Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

Regions L2 Landing Page Tabs

Filter Total Items: 141
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.

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.

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.

Date published: February 25, 2019
Status: Completed

May-June 2013 Midwest Floods

Learn more about USGS flood activities related to the May-June 2013 Midwest Floods.

Date published: February 25, 2019
Status: Active

Urban Waters Federal Partnership - Suspended Sediment and Nutrient Delivery to the Gulf of Mexico

Suspended sediment and nutrients from greater San Antonio can affect instream ecological health of the San Antonio River and ultimately impact Gulf of Mexico bays and estuaries. Real-time monitoring in urban and rural parts of the river basin may provide a glimpse into the importance of urban sediment and nutrient sources. Real-time sensors provide a tool to better understand and manage water...

Date published: February 14, 2019
Status: Active

Hydrologic Summary for the Cheyenne and Arapaho Tribal Jurisdictional Area

The objectives of this proposed project are to compile and evaluate existing data and reports from the USGS, other government agencies, and tribes to summarize the types of data that have been collected in the area and identify gaps in those data. Such analysis will provide a comprehensive background document of geographic, hydrologic, and environmental features of the area and will identify...

Contacts: Carol Becker
Date published: December 7, 2018
Status: Active

Arkoma Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Arkoma Basin Province 5062.

     

    Date published: December 7, 2018
    Status: Active

    Southern Oklahoma Oil and Gas Assessments

    The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the Southern Oklahoma Province (5061).

       

      Date published: December 7, 2018
      Status: Active

      Nemaha Uplift Province Oil and Gas Assessment

      The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Nemaha Uplift Province (5055).

         

        Date published: December 7, 2018
        Status: Active

        Marathon Thrust Belt Oil and Gas Asessments

        The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Marathon Thrust Belt province 5046 in southwestern Texas.

           

          Date published: December 6, 2018
          Status: Active

          Palo Duro Basin Oil and Gas Assessments

          The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Palo Duro Basin Province 5043 in Texas, New Mexico, and Oklahoma.

             

            Date published: November 30, 2018
            Status: Active

            Cherokee Platform Oil and Gas Assessments

            The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Cherokee Platform Province 5060 in Western Oklahoma, Southeast Kandas and Western Missouri.

              Filter Total Items: 40
              Date published: November 29, 2018

              Downloadable Data for Bend Arch-Fort Worth Basin Oil and Gas Assessments

              Downloadable Data for Bend Arch-Fort Worth Basin Oil and Gas Assessments 

              Date published: November 20, 2018

              Downloadable Data for Permian Basin Oil and Gas Assessments

              Follow this link to access downloadable GIS and tabular data for this province.

              Date published: August 28, 2018

              USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present

              Interactively explore assessment summary information for continuous (unconventional) assessments conducted at the USGS from 2000-2018. The assessment results data used to generate this visualization can be downloaded here in Excel Format.  These data represent all assessment results...

              Date published: May 31, 2018

              Airborne Magnetic Surveys over Oklahoma, 2017

              Airborne magnetic surveys were conducted in Oklahoma from August 11th, 2017-October 28th, 2017, by Goldak Airborne Surveys. Here we present downloadable flight line data from those surveys in comma-separated values (csv format). Three areas were flown along a draped surface with a nominal survey height above ground of 120 meters. The flight line spacing for these areas was 200 to 400 m

              Date published: January 19, 2018

              Oblique Aerial Photography Viewer

              Obique photos offer a unique perspective of the coast. Features such as beach erosion or accretion, dune erosion and overwash can all be clearly characterized in this imagery. It also documents coastal infrastructure, as well as the damage that infrastructure may incur as the result of an impacting hurricane. 

              Date published: January 1, 2018

              USGS National and Global Oil and Gas Assessment Project-Permian Basin Province, Midland Basin, Spraberry Formation Assessment Units

              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...

              Date published: December 11, 2017

              Gulf of Mexico Dashboard

              The USGS Southeast Regional Office has funded a cross-center collaboration between the Wetland and Aquatic Research Center and the Texas Water Science Center for the development of the Gulf of Mexico Water Dashboard. 

              Date published: September 1, 2017

              National Water Information System web interface (NWISweb)

              The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

              Date published: April 27, 2017

              U.S. Drought Portal

              National Integrated Drought Information System's U.S. Drought Portal.

              Date published: April 13, 2017

              Surface-water data for Oklahoma

              Real-time and historical streamflow data collected throughout Oklahoma.

              Date published: April 13, 2017

              Groundwater data for Oklahoma

              Current and historical groundwater data for Oklahoma.

              Filter Total Items: 13
              OK flood map example
              January 1, 2010

              View flooding high and low flows for streams and rivers throughout Oklahoma on the USGS WaterWatch website.

              Filter Total Items: 1,619
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              Year Published: 2020

              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.
              White, V.E., and Griffith, J.M., 2020, 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: U.S. Geological Survey Scientific Investigations Map 3460, 4 sheets, 11-p. pamphlet, http://dx.doi.org/10.3133/sim3460.

