore during Golden Alga Toxic Bloom
January 17, 2014

The causes of toxic golden algal blooms in Texas reservoirs are now better understood, according to a new study by the U.S. Geological Survey.

USGS
December 19, 2013

Secretary of the Interior Sally Jewell announced today that Interior’s South Central Climate Science Center is awarding about $1.2 million to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

USGS
November 1, 2013

USGS field crews are measuring flooding in parts of central Texas following intense rainfall.

USGS
April 9, 2013

The release of new maps covering Texas and New York continues the US Topo revisions, updates and product improvement
 

USGS
February 22, 2013

The U.S. Geological Survey has released a new report detailing changes of groundwater levels in the High Plains Aquifer. The report presents water-level change data in the aquifer in two separate periods: from 1950–the time prior to significant groundwater irrigation development–to 2011, and 2009 to 2011. 

USGS
May 25, 2012

The effects of floods resulting from dam breaches at Lakes Ellsworth and Lawtonka in southwestern Okla. were recently simulated and results are available today in a new report from the U.S. Geological Survey and the City of Lawton.

USGS
May 14, 2012

Concentrations of the nutrients nitrogen and phosphorus have decreased at several locations in two creeks that flow into Lake Eucha and Spavinaw Lake, near the City of Tulsa, Okla., according to a new U.S. Geological Survey report. 

USGS
February 1, 2012

Groundwater withdrawals for crop irrigation have increased to over 16 million acre-feet per year in the High Plains Aquifer, according to a recent U.S. Geological Survey study.

USGS science for a changing world logo
October 6, 2011

Concentrations of nitrogen, phosphorus and some pesticides have increased from 1999-2009 in parts of the North Canadian River watershed, downstream of Oklahoma City, Okla., according to a new U.S. Geological Survey report.

USGS science for a changing world logo
September 21, 2011

More than 40 years ago, release of the original geologic map of Big Bend National Park drew nature enthusiasts, scientists, historians and adventurers to this diverse and desolate terrain along the Texas/Mexico border. 

USGS science for a changing world logo
September 16, 2011

Simulated effects of withdrawing water from the Arbuckle-Simpson Aquifer in south-central Oklahoma are now available in a new U.S. Geological Survey report, done in cooperation with the Oklahoma Water Resources Board.