Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

Regions L2 Landing Page Tabs

Filter Total Items: 142
Date published: May 29, 2018
Status: Active

Hydrologic Monitoring of Medina and Diversion Lakes, San Antonio Area

In 2016, the U.S. Geological Survey (USGS), in cooperation with the San Antonio Water System, began a study to refine previously derived estimates of groundwater outflows from Medina and Diversion Lakes in south-central Texas near San Antonio.

Date published: May 29, 2018
Status: Active

InFRM Flood Inundation Mapping

The purpose of this flood inundation mapping effort will be to meet the needs of real-time emergency managers by bridging the gap between the NWS's river forecasts and FEMA's available hydraulic modeling and mapping. 

Date published: May 29, 2018
Status: Active

Hydrologic Trends Analysis on selected Texas streams

The USGS provides technical advice or assistance to the U.S. Army Corps of Engineers.

Date published: May 29, 2018
Status: Active

Hydrogeology of the Edwards and Trinity Aquifers within Hays County

The Texas Water Development Board classifies the karstic Edwards and Trinity aquifers as major sources of water in south-central Texas. To effectively manage the water resources in the area, detailed maps and descriptions of the geologic framework and hydrostratigraphic units of the aquifers in Hays County, Texas are needed. In 2016 and 2018, the Texas Water Science Center (TXWSC), in...

Contacts: Allan K Clark
Date published: May 29, 2018
Status: Active

Hydrogeologic and Geochemical Investigation of the Trinity and Northern Segment Edwards Aquifers

The USGS Texas Water Science Center, in cooperation with the Clearwater Underground Water Conservation District and Bell County Adaptive Management Coalition, is evaluating the hydrogeology and water quality of the Northern segment of the Edwards and Trinity aquifers in Bell County to provide regional resource managers responsible for regulation of water use and drought management strategies...

Date published: May 29, 2018
Status: Active

Geophysical Logging of Dockum Aquifer

To aid in the understanding of the Dockum aquifer, USGS will collect borehole geophysical logs at multiple Dockum wells. All geophysical logs will be reviewed to assess lithology and groundwater quality changes.

Date published: May 29, 2018
Status: Active

Geoelectric and Seismic Characterization of the Precambrian Granite Gravel Aquifer, Llano Uplift, Central Texas

The USGS Texas Water Science Center (TXWSC) is testing the suitability of seismic refraction tomography (SRT) and time-domain electromagnetic sounding (TDEM) geophysical methods for mapping the contact boundary between the Granite Gravel aquifer and the underlying crystalline Town Mountain Granite bedrock in southwestern Burnet County. The Granite Gravel aquifer is anticipated to show a...

Contacts: Scott Ikard
Date published: May 29, 2018
Status: Active

Hydrogeologic Atlas for Fort Bliss

Successful long term stewardship of Fort Bliss lands includes managing traditional hydrologic resources such as surface water and groundwater resources and increasingly, geologic resources such as geothermal reservoirs and deep well injection locations. The USGS Texas Water Science Center is developing a garrison-wide hydrogeologic atlas that describes the hydrology and hydrogeology of Fort...

Date published: May 29, 2018
Status: Active

Post Hurricane Harvey Assessment

In the immediate aftermath of Hurricane Harvey related flooding, the USGS Texas Water Science Center and the Federal Emergency Management Agency (FEMA) initiated a cooperative study to evaluate the magnitude of the flood, determine the probability of occurrence, and map the extent of the flood in Texas.

Date published: May 29, 2018
Status: Active

Urban Waters Federal Partnership - Edwards Aquifer Recharge Zone Monitoring Network

The USGS Texas Water Science Center is implementing a more complete and integrated monitoring network for the Edwards aquifer to improve the understanding of aquifer water quality and establish a baseline for measuring future water-quality changes.

