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Region 6: Arkansas-Rio Grande-Texas-Gulf

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We conduct impartial, multi- and interdisciplinary research and monitoring to address a broad range of scienctific issues that affect the Arkansas-Rio Grande-Texas-Gulf Region.

News

Date published: August 26, 2019

New Tools for Flood Preparedness Available for Medina River Near Bandera, Texas

New tools for flood preparedness are now available for the Medina River near Bandera, Texas, from the U.S. Geological Survey, the Bandera County River Authority and Groundwater District, and the Texas Water Development Board.

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San Antonio River
Date Published: September 23, 2019
Status: Active

Urban Waters Federal Partnership - Edwards Aquifer Recharge in a Developing Landscape

San Antonio Texas consistently ranks as one of the fastest growing large cities in the United States. Urban development can affect groundwater quality as trees and open space are replaced by buildings and roads, increasing the amount of urban runoff draining directly into the Edwards aquifer. A network of sophisticated surface water and groundwater monitoring sites is being used to help...

Screenshot: Coastal Change Hazards Portal - Hurricane Dorian - Sept. 5
Date Published: September 4, 2019
Status: Active

Real-Time Storm Response

Coastal change forecasts and pre- and post-storm photos documenting coastal change for landfalling storms. Currently responding to Hurricane Dorian.

Contacts: Kara Doran
USGS science for a changing world
Date Published: July 8, 2019
Status: Active

Concealed Rare Earth Element (REE) Terranes in the Southern Basin and Range Geologic Province

The project is developing an understanding of the types, sizes, and spatial distribution of rare earth element (REE) related deposits in the southern Basin and Range geologic province to help ensure the availability of rare earth elements to the U.S.

Contacts: Mark Bultman
Mottled duck
Date Published: March 26, 2019
Status: Active

Identification of Hydrologic Controls on Coastal Spartina patens Marshes and Optimal Hydrological Conditions for Sustainable Mottled Duck Habitat

Mottled ducks rely on the coastal marshes of the Texas Chenier Plain, which are considered among the most critically endangered habitats in the United States. USGS scientists are evaluating what might be contributing to the degradation of high-quality mottled duck habitat to better understand the causes of habitat loss and subsequently mitigate those losses.

2017 Midwest Spring Floods
Date Published: February 26, 2019
Status: Completed

2017 Midwest Spring Floods

Learn more about USGS flood activities related to the 2017 Midwest Spring Floods that occurred across large portions of Missouri, Illinois, Indiana, Ohio, Oklahoma, and Arkansas in late April and early May, 2017.

March 2016 14-day precipitation map
Date Published: February 26, 2019
Status: Completed

2016 Southern Spring Floods

Learn more about USGS flood activities related to the 2016 Southern Spring Floods. These floods were caused by significant amounts of tropical moisture that was funneled through a narrow zone across East Texas, Louisiana, Arkansas, and Mississippi, creating severe flood conditions.

Measuring floodwater
Date Published: February 26, 2019
Status: Archived

Continuous Water-Quality Monitoring During December 2015-January 2016 Flood Events

During the late December 2015-early January 2016 storm event, two sewage-treatment plants and a drinking-water plant in Missouri were inundated by water and failed, contributing untreated sewage to the floodwaters. The USGS collected water-quality samplesat key locations in the Mississippi and Missouri River Basins and continued to sample the flood surge as it moved down the Mississippi River...

WY2015 cumulative streamflow graph for Elkhorn Creek near Frankfort KY
Date Published: February 26, 2019
Status: Completed

Summer 2015 Central Floods

Learn more about USGS flood activities related to the Summer 2015 Central Floods that occured when heavy rains caused flooding in four states in the central U.S.

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A graphic showing how the Texas Water Dashboard is used.
December 18, 2019

The Texas Water Dashboard presents USGS real-time stream, lake and reservoir, precipitation and groundwater data for more than 850 USGS real-time observation stations in Texas.

USGS
September 26, 2019

Groundwater age distribution and susceptibility to natural and anthropogenic contaminants were assessed for selected principal aquifers of the Western United States: the Central Valley aquifer system (CVAL), the Basin and Range basin-fill aquifers (BNRF), the Rio Grande aquifer system (RIOG), the High Plains aquifer (HPAQ), the Columbia Plateau basaltic-rock aquifers (

USGS
March 14, 2019

The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates

USGS
January 1, 2019

Regional grid files and 3D voxel models were used to study crustal architecture beneath the Southern Midcontinent (USA) by McCafferty and others (2019). The study covered a rectangular, multi-state area of 924 by 924 kilometers centered on Missouri, and a corresponding volume extending from the topographic surface to a depth of 50 kilometers below sea level. The grid files consist of

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GRDA bathymetry
September 22, 2017

View topographic and bathymetric contour data and query water depths for the Neosho River, Spring River and Elk River, in northeastern Oklahoma.

