Unified Interior Regions
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
Parts of US’s Southernmost States will “Tropicalize” as Climate Changes
Cold-sensitive plants, animals moving north due to fewer, weaker winter freezes
New Report Highlights Declining Sagebrush Ecosystem, Provides Foundation for Next Generation of Conservation and Management
Fort Collins, CO – Considered one of the most imperiled ecosystems in the world and home to mule deer, pronghorn, sage-grouse, pygmy rabbits and more than 350 other species of conservation concern, the sagebrush ecosystem continues to shrink rapidly due to a host of growing threats, according to a new scientific report.
Media Bulletin: Low-Flying Airplane and Helicopter Mapping Parts of West Texas and South-Central New Mexico to aid in Mapping Geology
Editor: In the public interest and in accordance with FAA regulations, the USGS is announcing this low-level airborne project. Your assistance in informing the local communities is appreciated.
Publications
Hydrogeologic framework and groundwater characterization in selected alluvial basins in the upper Rio Grande basin, Colorado, New Mexico, and Texas, United States, and Chihuahua, Mexico, 1980 to 2015
Increasing demand for the limited water resources of the United States continues to put pressure on resource management agencies to balance the competing needs of ecosystem health with municipal, agricultural, and other uses. To meet these needs, the U.S. Geological Survey conducted a multiyear study to evaluate water resources in the upper Rio...
Houston, Natalie A.; Thomas, Jonathan V.; Foster, Linzy K.; Pedraza, Diana E.; Welborn, Toby L.
Is there an urban pesticide signature? Urban streams in five U.S. regions share common dissolved-phase pesticides but differ in predicted aquatic toxicity
Pesticides occur in urban streams globally, but the relation of occurrence to urbanization can be obscured by regional differences. In studies of five regions of the United States, we investigated the effect of region and urbanization on the occurrence and potential toxicity of dissolved pesticide mixtures. We analyzed 225 pesticide compounds in...
Nowell, Lisa H.; Moran, Patrick W.; Bexfield, Laura M.; Mahler, Barbara; Van Metre, Peter C.; Bradley, Paul; Schmidt, Travis S.; Button, Daniel T.; Qi, Sharon L.
Effects of climate and land-use change on thermal springs recharge—A system-based coupled surface-water and groundwater-flow model for Hot Springs National Park, Arkansas
A three-dimensional hydrogeologic framework of the Hot Springs anticlinorium beneath Hot Springs National Park, Arkansas, was constructed to represent the complex hydrogeology of the park and surrounding areas to depths exceeding 9,000 feet below ground surface. The framework, composed of 6 rock formations and 1 vertical fault emplaced beneath the...
Hart, Rheannon M.; Ikard, Scott J.; Hays, Phillip D.; Clark, Brian R.
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
We are working to develop 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 REEs to industry in the United States. Geologic, geophysical, and geochemical data acquired will be used to develop permissive tracts for REE related deposits and to define...
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. This website provides access to new, prioritized, assessment results and supporting data for the United States, as part of the Energy Policy and Conservation Act (EPCA).
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.
The Nonindigenous Aquatic Species Alert Risk Mapper (ARM)
The Nonindigenous Aquatic Species (NAS) program has developed a new tool, the NAS Alert Risk Mapper (ARM), to characterize waterbodies in the conterminous U.S. and Hawaii at potential risk of invasion from a new nonindigenous species sighting.
Defining Native Ranges of U.S. Inland Fishes
Understanding the native versus non-native range of a species can provide useful information about dispersal, population distribution patterns, and human mediated movement across hydrologic barriers. The USGS Nonindigenous Aquatic Species (NAS) Program is working with partners to define native ranges of inland fishes in the United States to help identify which species should be included in the...
The Nonindigenous Aquatic Species Flood and Storm Tracker (FaST)
Storm-related flooding can lead to the potential spread of nonindigenous (or non-native) aquatic species into waterways they have not been seen in before. The USGS Nonindigenous Aquatic Species program has developed an innovative mapping tool to help natural resource managers with post-storm nonindigenous aquatic species detection and assessment efforts.
Natural Resource Damage and Assessment (NRDA) Program Monitoring and Adaptive Management
State and Federal agencies are working together to assess the damage caused by the Deepwater Horizon oil spill and to determine appropriate restoration actions to restore natural resources, ecological services, and recreational services injured or lost due to the incident.