    Filter Total Items: 1,592
    Publication Thumbnail
    Year Published: 2018

    Hydrogeology and simulation of groundwater flow in the Central Oklahoma (Garber-Wellington) Aquifer, Oklahoma, 1987 to 2009, and simulation of available water in storage, 2010–2059

    The Central Oklahoma (Garber-Wellington) aquifer underlies about 3,000 square miles of central Oklahoma. The study area for this investigation was the extent of the Central Oklahoma aquifer. Water from the Central Oklahoma aquifer is used for public, industrial, commercial, agricultural, and domestic supply. With the exception of Oklahoma City,...

    Mashburn, Shana L.; Ryter, Derek W.; Neel, Christopher R.; Smith, S. Jerrod; Correll, Jessica S.
    Mashburn, S.L., Ryter, D.W., Neel, C.R., Smith, S.J., and Correll, J.S., 2014, Hydrogeology and simulation of ground-water flow in the Central Oklahoma (Garber-Wellington) Aquifer, Oklahoma, 1987 to 2009, and simulation of available water in storage, 2010–2059 (ver. 2.0, October 2019): U.S. Geological Survey Scientific Investigations Report 2013–5219, 92 p., https://doi.org/10.3133/sir20135219.

    Publication Thumbnail
    Year Published: 2017

    Water quality, sources of nitrate, and chemical loadings in the Geronimo Creek and Plum Creek watersheds, south-central Texas, April 2015–March 2016

    Located in south-central Texas, the Geronimo Creek and Plum Creek watersheds have long been characterized by elevated nitrate concentrations. From April 2015 through March 2016, an assessment was done by the U.S. Geological Survey, in cooperation with the Guadalupe-Blanco River Authority and the Texas State Soil and Water Conservation Board, to...

    Lambert, Rebecca B.; Opsahl, Stephen P.; Musgrove, MaryLynn
    Lambert, R.B., Opsahl, S.P., and Musgrove, MaryLynn, 2017, Water quality, sources of nitrate, and chemical loadings in the Geronimo Creek and Plum Creek watersheds, south-central Texas, April 2015–March 2016: U.S. Geological Survey Scientific Investigations Report 2017–5121, 49 p., https://doi.org/10.3133/sir20175121.

    Publication Thumbnail
    Year Published: 2017

    Forecast first: An argument for groundwater modeling in reverse

    Numerical groundwater models are important compo-nents of groundwater analyses that are used for makingcritical decisions related to the management of ground-water resources. In this support role, models are oftenconstructed to serve a specific purpose that is to provideinsights, through simulation, related to a specific func-tion of a complex...

    White, Jeremy
    White, J. T. (2017), Forecast First--An argument for groundwater modeling in reverse.: Groundwater, v. 55, no. 5, p. 660–664, doi:10.1111/gwat.12558.

    Publication Thumbnail
    Year Published: 2017

    The importance of parameterization when simulating the hydrologic response of vegetative land-cover change

    Computer models of hydrologic systems are frequently used to investigate the hydrologic response of land-cover change. If the modeling results are used to inform resource-management decisions, then providing robust estimates of uncertainty in the simulated response is an important consideration. Here we examine the importance of parameterization,...

    White, Jeremy; Stengel, Victoria G.; Rendon, Samuel H.; Banta, John

    Publication Thumbnail
    Year Published: 2017

    Hydrogeology and simulated groundwater flow and availability in the North Fork Red River aquifer, southwest Oklahoma, 1980–2013

    On September 8, 1981, the Oklahoma Water Resources Board established regulatory limits on the maximum annual yield of groundwater (343,042 acre-feet per year) and equal-proportionate-share (EPS) pumping rate (1.0 acre-foot per acre per year) for the North Fork Red River aquifer. The maximum annual yield and EPS were based on a hydrologic...

    Smith, S. Jerrod; Ellis, John H.; Wagner, Derrick L.; Peterson, Steven M.
    Smith, S.J., Ellis, J.H., Wagner, D.L., and Peterson, S.M., 2017, Hydrogeology and simulated groundwater flow and availability in the North Fork Red River aquifer, southwest Oklahoma, 1980–2013: U.S. Geological Survey Scientific Investigations Report 2017–5098, 107 p., https://doi.org/10.3133/sir20175098.