Funding partners: Grand River Dam Authority

Miami Inundation Pilot Viewer
January 1, 2017

View topographic and bathymetric contour data and simulate Neosho River inundation areas for selected (and real-time) water-surface elevations at Grand Lake and the Neosho River streamgage near Commerce

Funding partners: U.S. Army Corps of Engineers, Grand River Dam Authority, and Oklahoma Department of Wildlife 

Shawnee Reservoir Data Viewer
January 1, 2017

View topographic and bathymetric contour data and simulate Shawnee (Twin Lakes) Reservoir inundation areas for selected (and real-time) water-surface elevations.

Funding partners: City of Shawnee

Hurricane Louisiana Coast
September 14, 2016

June 1 marks the beginning of hurricane season. Should storms arrive on the Louisiana coast, the people in coastal communities across the State, along with many Federal, State, and local agencies will need to know how the storms are affecting the coastal and low-lying areas.The USGS maintains an extensive network of coastal gages that provides critical time-sensitive water level.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Grand Lake Image
March 3, 2016

Grand Lake Data Viewer - View topographic and bathymetric contour data and simulate Grand Lake inundation areas for selected water-surface elevations.

Funding partners: U.S. Army Corps of Engineers, Grand River Dam Authority, and Oklahoma Department of Wildlife Conservation

 

dbflood-image
September 1, 2015

Flood Database for Oklahoma - Obtain records of historical flood depth and discharge measurements as well as flood-related news clippings.

Funding partners: Oklahoma Department of Transportation

StreamStats in Oklahoma
January 1, 2015

Delineate custom drainage basins, compute basin characteristics, and estimate streamflow statistics.

Funding partners: Oklahoma Department of Transportation and Oklahoma Water Resources Board

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Year Published: 2020

Multi-region assessment of pharmaceutical exposures and predicted effects in USA wadeable urban-gradient streams

Human-use pharmaceuticals in urban streams link aquatic-ecosystem health to human health. Pharmaceutical mixtures have been widely reported in larger streams due to historical emphasis on wastewater-treatment plant (WWTP) sources, with limited investigation of pharmaceutical exposures and potential effects in smaller headwater streams. In 2014–...

Bradley, Paul; Journey, Celeste; Button, Daniel T.; Carlisle, Daren M.; Huffman, B.J.; Qi, Sharon L.; Romanok, Kristin; Van Metre, Peter C.

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Year Published: 2020

Precipitation, temperature, groundwater-level elevation, streamflow, and potential flood storage trends within the Brazos, Colorado, Big Cypress, Guadalupe, Neches, Sulphur, and Trinity River Basins in Texas Through 2017

The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers (USACE), analyzed streamflow trends and streamflow-related variables through 2017 in seven important water-supply basins to provide information that can help water managers with the USACE and river authorities make future water management decisions. The primary...

Harwell, Glenn R.; McDowell, Jeremy; Gunn-Rosas, Cathina; Garrett, Brett
Harwell, G.R., McDowell, J.S., Gunn, C.L., and Garrett, B.S., 2020, Precipitation, temperature, groundwater-level elevation, streamflow, and potential flood storage trends within the Brazos, Colorado, Big Cypress, Guadalupe, Neches, Sulphur, and Trinity River Basins in Texas through 2017: U.S. Geological Survey Scientific Investigations Report 2019–5137, 94 p., https://doi.org/10.3133/sir20195137.

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Year Published: 2019

Methods for estimating the magnitude and frequency of peak streamflows for unregulated streams in Oklahoma developed by using streamflow data through 2017

The U.S. Geological Survey (USGS), in cooperation with the Oklahoma Department of Transportation, updated peak-streamflow regression equations for estimating flows with annual exceedance probabilities from 50 to 0.2 percent for the State of Oklahoma. These regression equations incorporate basin characteristics to estimate peak-streamflow magnitude...

Lewis, Jason M.; Hunter, Shelby L.; Labriola, Laura G.
Lewis, J.M., Hunter, S.L., and Labriola, L.G., 2019, Methods for estimating the magnitude and frequency of peak streamflows for unregulated streams in Oklahoma developed by using streamflow data through 2017: U.S. Geological Survey Scientific Investigations Report 2019–5143, 39 p., https://doi.org/10.3133/sir20195143.