Texas Water Dashboard
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.
Data for assessing the susceptibility of groundwater used for drinking water supply from selected principal aquifers of the Western United States, 2004-2018
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 (
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
USGS National and Global Oil and Gas Assessment Project - Permian Basin Province, Midland Basin, Wolfcamp Shale Assessment Unit Boundaries and Assessment Input Data Forms, Version 2.0
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...
National Water Information System (NWIS) Mapper
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.
Downloadable Data for Arkoma Basin Oil and Gas Assessments
GIS Data for Arkoma Basin Oil and Gas Assessments
Downloadable Data for Southern Oklahoma Oil and Gas Assessments
GIS Data for Southern Oklahoma Oil and Gas Assessments
Downloadable Data for Nemaha Uplift Oil and Gas Assessments
GIS Data for Nemaha Uplift Oil and Gas Assessments
Downloadable Data for Palo Duro Basin Oil and Gas Assessments
GIS Data for Palo Duro Basin Oil and Gas Assessments
Downloadable Data for Marathon Thrust Belt 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 Cherokee Platform Oil and Gas Assessments
Downloadable Data for Anadarko Basin 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
Hydrogeologic framework and groundwater characterization in selected alluvial basins in the upper Rio Grande basin, Colorado, New Mexico, and Texas, United States, and Chihuahua, Mexico, 1980 to 2015
Increasing demand for the limited water resources of the United States continues to put pressure on resource management agencies to balance the competing needs of ecosystem health with municipal, agricultural, and other uses. To meet these needs, the U.S. Geological Survey conducted a multiyear study to evaluate water resources in the upper Rio...
Houston, Natalie A.; Thomas, Jonathan V.; Foster, Linzy K.; Pedraza, Diana E.; Welborn, Toby L. Is there an urban pesticide signature? Urban streams in five U.S. regions share common dissolved-phase pesticides but differ in predicted aquatic toxicity
Pesticides occur in urban streams globally, but the relation of occurrence to urbanization can be obscured by regional differences. In studies of five regions of the United States, we investigated the effect of region and urbanization on the occurrence and potential toxicity of dissolved pesticide mixtures. We analyzed 225 pesticide compounds in...
Nowell, Lisa H.; Moran, Patrick W.; Bexfield, Laura M.; Mahler, Barbara; Van Metre, Peter C.; Bradley, Paul; Schmidt, Travis S.; Button, Daniel T.; Qi, Sharon L. Effects of climate and land-use change on thermal springs recharge—A system-based coupled surface-water and groundwater-flow model for Hot Springs National Park, Arkansas
A three-dimensional hydrogeologic framework of the Hot Springs anticlinorium beneath Hot Springs National Park, Arkansas, was constructed to represent the complex hydrogeology of the park and surrounding areas to depths exceeding 9,000 feet below ground surface. The framework, composed of 6 rock formations and 1 vertical fault emplaced beneath the...
Hart, Rheannon M.; Ikard, Scott J.; Hays, Phillip D.; Clark, Brian R.
Initial estimates of net infiltration and irrigation from a soil-water-balance model of the Mississippi Embayment Regional Aquifer Study Area
The Mississippi embayment encompasses about 100,000 square miles and covers parts of eight States. In 2016, the U.S. Geological Survey began updating previous work for a part of the embayment known as the Mississippi Alluvial Plain to support informed water use and agricultural policy in the region. Groundwater, water use, economic, and other...
Westenbroek, Stephen, M.; Nielsen, Martha G.; Ladd, David E.
Water resources of Iberville Parish, Louisiana
Information concerning the availability, use, and quality of water in Iberville Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about 589.87 million...
Lindaman, Maxwell A.; White, Vincent E.
Groundwater-quality and select quality-control data from the National Water-Quality Assessment Project, January 2017 through December 2019
Groundwater-quality environmental data were collected from 983 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water Quality Program and are included in this report. The data were collected from six types of well networks: principal aquifer study networks, which are used to assess the quality...
Kingsbury, James A.; Bexfield, Laura M.; Arnold, Terri; Musgrove, MaryLynn; Erickson, Melinda L.; Degnan, James R.; Tesoriero, Anthony J.; Lindsey, Bruce D.; Belitz, Kenneth Multi-region assessment of chemical mixture exposures and predicted cumulative effects in USA wadeable urban/agriculture-gradient streams
Chemical-contaminant mixtures are widely reported in large stream reaches in urban/agriculture-developed watersheds, but mixture compositions and aggregate biological effects are less well understood in corresponding smaller headwaters, which comprise most of stream length, riparian connectivity, and spatial biodiversity. During 2014–2017,...