    Publication Thumbnail
    Year Published: 2017

    Bathymetric surveys of the Neosho River, Spring River, and Elk River, northeastern Oklahoma and southwestern Missouri, 2016–17

    In February 2017, the Grand River Dam Authority filed to relicense the Pensacola Hydroelectric Project with the Federal Energy Regulatory Commission. The predominant feature of the Pensacola Hydroelectric Project is Pensacola Dam, which impounds Grand Lake O’ the Cherokees (locally called Grand Lake) in northeastern Oklahoma. Identification of...

    Hunter, Shelby L.; Ashworth, Chad E.; Smith, S. Jerrod
    Hunter, S.L., Ashworth, C.E., and Smith, S.J., 2017, Bathymetric surveys of the Neosho River, Spring River, and Elk River, northeastern Oklahoma and southwestern Missouri, 2016–17 (ver. 1.1, October 2017): U.S. Geological Survey Scientific Investigations Report 2017–5101, 59 p., https://doi.org/10.3133/sir20175101.

    Publication Thumbnail
    Year Published: 2017

    Water-level altitudes 2017 and water-level changes in the Chicot, Evangeline, and Jasper Aquifers and compaction 1973–2016 in the Chicot and Evangeline Aquifers, Houston-Galveston region, Texas

    Most of the land-surface subsidence in the Houston-Galveston region, Texas, has occurred as a direct result of groundwater withdrawals for municipal supply, commercial and industrial use, and irrigation that depressured and dewatered the Chicot and Evangeline aquifers, thereby causing compaction of the aquifer sediments, mostly in the fine-grained...

    Kasmarek, Mark C.; Ramage, Jason K.
    Kasmarek, M.C., and Ramage, J.K., 2017, Water-level altitudes 2017 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973–2016 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas: U.S. Geological Survey Scientific Investigations Report 2017–5080, 32 p., https://doi.org/10.3133/sir20175080.

    Publication Thumbnail
    Year Published: 2017

    Geophysics- and geochemistry-based assessment of the geochemical characteristics and groundwater-flow system of the U.S. part of the Mesilla Basin/Conejos-Médanos aquifer system in Doña Ana County, New Mexico, and El Paso County, Texas, 2010–12

    One of the largest rechargeable groundwater systems by total available volume in the Rio Grande/Río Bravo Basin (hereinafter referred to as the “Rio Grande”) region of the United States and Mexico, the Mesilla Basin/Conejos-Médanos aquifer system, supplies water for irrigation as well as for cities of El Paso, Texas; Las Cruces, New Mexico; and...

    Teeple, Andrew P.
    Teeple, A.P., 2017, Geophysics- and geochemistry-based assessment of the geochemical characteristics and groundwater-flow system of the U.S. part of the Mesilla Basin/Conejos-Médanos aquifer system in Doña Ana County, New Mexico, and El Paso County, Texas, 2010–12: U.S. Geological Survey Scientific Investigations Report 2017–5028, 183 p., https://doi.org/10.3133/sir20175028.

    Publication Thumbnail
    Year Published: 2017

    Coal-tar-based pavement sealants—a potent source of PAHs

    P avement sealants are applied to the asphalt pavement of many parking lots, driveways, and even playgrounds in North America (Figure 1), where, when first applied, they render the pavement glossy black and looking like new. Sealant products used commercially in the central, eastern, and northern United States typically are coal-tarbased, whereas...

    Mahler, Barbara; Van Metre, Peter C.
    Mahler, B.J., and Van Metre, P.C., 2017, Coal-tar-based pavement sealants—A potent source of PAHS: LakeLine, North American Lake Management Society, v. 37–1, p. 13–18 (https://z0ku333mvy924cayk1kta4r1-wpengine.netdna-ssl.com/wp-content/uploads/2017/08/37-1-4.pdf).

    Publication Thumbnail
    Year Published: 2017

    Similarities and differences in occurrence and temporal fluctuations in glyphosate and atrazine in small Midwestern streams (USA) during the 2013 growing season

    Glyphosate and atrazine are the most intensively used herbicides in the United States. Although there is abundant spatial and temporal information on atrazine occurrence at regional scales, there are far fewer data for glyphosate, and studies that compare the two herbicides are rare. We investigated temporal patterns in glyphosate and atrazine...