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Year Published: 2019

Report of the River Master of the Delaware River for the period December 1, 2009–November 30, 2010

A Decree of the Supreme Court of the United States, entered June 7, 1954, established the position of Delaware River Master within the U.S. Geological Survey. In addition, the Decree authorizes diversion of water from the Delaware River Basin and requires compensating releases from certain reservoirs, owned by New York City, to be made under the...

Russell, Kendra L.; Ockerman, Darwin; Krejmas, Bruce E.; Paulachok, Gary N.; Mason,, Robert R.
Russell, K.L., Ockerman, D., Krejmas, B.E., Paulachok, G.N., and Mason, R.R., Jr., 2019, Report of the River Master of the Delaware River for the period December 1, 2009–November 30, 2010: U.S. Geological Survey Open-File Report 2019–1093, 128 p., https://doi.org/10.3133/ofr20191093.

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Year Published: 2019

Pecos River Basin salinity assessment, Santa Rosa Lake, New Mexico, to the confluence of the Pecos River and the Rio Grande, Texas, 2015

The elevated salinity of the Pecos River throughout much of its length is of paramount concern to water users and water managers. Dissolved-solids concentrations in the Pecos River exceed 3,000 milligrams per liter in many of its reaches in the study area, from Santa Rosa Lake, New Mexico, to the confluence of the Pecos River with the Rio Grande,...

Houston, Natalie A.; Thomas, Jonathan V.; Ging, Patricia B.; Teeple, Andrew P.; Pedraza, Diana E.; Wallace, David S.
Houston, N.A., Thomas, J.V., Ging, P.B., Teeple, A.P., Pedraza, D.E., and Wallace, D.S., 2019, Pecos River Basin salinity assessment, Santa Rosa Lake, New Mexico, to the confluence of the Pecos River and the Rio Grande, Texas, 2015: U.S. Geological Survey Scientific Investigations Report 2019–5071, 75 p., https://doi.org/10.3133/sir20195071.

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Year Published: 2019

Peak streamflow and stages at selected streamgages on the Arkansas River in Oklahoma and Arkansas, May to June 2019

As much as 22 inches of rain fell in Oklahoma in May 2019, resulting in historic flooding along the Arkansas River in Oklahoma and Arkansas. The flooding along the Arkansas River and its tributaries that began in May continued into June 2019. Peaks of record were measured at 12 U.S. Geological Survey (USGS) streamgages on various streams in...

Lewis, Jason M.; Trevisan, Adam R.
Lewis, J.M., and Trevisan, A.R., 2019, Peak streamflow and stages at selected streamgages on the Arkansas River in Oklahoma and Arkansas, May to June 2019: U.S. Geological Survey Open-File Report 2019–1129, 10 p., https://doi.org/10.3133/ofr20191129.

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Year Published: 2019

Potentiometric surface of groundwater-level altitudes near the planned Highway 270 bypass, east of Hot Springs, Arkansas, July–August 2017

The Ouachita Mountains aquifer system potentiometric-surface map is one component of the Hot Springs Bypass Groundwater Monitoring Project. The potentiometric-surface map provides a baseline assessment of shallow groundwater levels and flow directions before the construction of the Arkansas Department of Transportation planned extension of the...

Nottmeier, Anna M.; Hays, Phillip D.
Nottmeier, A.M., and Hays, P.D., 2019, Potentiometric surface of groundwater-level altitudes near the planned Highway 270 bypass, east of Hot Springs, Arkansas, July–August 2017: U.S. Geological Survey Scientific Investigations Map 3444, 13 p., 1 sheet, https://doi.org/10.3133/sim3444.

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Year Published: 2019

Groundwater availability in the Ozark Plateaus aquifer system

Executive SummaryThe study described in this report, initiated by the U.S. Geological Survey in 2014, was designed to evaluate fresh groundwater resources within the Ozark Plateaus, central United States, as an area within a broader national assessment of groundwater availability. The goals of the Ozark study were to evaluate historical effects of...

Clark, Brian R.; Duncan, Leslie L.; Knierim, Katherine J.
Clark, B.R., Duncan, L.L., and Knierim, K.J., 2019, Groundwater availability in the Ozark Plateaus aquifer system: U.S. Geological Survey Professional Paper 1854, 82 p., https://doi.org/10.3133/pp1854.