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              Year Published: 2020

              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.
              Clark, A.K., Morris, R.E., and Pedraza, D.E., 2020, Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Medina County, Texas: U.S. Geological Survey Scientific Investigations Map 3461, 13 p. pamphlet, 1 pl., scale 1:24,000, https://doi.org/10.3133/sim3461.

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              Year Published: 2020

              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.
              Churchill, C.J., Baldys, S., III, Gunn, C.L., Mobley, C.A., and Quigley, D.P., 2020, 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: U.S. Geological Survey Scientific Investigations Report 2019–5019, 57 p., https://doi.org/10.3133/sir20195019.

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              Year Published: 2020

              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.
              Opsahl, S.P., Musgrove, M., and Mecum, K.E., 2020, Effects of urbanization on water quality in the Edwards aquifer, San Antonio and Bexar County, Texas: U.S. Geological Survey Fact Sheet 2020–3028, 4 p., https://doi.org/10.3133/fs20203028.

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              Year Published: 2020

              Temporal and spatial variability of water quality in the San Antonio segment of the Edwards aquifer recharge zone, Texas, with an emphasis on periods of groundwater recharge, September 2017–July 2019

              Ongoing urbanization on the Edwards aquifer recharge zone in the greater San Antonio area raises concern about the potential adverse effects on the public water supply from development. To address this concern, the U.S. Geological Survey, in cooperation with the City of San Antonio, studied patterns of temporal and spatial changes in water quality...

              Opsahl, Stephen P.; Musgrove, MaryLynn; Mecum, Keith E.
              Opsahl, S.P., Musgrove, M., and Mecum, K.E., 2020, Temporal and spatial variability of water quality in the San Antonio segment of the Edwards aquifer recharge zone, Texas, with an emphasis on periods of groundwater recharge, September 2017–July 2019: U.S. Geological Survey Scientific Investigations Report 2020–5033, 37 p., https://doi.org/10.3133/sir20205033.

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              Year Published: 2020

              Status of groundwater-level altitudes and long-term groundwater-level changes in the Chicot, Evangeline, and Jasper aquifers, Houston-Galveston region, Texas, 2020

              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.
              Braun, C.L., and Ramage, J.K., 2020, Status of groundwater-level altitudes and long-term groundwater-level changes in the Chicot, Evangeline, and Jasper aquifers, Houston-Galveston region, Texas, 2020: U.S. Geological Survey Scientific Investigations Report 2020–5089, 18 p., https://doi.org/10.3133/sir20205089.

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              Year Published: 2020

              Characterization of peak streamflow and stages at selected streamgages in eastern and northeastern Oklahoma from the May to June 2019 flood event—With an emphasis on flood peaks downstream from dams and on tributaries to the Arkansas River

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

              Lewis, Jason M.; Williams, David J.; Harris, Sarah J.; Trevisan, Adam R.
              Lewis, J.M., Williams, D.J., Harris, S.J., and Trevisan, A.R., 2020, Characterization of peak streamflow and stages at selected streamgages in eastern and northeastern Oklahoma from the May to June 2019 flood event—With an emphasis on flood peaks downstream from dams and on tributaries to the Arkansas River: U.S. Geological Survey Open-File Report 2020–1090, 18 p., https://doi.org/10.3133/ofr20201090.

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              Year Published: 2020

              Geochemical assessment of the Hueco Bolson, New Mexico and Texas, 2016–17

              Understanding groundwater quality in transboundary aquifers like the Hueco Bolson is important for the 2.7 million people along the United States and Mexico border living in and near the combined metropolitan areas of Ciudad Juárez, Mexico, and El Paso, Texas, who rely on groundwater for water supply. To better understand water-quality conditions...

              Ging, Patricia B.; Humberson, Delbert G.; Ikard, Scott J.
              Ging, P.B., Humberson, D.G., and Ikard, S.J., 2020, Geochemical assessment of the Hueco Bolson, New Mexico and Texas, 2016–17: U.S. Geological Survey Scientific Investigations Report 2020–5056, 30 p., https://doi.org/10.3133/sir20205056.

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              Year Published: 2020

              InFRM Flood Decision Support Toolbox user guide

              Digital geospatial flood inundation mapping can be a powerful tool for flood risk management. Flood preparedness, communication, warning, response and mitigation can be enhanced by flood inundation mapping that shows floodwater extent and depth over the land surface. Flood inundation maps that accurately reflect observed and forecasted...

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              Year Published: 2020

              Effects of huisache removal on rangeland evapotranspiration in Victoria County, south-central Texas, 2015–18

              The U.S. Geological Survey and Desert Research Institute, in cooperation with the Natural Resources Conservation Service, Texas State Soil and Water Conservation Board, Victoria County Groundwater Conservation District, Victoria Soil and Water Conservation District, and the San Antonio River Authority, evaluated the hydrologic effects of Vachellia...