    Mahler, Barbara; Van Metre, Peter C.; Burley, Thomas E.; Loftin, Keith A.; Meyer, Michael T.; Nowell, Lisa H.
    Mahler, B.J., Van Metre, P.C., Burley, T.E., Loftin, K.A., Meyer, M.T., and Nowell, L.H., 2016, Similarities and differences in occurrence and temporal fluctuations in glyphosate and atrazine in small Midwestern streams (USA) during the 2013 growing season: Sci. Total Environ.

    Publication Thumbnail
    Year Published: 2017

    New insights into nitrate dynamics in a karst groundwater system gained from in situ high-frequency optical sensor measurements

    Understanding nitrate dynamics in groundwater systems as a function of climatic conditions, especially during contrasting patterns of drought and wet cycles, is limited by a lack of temporal and spatial data. Nitrate sensors have the capability for making accurate, high-frequency measurements of nitrate in situ, but have not yet been evaluated for...

    Opsahl, Stephen P.; Musgrove, MaryLynn; Slattery, Richard N.
    Opsahl, S.P., Musgrove, M, Slattery, R.N., 2017, New Insights Into Nitrate Dynamics in a Karst System Gained from High-Frequency Optical Sensor Measurements, Journal of Hydrology, v. 546, p. 179-188.

    Publication Thumbnail
    Year Published: 2017

    Characterization of streamflow, suspended sediment, and nutrients entering Galveston Bay from the Trinity River, Texas, May 2014–December 2015

    The U.S. Geological Survey (USGS), in cooperation with the Texas Water Development Board and the Galveston Bay Estuary Program, collected streamflow and water-quality data at USGS streamflow-gaging stations in the lower Trinity River watershed from May 2014 to December 2015 to characterize and improve the current understanding of the quantity and...

    Lucena, Zulimar; Lee, Michael T.
    Lucena, Zulimar, and Lee, M.T., 2017, Characterization of streamflow, suspended sediment, and nutrients entering Galveston Bay from the Trinity River, Texas, May 2014–December 2015: U.S. Geological Survey Scientific Investigations Report 2016–5177, 38 p., https://doi.org/10.3133/sir20165177.

    Filter Total Items: 259
    Image shows a USGS scientist in a PFD servicing a streamgage
    August 31, 2017

    Servicing a Streamgage at Addicks Reservoir following Hurricane Harvey

    USGS scientist Jimmy Hopkins repairs a streamgage downstream of Addicks reservoir at Buffalo Bayou after flooding from Hurricane Harvey. This gauge is normally accessed on land from a platform on the side of a bridge.

    USGS scientist Lisa Ashmore services a water-quality monitor on Lake Houston. These instruments stayed afloat throughout Harvey.
    August 31, 2017

    Servicing a water-quality monitor following Harvey

    USGS scientist Lisa Ashmore services a water-quality monitor on Lake Houston. These instruments stayed afloat and collected data throughout Harvey. 

    A USGS scientist wearing a PFD measures flooding on the Guadalupe River
    August 30, 2017

    Measuring Hurricane Harvey Flooding on the Guadalupe River

    USGS scientist Alec MacDonald takes flood measurements on the Guadalupe River in Victoria, Texas.

    Image shows a USGS scientist in a PFD servicing a streamgage
    August 29, 2017

    Servicing the Streamgage at Addicks Reservoir

    USGS scientist Tom Pistillo services the streamgage at Addicks Reservoir to ensure that accurate reservoir water-level data are being measured, which are critical for helping the U.S. Army Corps of Engineers and Harris County Flood Control District make informed reservoir operation decisions.

    Image shows flooding around a streamgage at Addicks Reservoir
    August 29, 2017

    Hurricane Harvey Flooding at Addicks Reservoir

    USGS field crew measure reservoir water-level data at Addicks Reservoir, which are critical for helping the U.S. Army Corps of Engineers make informed reservoir operation decisions.