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Year Published: 2019

Withdrawal and consumption of water by thermoelectric power plants in the United States, 2015

The U.S. Geological Survey has developed models to estimate thermoelectric water use based on linked heat and water budgets. The models produced plant-level withdrawal and consumption estimates using consistent methods for 1,122 water-using, utility-scale thermoelectric power plants in the United States for 2015. Total estimated withdrawal for...

Harris, Melissa A.; Diehl, Timothy H.
Harris, M.A., and Diehl, T.H., 2019, Withdrawal and consumption of water by thermoelectric power plants in the United States, 2015: U.S. Geological Survey Scientific Investigations Report 2019–5103, 15 p., https://doi.org/10.3133/sir20195103.

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Year Published: 2019

Status of groundwater-level altitudes and long-term groundwater-level changes in the Chicot, Evangeline, and Jasper aquifers, Houston-Galveston region, Texas, 2019

Since the early 1900s, most of the groundwater withdrawals in the Houston-Galveston region, Texas, have been from the three primary aquifers that compose the Gulf Coast aquifer system—the Chicot, Evangeline, and Jasper aquifers. Withdrawals from these aquifers are used for municipal supply, commercial and industrial use, and irrigation. This...

Braun, Christopher L.; Ramage, Jason K.; Shah, Sachin D.
Braun, C.L., Ramage, J.K., and Shah, S.D., 2019, Status of groundwater-level altitudes and long-term groundwater-level changes in the Chicot, Evangeline, and Jasper aquifers, Houston-Galveston region, Texas, 2019: U.S. Geological Survey Scientific Investigations Report 2019–5089, 18 p., https://doi.org/10.3133/sir20195089.

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Year Published: 2019

Potentiometric surface of the Mississippi River Valley alluvial aquifer, spring 2016

A potentiometric surface map for spring 2016 was created for the Mississippi River Valley alluvial (MRVA) aquifer using selected available groundwater-altitude data from wells and surface-water-altitude data from streamgages. Most of the wells were measured annually or one time after installation, but some wells were measured more than one time or...

McGuire, Virginia L.; Seanor, Ronald C.; Asquith, William H.; Kress, Wade H.; Strauch, Kellan R.
McGuire, V.L., Seanor, R.C., Asquith, W.H., Kress, W.H., and Strauch, K.R., 2019, Potentiometric surface of the Mississippi River Valley alluvial aquifer, spring 2016: U.S. Geological Survey Scientific Investigations Map 3439, 14 p., 5 sheets, https://doi.org/10.3133/sim3439.

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Year Published: 2019

Emerging contaminants in groundwater, karst, and the Edwards Aquifer

Karst aquifers have hydrogeologic characteristics that render them uniquely vulnerable to contamination from emerging contaminants (ECs). ECs comprise numerous chemical groups, including pharmaceuticals, personal-care products, flame retardants, perfluorinated and polyfluorinated compounds, nanoparticles and microplastics. Many ECs have sources,...

Mahler, Barbara; Musgrove, Marylynn

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Oil, gas, and water separation vessels at a carbon dioxide enhanced oil recovery operation
December 10, 2019

Oil, gas, and water separation vessels

Oil, gas, and water separation vessels at a carbon dioxide enhanced oil recovery operation, Horseshoe Atoll, Upper Pennsylvanian Wolfcampian play in the Permian Basin Province in Texas.

August 12, 2019

Surveying Contracted-Opening Indirect Measurements

This video goes into detail about surveying high-water marks, various aspects of bridges, and cross sections for the contracted-opening method. 
 

August 2, 2019

Requirements for the Contracted-Opening Method

This video discusses the general requirements that will be needed to accomplish a contracted-opening indirect discharge measurement. Approach section, contracted section, and necessary high-water mark locations are described along with scenarios where the method will not be successful. 
 

July 25, 2019

Climate Projections as a Way to Illustrate Future Possibilities

This video is a recording of the webinar “Climate Projections as a Way to Illustrate Future Possibilities" that is part of the USGS National Climate Adaptation Science Center (NCASC), in partnership with the National Conservation Training Center (NCTC), 2019 webinar series. Previous recordings can be found at https

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December 12, 2018

Image of the Week - Lake Meredith’s Return

Lake Meredith National Recreation Area takes its name from the water body it surrounds in the Texas Panhandle. The Amarillo-area lake sees more than a million visitors a year.

Visitor numbers were much smaller just a few years ago. More than a decade of drought shrank water levels at Lake Meredith until a rush of rain in 2017 brought a turnaround.

Each week,

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USGS scientist Scott Grzyb reviews high-water data on the Llano River in response a flash flood on October 8.
October 8, 2018

Collecting flood data on the Llano River in response to a flash flood

USGS scientist Scott Grzyb reviews high-water data collected by boat on the Llano River in Llano, Texas in response to a flash flood on October 8, 2018.