Bradley, Paul; Journey, Celeste A.; Romanok, Kristin; Breitmeyer, Sara; Button, Daniel T.; Carlisle, Daren; Huffman, Bradley; Mahler, Barbara; Nowell, Lisa H.; Qi, Sharon L.; Smalling, Kelly; Waite, Ian R.; Van Metre, Peter C. Measuring U.S. Federal Agency progress toward implementation of alternative methods in toxicity testing
The U.S. Government Accountability Office (GAO) recommended to Congress that federal agencies establish a workgroup through ICCVAM to propose metrics for assessing progress on the development and promotion of alternative methods. This document describes the recommendations of the ICCVAM Metrics Workgroup.
Gordon, John D.; Clarke, Carol; Johnson, Matthew; Reinke, Emily N.; Rattner, Barnett A.; Hwang, Steve; Craig, Evisabel; Lowit, Anna; Brown, Paul; Davis-Bruno, Karen L.; Crusan, Annabelle; Fitzpatrick, Suzanne; Kang, Jueichuan; Levis, Robin; Mendrick, Donna L.; Merrill, Jill; Berridge, Brian; Casey, Warren; Kleinstreuer, Nicole; Watson, Harold
Potentiometric surfaces, 2011–12, and water-level differences between 1995 and 2011–12, in wells of the “200-foot,” “500-foot,” and “700-foot” sands of the Lake Charles area, southwestern Louisiana
Water levels were determined in 90 wells to prepare 2011–12 potentiometric surfaces focusing primarily on the “200-foot,” 500-foot,” and “700-foot” sands of the Lake Charles area, which are part of the Chicot aquifer system underlying Calcasieu and Cameron Parishes of southwestern Louisiana. These three aquifers provided 34 percent of the total...
White, Vincent E.; Griffith, Jason M.
Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Medina County, Texas
The karstic Edwards and Trinity aquifers are classified as major sources of water in south-central Texas by the Texas Water Development Board. During 2018–20 the U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, mapped and described the geologic framework and hydrostratigraphy of the rocks composing the Edwards and Trinity...
Clark, Allan K.; Morris, Robert E.; Pedraza, Diana E.
Compounds of emerging concern detected in water samples from potable water and wastewater treatment plants and detected in water and bed-sediment samples from sites on the Trinity River, Dallas, Texas, 2009–13
The population in the Dallas-Fort Worth metropolitan area in northern Texas is rapidly growing, resulting in a rapid increase in the demand for potable water and an increase in the discharge of wastewater treatment plant effluent. An assessment of compounds of emerging concern (CECs) in samples collected at potable water and wastewater treatment...
Churchill, Christopher J.; Baldys III, Stanley; Gunn, Cathina L.; Mobley, Craig A.; Quigley, Daniel P.
Effects of urbanization on water quality in the Edwards aquifer, San Antonio and Bexar County, Texas
OverviewContinuous water-quality monitoring data and chemical analysis of surface-water and groundwater samples collected during 2017–19 in the recharge zone of the Edwards aquifer were used to develop a better understanding of the surface-water/groundwater connection in and around Bexar County in south-central Texas. This fact sheet is provided...
Opsahl, Stephen P.; Musgrove, MaryLynn; Mecum, Keith E.
U.S. regions in the tropical-to-temperate transition
A map showing North America's tropical-to-temperate transition zone. Red, orange, and yellow depict the more tropical zones, and blues depict the more temperate zones, based on to the coldest recorded temperature for each area between 1980 and 2009. Photos show some cold-sensitive plants and animals with northern range limits governed by winter cold temperature extremes.
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Subtropical snook gather at a warm Florida springhead in winter
Winter temperature extremes control the distributions of subtropical fishes. Common snook (Centropomus undecimalis), aggregate at a spring in northern Florida during winter. Snook are warm saltwater game fish, common in Florida, that have been moving further northward as extreme cold spells become less frequent and less intense.