              Slattery, Richard N.; Ockerman, Darwin J.; Bromley, Matthew; Huntington, Justin; Banta, John R.
              Slattery, R.N., Ockerman, D.J., Bromley, M., Huntington, J., and Banta, J.R., 2020, Effects of huisache removal on rangeland evapotranspiration in Victoria County, south-central Texas, 2015–18: U.S. Geological Survey Scientific Investigations Report 2020–5008, 27 p., https://doi.org/10.3133/sir20205008.

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              Year Published: 2020

              Hydrogeologic units, contour maps, and cross sections of the Boone and Roubidoux aquifers, northeastern Oklahoma, 2020

              The Boone and Roubidoux aquifers (or their equivalents) are the main sources of fresh groundwater in northeastern Oklahoma. Projected total water demand of both surface water and groundwater in northeastern Oklahoma is expected to increase approximately 56 percent from 2010 to 2060. This report provides an overview of the hydrogeology of...

              Russell, Cory A.; Stivers, Jacob W.
              Russell, C.A., and Stivers, J.W., 2020, Hydrogeologic units, contour maps, and cross sections of the Boone and Roubidoux aquifers, northeastern Oklahoma, 2020: U.S. Geological Survey Scientific Investigations Map 3452, 2 sheets, http://dx.doi.org/10.3133/sim3452.

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              Year Published: 2020

              Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater

              Widespread disposal of landfill leachate to municipal sewer infrastructure in the United States calls for an improved understanding of the relative organic-chemical contributions to the wastewater treatment plant (WWTP) waste stream and associated surface-water discharge to receptors in the environment. Landfill leachate, WWTP influent, and WWTP...

              Masoner, Jason R.; Kolpin, Dana W.; Cozzarelli, Isabelle M.; Smalling, Kelly L.; Bolyard, Stephanie; Field, Jennifer; Furlong, Edward T.; Gray, James L.; Lozinski, Duncan; Reinhart, Debra; Rodowa, Alix; Bradley, Paul M.

              Filter Total Items: 266
              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

              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,

              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

              ...
              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

              ...
              Rafters on the Illinois River
              May 7, 2018

              Illinois River Floatcam

              Rafters enjoy the floating down the Illinois River in northeast Okalahoma.

              Image shows a drill rig and vehicles near a road at dawn
              April 17, 2018

              Eagle Ford Test Well Drilling in Texas

              USGS researchers drill a research well located on the south side of U.S. 90, 7.1 miles east of Brackettville, Texas. This core was drilled by USGS during field work for an oil and gas assessment for the Eagle Ford of the Gulf Coast Basins. Cores like these provide information on the various rock layers, such as their make-up, their age, etc. The borehole, core, and logging

              ...
              Conglomerates within the Sycamore Sand at Hammetts Crossing
              February 27, 2018

              Conglomerates, Sycamore Sand at Hammetts Crossing, Travis Cty, Texas

              Conglomerates within the Sycamore Sand at Hammetts Crossing, Travis County, Texas (photograph by Allan K. Clark, U.S. Geological Survey, February 27, 2018).
              U.S. Geological Survey Scientific Investigations Map 3418, https://doi.org/10.3133/sim3418

              Bedding plane porosity
              February 27, 2018

              Bedding plane porosity in fracture at Cow Creek Limestone

              Bedding plane porosity that developed at the junction between the bedding plane and a fracture within the Cow Creek Limestone (Cow Creek hydrostratigraphic unit) at Hammetts Crossing, Travis County, Texas (photograph by Allan K. Clark, U.S. Geological Survey, February 27, 2018).

              U.S. Geological Survey Scientific Investigations Map 3418,

              ...
              Jacobs Well Spring
              February 27, 2018

              Jacobs Well Spring, headwaters of Cypress Creek, Wimberley, Tex.

              Jacobs Well Spring, which forms the headwaters of Cypress Creek north of Wimberley, Texas (photograph by Allan K. Clark,
              U.S. Geological Survey, February 27, 2018).

              U.S. Geological Survey Scientific Investigations Map 3418, https://doi.org/10.3133/sim3418

              Photograph showing the Blanco River Valley, looking north from Little Arkansas Road, Hays County, Texas.
              February 27, 2018

              Blanco River Valley

              Photograph showing the Blanco River Valley, looking north from Little Arkansas Road, Hays County, Texas (photograph by Allan K. Clark, U.S. Geological Survey, February 27, 2018).
              U.S. Geological Survey Scientific Investigations Map 3418, https://doi.org/10.3133/sim3418.

              Filter Total Items: 175
              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.

              Photo of a young girl drinking water, which likely originated from groundwater sources. 
              December 7, 2017

              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.

              Image shows a detail shot of finchite
              October 1, 2017

              Everyone’s seen the news–scientists discover a new species of fly and name it for Beyonce; scientists discover a new species of monkey and auction its name off; etc. Hundreds of new species of animals, plants, and other organisms are discovered and named every year. But did you know that dozens of minerals are discovered every year too?

              Image: Rio Grande and Cliffs in Boquillas Canyon, Big Bend National Park
              September 14, 2017

              A new U.S. Geological Survey report describes the below ground geology of the Rio Grande transboundary region of New Mexico and Texas, United States, and northern Chihuahua, Mexico.

              Filter Total Items: 102