USGS scientists pause at sunset at the end of a long day collecting high-water measurements on the Llano River.
October 8, 2018

End of a long day collecting flood data on the Llano River

USGS scientists Scrott Grzyb and Michael Scheider pause at sunset at the end of a long day collecting high-water measurements along the Llano River on October 8, 2018.

September 20, 2018

Habitat Connectivity: Assessing Threats and IDing Conservation Actions

An important conservation strategy for climate change is to enhance and maintain regional habitat connectivity for the long-term viability of wildlife populations. Modeling habitat connectivity for wildlife species often results in a mapped network of linkages between habitat patches. A critical next step is to determine which of those linkages are priorities for

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June 26, 2018

Waterfowl Seeking Submerged Aquatic Vegetation

Waterfowl populations in the northern Gulf of Mexico (NGOM) rely extensively on plants that grow under the surface in shallow waters, know as submerged aquatic vegetation (SAV), as a critical food resource in the winter season. SAV roots, shoots, and seeds provide high carbohydrate wildlife food that sustains valuable waterfowl species, including the American Wigeon,

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An image of USGS research drilling rig on side of U.S. Route 90 in Kinney County, Texas.  The sky is streaked with clouds.
May 8, 2018

Going for the Eagle Ford Shale Formation, Kinney County, Texas

One charge of the U.S. Geological Survey’s Energy Resources Science Center is performing description
and analysis of hydrocarbon source rocks as input to USGS oil and gas assessments. This 2018 image
shows a coring and geophysical well-logging operation adjacent to U.S. Route 90, Kinney County, Texas.
The borehole yielded a 500’ rock core containing Austin

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Vista of Buda, Eagle Ford, and Austin Formations, Terrell County, Texas (March 10, 2015)
May 8, 2018

Vista of Buda, Eagle Ford, and Austin Formations, Terrell County

One charge of the U.S. Geological Survey’s Energy Resources Science Center is conducting field work to
better understand the distribution of hydrocarbon source rocks as input to USGS oil and gas
assessments. This 2015 image is a view to the south-southeast of rocks exposed along an unnamed
draw near Antonio Creek, Terrell County, Texas. The Buda Limestone is

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USGS Flood Inundation Mapper with water depth of 38 feet
August 26, 2019

New tools for flood preparedness are now available for the Medina River near Bandera, Texas, from the U.S. Geological Survey, the Bandera County River Authority and Groundwater District, and the Texas Water Development Board.

USGS scientist Jon Thomas collecting time-domain electromagnetic sounding in the Texas southern high plains
March 22, 2019

An interactive viewer to visualize groundwater resources in Gaines, Terry and Yoakum Counties, Texas, is now available from the U.S. Geological Survey in cooperation with the Llano Estacado Underground Water Conservation District, Sandy Land Underground Water Conservation District and South Plains Underground Water Conservation District. 

Image shows a map of the assessment units of the 2018 Delaware Basin oil and gas assessment
November 28, 2018

Estimates Include 46.3 Billion Barrels of Oil, 281 Trillion Cubic feet of Natural Gas, and 20 Billion Barrels of Natural Gas Liquids in Texas and New Mexico’s Wolfcamp Shale and Bone Spring Formation.

USGS scientist Scott Grzyb reviews high-water data on the Llano River in response a flash flood on October 8.
October 16, 2018

Reporters: Do you want to accompany a USGS field crew as they measure flooding? Please contact Jennifer LaVista or Lynne Fahlquist.

Hurricane Harvey flood-inundation map of the West Fork San Jacinto River
July 9, 2018

Nineteen inundation maps and detailed flood information from Hurricane Harvey are now available from the U.S. Geological Survey, in cooperation with the Federal Emergency Management Agency. Hurricane Harvey was the most significant rainfall event in U.S. history, both in scope and peak rainfall amounts, since records began in the 1880s.

Map of Oklahoma Low-Level Flight Study Area, Approximate
June 1, 2018

Magnetic measurements made during low-altitude airplane flights conducted for the U.S. Geological Survey and the Oklahoma Geological Survey reveal possible deep faults that may contribute to increased seismic activity in response to wastewater injection in certain portions of Oklahoma.

Prairie dog and SPV bait
December 13, 2017

About 70 percent of wild prairie dogs successfully ingested baits containing an oral sylvatic plague vaccine, or SPV, that were distributed throughout their habitats, according to a new U.S. Geological Survey study.

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