    Image shows flooding at a streamgage site on Addicks Reservoir
    August 29, 2017

    Hurricane Harvey Flooding at Addicks Reservoir

    USGS field crew measure reservoir water-level data at Addicks Reservoir, which are critical for helping the U.S. Army Corps of Engineers make informed reservoir operation decisions.

    Image shows a USGS scientist in a PFD servicing a streamgage
    August 29, 2017

    Servicing a Streamgage at Barker Reservoir Following Hurricane Harvey

    USGS scientist Tom Pistillo wades through the waters of Barker Reservoir to ensure accurate reservoir water-level data are being measured, which are critical for helping the U.S. Army Corps of Engineers and Harris County Flood Control District make informed reservoir operation decisions.

    Image shows a police car in a flooded roadway in Texas
    August 27, 2017

    Hurricane Harvey Flooding on Buffalo Bayou at Piney Point

    USGS field crews made multiple record high flood measurements on Aug. 27, including downstream of Addicks and Barker dam. Flood measurements near Addicks and Barker dam are critical for making public safety decisions, as 1.2 million people live downstream.

    USGS hydrologic technicians Eric Boeding and Robert Ellis measured the height and speed of

    ...
    USGS scientist Jeff East is monitoring streamflow and flooding from Hurricane Harvey.
    August 26, 2017

    USGS Scientist Monitoring Streamflow & Flooding from Hurricane Harvey

    In addition to staff that conduct field measurements of flooding conditions, others monitor information indoors. Here, USGS scientist Jeff East is monitoring streamflow and flooding from Hurricane Harvey.

     

    USGS scientist Matthew Barnes makes the highest streamflow measurement ever recorded at Eagle Ferry Rd near Anahuac, Texas.
    August 26, 2017

    Highest streamflow recorded near Anahuac, Texas.

    USGS scientist Matthew Barnes makes the highest streamflow measurement ever recorded at Eagle Ferry Rd near Anahuac, Texas. Find more
    information from this site information here: https://waterdata.usgs.gov/nwis/uv?site_no=08042558

    A streamgage near a bridge cross over a river.
    August 26, 2017

    USGS Streamgage on West Side of Houston During Hurricane Harvey

    Photo of a USGS streamgage on the west side of Houston during Hurricane Harvey. Find more information from this site information here:
    https://waterdata.usgs.gov/nwis/uv?site_no=08072680

     

    Filter Total Items: 170
    Southwestern Willow Flycatcher
    September 6, 2016

    A new report by the U.S. Geological Survey shows, for the first time ever, detailed habitat information on the entire range of a federally listed endangered bird allowing officials to take a scientific approach to helping protect the species.

    Crop of OK earthquake
    September 3, 2016

    A magnitude 5.8 earthquake struck in Oklahoma on September 3, 2016 at 12:02:44 UTC (7:02 am local time). 

    Photo of the Colorado River near Moab, Utah
    August 15, 2016

    Future groundwater replenishment in the Upper Colorado River Basin may benefit from projected increases in future basin-wide precipitation under current climate projections, according to a recent study by the U.S. Geological Survey and Bureau of Reclamation.

    Catawba rhododendron blooming at Round Bald, NC
    August 11, 2016

    “From the mountains to the coast, the southeastern U.S. contains ecosystems that harbor incredible biodiversity. Many of those ecosystems are already highly at risk from urbanization and other human land-use change. Identifying the ecosystems at risk from climate change will help inform conservation and management to ensure we don’t lose that biodiversity.” (Jennifer Constanza, report author)

    USGS
    June 21, 2016

    A new report about how groundwater quality and quantity has changed in and around Gaines, Terry and Yoakum counties, Texas is now available from the U.S. Geological Survey.

    Photo of a temporary streamgage installed by the USGS on the Brazos River near West Columbia, Texas.
    June 1, 2016

    Reporters: Do you want to interview USGS scientists as they measure flooding? Please contact Jennifer LaVista.

    Texas Water Dashboard map showing streamflow and weather conditions for May 27, 2016.
    May 27, 2016

    Reporters: Do you want to interview USGS scientists as they measure flooding? Please contact Jennifer LaVista.

    Filter Total Items: 102