Flight area for Trans-Pecos aeromagnetic and radiometric survey
Map indicating flight area for Trans-Pecos aeromagnetic and radiometric survey. The survey area includes parts of El Paso and Hudspeth counties, Texas, and Otero County, New Mexico. Flights will begin in November 2020 and are expected to conclude in mid-January 2021.
Austin Chalk Core
Bedding features in the core from the USGS Gulf Coast #4 Bonham borehole, in the Eagle Ford Group mudstones from a depth of about 401 feet, Fannin County, Texas. The Eagle Ford Group lies underneath the Austin Chalk and serves as the source rock for much of the Austin Chalk's petroleum.
USGS Technicians Prepare to Take a Core of the Austin Chalk in Texas
USGS technicians at the USGS Gulf Coast #4 Bonham borehole in preparation for geophysical logging of the Austin Chalk Group and the Eagle Ford Group mudstones, Fannin County, Texas.
Dragonfly Mercury Project specimen collection in Glacier NP
Researchers instruct volunteers on how to collect dragonfly larvae in Glacier NP as a part of the Dragonfly Mercury Project.
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.
Cold-sensitive plants, animals moving north due to fewer, weaker winter freezes
Fort Collins, CO – Considered one of the most imperiled ecosystems in the world and home to mule deer, pronghorn, sage-grouse, pygmy rabbits and more than 350 other species of conservation concern, the sagebrush ecosystem continues to shrink rapidly due to a host of growing threats, according to a new scientific report.
Editor: In the public interest and in accordance with FAA regulations, the USGS is announcing this low-level airborne project. Your assistance in informing the local communities is appreciated.
The Austin Chalk and Tokio and Eutaw Formations of the Gulf Coast Basin contain a mean of 6.9 billion barrels of oil and 41.5 trillion cubic feet of natural gas according to a new assessment by the U.S. Geological Survey. In comparison, the U.S. Energy Information Administration estimates that the United States used 7.5 billion barrels of petroleum products in 2019.
The scarcity or overabundance of water presents some of the most dangerous, damaging and costly threats to human life, ecosystems and property in the form of drought, floods and debris flows.
As Hurricane Laura came ashore near the Texas and Louisiana borders, its strong winds pushed so much water ahead of it that the Neches River even flowed backwards for a time, according to a USGS streamgage in Beaumont.
To learn more about USGS’s role in providing science to decision makers before, during and after Hurricane Laura, visit www.usgs.gov/laura
U.S. Geological Survey field crews are measuring flooding across the country as spring weather is in full swing. Warming temperatures, increased precipitation and snowmelt have caused moderate to major flooding in the upper Midwest, East Coast, Central Plains and the Southeast portions of the country.
On March 26, 2020, a magnitude 5.0 earthquake struck West Texas near the New Mexico border. Seismic instruments indicate the earthquake originated at a depth of 5.3 miles (8.5 kilometers).
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
Contacts
Locations
South Central Climate Adaptation Science Center
Oklahoma-Texas Water Science Center – Austin, TX Office
Phone: (512) 927-3500
Fax: (512) 927-3590
Oklahoma-Texas Water Science Center – Oklahoma City, OK Office
Phone: 405-810-4400
Fax: 405-843-7712
Oklahoma-Texas Water Science Center – Tulsa, OK Office
Phone: 918-254-6651
Oklahoma-Texas Water Science Center – Woodward, OK Office
Phone: 580-256-5031
Oklahoma-Texas Water Science Center – Lubbock, TX Office
Phone: (806) 993-0229
Fax: (806) 993-0235
Oklahoma-Texas Water Science Center – Conroe, TX Office
Phone: (936) 271-5300
Fax: (936) 271-5399
Oklahoma-Texas Water Science Center – Wichita Falls, TX Office
Phone: (940) 397-4453
Oklahoma-Texas Water Science Center – Fort Worth, TX Office
Phone: (817) 263-9545
Fax: (682) 316-5022
Oklahoma-Texas Water Science Center – El Paso, TX Office
Phone: (915) 534-6308
Fax: (915) 534-6299
Oklahoma-Texas Water Science Center – San Angelo, TX Office
Phone: (325) 944-4600
Fax: (325) 942-0495
Oklahoma-Texas Water Science Center – Corpus Christi, TX Office
Phone: (361) 825-2073
Fax: (361) 825-2025
Oklahoma-Texas Water Science Center – San Antonio, TX Office
Phone: (210) 691-9200
Fax: (210) 691-9270