Unified Interior Regions
Region 6: Arkansas-Rio Grande-Texas-Gulf
Regions L2 Landing Page Tabs
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
President Proposes $971.2 Million FY 2021 Budget for USGS
Budget Focuses on Bringing Science, Facilities, and Infrastructure into the 21st Century
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.
Very large dead zone forecast for the Gulf of Mexico
NOAA's annual prediction based on USGS data
Publications
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.
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
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.
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...
Real-Time Storm Response
Coastal change forecasts and pre- and post-storm photos documenting coastal change for landfalling storms. Currently responding to Hurricane Dorian.
Gulf Coast Ecosystem Restoration Council Monitoring and Assessment Program Development
The National Oceanic and Atmospheric Administration (NOAA) and USGS will jointly lead the development of foundational components for Gulf region-wide monitoring.
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.
United States Assessments of Undiscovered Oil and Gas Resources
USGS Energy Resources Program provides periodic assessments of the oil and natural gas endowment of the United States and the World (click here for information about World Oil and Gas Assessments). This website provides access to new, prioritized, assessment results and supporting data for the United States, as part...
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
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.
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.
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...
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.
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.
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 (
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
The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.
Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models
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
GIS Data for Arkoma Basin Oil and Gas Assessments
GIS Data for Southern Oklahoma Oil and Gas Assessments
GIS Data for Nemaha Uplift Oil and Gas Assessments
GIS Data for Palo Duro Basin Oil and Gas Assessments
GIS Data for Marathon Thrust Belt Oil and Gas Assessments
Downloadable Data for Cherokee Platform Oil and Gas Assessments
Downloadable Data for Anadarko Basin Oil and Gas Assessments
This map shows the provinces assessed by the USGS for undiscovered oil and gas resources.
Digital map of aquifer boundary for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming - This digital data set represents the extent of the High Plains aquifer in the central United States
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
Information on the latest earthquakes in Oklahoma.
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
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
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.
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 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
Drought monitoring for Oklahoma.
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
Delineate custom drainage basins, compute basin characteristics, and estimate streamflow statistics.
Funding partners: Oklahoma Department of Transportation and Oklahoma Water Resources Board
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. 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 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.
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.
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.
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.
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.
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.
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.
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.
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. 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
USGS Organizational Chart
Visit: https://www.usgs.gov/about/key-officials for more details, bios, and information for these key officials listed within this organizational chart.
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.
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.
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.
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
...
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,
...
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.
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.
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
...
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,
...
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
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
Budget Focuses on Bringing Science, Facilities, and Infrastructure into the 21st Century
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.
NOAA's annual prediction based on USGS data
Reporters: Do you want to Accompany USGS Scientists as they Measure Record Flooding in Oklahoma? Please Contact Heidi Koontz or Jason Lewis.
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.
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.
Reporters: Do you want to accompany a USGS field crew as they measure flooding? Please contact Jennifer LaVista or Lynne Fahlquist.
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.
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.
No one has a crystal ball to foresee what will happen during the 2018 hurricane season that begins June 1, but NOAA forecasters say there’s a 75 percent chance this hurricane season will be at least as busy as a normal year, or busier.
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.
A regional assessment of untreated groundwater in the Rio Grande aquifer system, which includes parts of Colorado, New Mexico and Texas, is now available from the U.S. Geological Survey.
Social Media
Locations
Texas Water Science Center
Phone: (512) 927-3500
Fax: (512) 927-3590
Oklahoma Water Science Center
Phone: 405-810-4400
Fax: 405-843-7712
South Central Climate Adaptation Science Center
Woodward Field Office
Phone: 580-256-5031
Tulsa Field Office
Phone: 918-254-6651
Lubbock Field Office
Phone: (806) 742-3129
Fax: (806) 742-0100
Gulf Coast Branch (Houston) Office
Phone: (936) 271-5300
Fax: (936) 271-5399
Wichita Falls Field Office
Phone: (940) 397-4453
North Texas Branch (Fort Worth) Office
Phone: (817) 263-9545
Fax: (682) 316-5022
El Paso Field Office
Phone: (915) 534-6308
Fax: (915) 534-6299
San Angelo Field Office
Phone: (325) 944-4600
Fax: (325) 942-0495
Corpus Christi Field Office
Phone: (361) 825-2073
Fax: (361) 825-2025
South Texas Branch (San Antonio) Office
Phone: (210) 691-9200
Fax: (210) 691-9270