Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

Regions L2 Landing Page Tabs

Filter Total Items: 141
Date published: January 18, 2018
Status: Active

Forecasting Coastal Change

This project focuses on understanding the magnitude and variability of extreme storm impacts on sandy beaches. The overall objective is to improve real-time and scenario-based predictions of coastal change to support management of coastal infrastructure, resources, and safety. 

Contacts: Kara Doran
Date published: January 18, 2018
Status: Active

National Assessment of Coastal Vulnerability to Sea Level Rise

The original national coastal vulnerability index (CVI) assessment was motivated by expected accelerated sea-level rise (SLR) and the uncertainty in the response of the coastline to SLR. This research was conducted between 1999 and 2001, and is currently being updated using new data sources and methodology. This original study was part of the ...

Date published: January 18, 2018
Status: Active

Long-Term Coastal Change

Goals of this task include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems.

Date published: December 11, 2017
Status: Active

Use of Remote Sensing Data to Quantify Bird and Bat Distributions and Inform Migratory Bird Conservation Efforts

Three federal wildlife refuge complexes on the upper Texas coast include portions of the Columbia Bottomlands and other forests that are important for migratory birds and possibly bats: Texas Mid-Coast, Trinity River, and Chenier Plain.

Date published: December 11, 2017
Status: Active

Use of Remote Sensing Data to Quantify Bird Distributions and Aid in the Environmental Assessment of Energy Development in the Gulf of Mexico Region

Knowing where migratory birds consistently stop to rest and forage is critical for conservation planning, particularly along the northern and western Gulf where there is increased interest in energy development.

Date published: December 7, 2017
Status: Active

Geologic and Morphologic Evolution of Coastal Margins

A combination of geophysics, sediment sampling, and chronology techniques are used to characterize the regional geomorphologic response of coastal systems to environmental changes.

Date published: December 5, 2017
Status: Active

The Gulf of Mexico Water Dashboard: Cross-Center Collaboration Brings Real-time, USGS Water Data to the Gulf Coast through a Spatially Enabled Mapping Application

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. The objective of this effort is to expand the Texas Water Dashboard platform to include the coastal regions of the five Gulf states: Texas, Louisiana, Mississippi, Alabama, and...

Date published: September 21, 2017
Status: Active

Flood Database for Oklahoma

A web-mapping application for historical flood information organization and access.

Contacts: S. Jerrod Smith
Date published: August 2, 2017
Status: Active

Green Infrastructure, CECs, and Geochemistry in Urban Stormwater Runoff used to Recharge Groundwater

This national project is a joint effort between the USGS and EPA looking at contaminants of emerging concern (CECs) in urban stormwater runoff that is infiltrated into the subsurface or likely to be infiltrated in the future.

Phase I of the project aims to provide a broad-scale assessment of contaminants of emerging concern (CECs) and basic composition of water chemistry in urban...

Contacts: Jason Masoner
Date published: August 1, 2017
Status: Active

Deep Well Monitoring During Seismic Activity

The USGS Oklahoma Water Science Center is working cooperatively with the USGS Earthquake Science Center (California) to monitor real-time downhole pressures, temperatures, and water levels in an effort to understand changes in pore-fluid pressure in the Arbuckle Group associated with seismic activity.

Date published: July 12, 2017
Status: Completed

Groundwater Monitoring on Fort Sill Apache Tribal Lands

This USGS investigation will examine the hydraulic properties of the Rush Springs aquifer underlying Fort Sill Apache tribal lands to determine their potential for groundwater development. The information gathered from this investigation will assist the Fort Sill Apache Tribe in identifying well locations with optimal long-term pumping capacity and water quality.

Contacts: Leland Fuhrig
Filter Total Items: 1,611
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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.

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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.

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Year Published: 2017

Refining previous estimates of groundwater outflows from the Medina/Diversion Lake system, San Antonio area, Texas

IntroductionIn 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. When full, Medina and Diversion Lakes (hereinafter referred to as the Medina/Diversion Lake...

Slattery, Richard N.; Asquith, William H.; Gordon, John D.
Slattery, R.N., Asquith, W.H., and Gordon, J.D., 2017, Refining previous estimates of groundwater outflows from the Medina/Diversion Lake system, San Antonio area, Texas: U.S. Geological Survey Fact Sheet 2017–3008, 2 p., https://doi.org/10.3133/fs20173008.

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Year Published: 2017

Bathymetry and capacity of Shawnee Reservoir, Oklahoma, 2016

Shawnee Reservoir (locally known as Shawnee Twin Lakes) is a man-made reservoir on South Deer Creek with a drainage area of 32.7 square miles in Pottawatomie County, Oklahoma. The reservoir consists of two lakes connected by an equilibrium channel. The southern lake (Shawnee City Lake Number 1) was impounded in 1935, and the northern lake (Shawnee...

Ashworth, Chad E.; Smith, S. Jerrod; Smith, Kevin A.
Ashworth, C.E., Smith, S.J., and Smith, K.A., 2017, Bathymetry and capacity of Shawnee Reservoir, Oklahoma, 2016: U.S. Geological Survey Scientific Investigations Map 3374, 1 sheet, https://doi.org/10.3133/sim3374.

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Year Published: 2017

Hydrogeology and simulation of groundwater flow and analysis of projected water use for the Canadian River alluvial aquifer, western and central Oklahoma

This report describes a study of the hydrogeology and simulation of groundwater flow for the Canadian River alluvial aquifer in western and central Oklahoma conducted by the U.S. Geological Survey in cooperation with the Oklahoma Water Resources Board. The report (1) quantifies the groundwater resources of the Canadian River alluvial aquifer by...

Ellis, John H.; Mashburn, Shana L.; Graves, Grant M.; Peterson, Steven M.; Smith, S. Jerrod; Fuhrig, Leland T.; Wagner, Derrick L.; Sanford, Jon E.
Ellis, J.H., Mashburn, S.L., Graves, G.M., Peterson, S.M., Smith, S.J., Fuhrig, L.T., Wagner, D.L., and Sanford, J.E., 2017, Hydrogeology and simulation of groundwater flow and analysis of projected water use for the Canadian River alluvial aquifer, western and central Oklahoma (ver. 1.1, March 2017): U.S. Geological Survey Scientific Investigations Report 2016–5180, 64 p., 7 pls., https://doi.org/10.3133/sir20165180.

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Year Published: 2017

A water-budget analysis of Medina and Diversion Lakes and the Medina/Diversion Lake system, with estimated recharge to Edwards aquifer, San Antonio area, Texas

In January 2001, the U.S. Geological Survey—in cooperation with the Edwards Aquifer Authority—began a study to refine and, if possible, extend previously derived (1995–96) relations between the stage in Medina Lake and recharge to the Edwards aquifer to include the effects of reservoir stages below 1,018 feet and greater than 1,046 feet above...

Slattery, Richard N.; Miller, Lisa D.
Slattery, R.N., and Miller, L.D., 2017, A water-budget analysis of Medina and Diversion Lakes and the Medina/Diversion Lake system, with estimated recharge to Edwards aquifer, San Antonio area, Texas (ver. 1.1, February 2017): U.S. Geological Survey Scientific Investigations Report 2004–5209, 41 p., https://doi.org/10.3133/sir20045209.

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Year Published: 2016

Improving our understanding of hydraulic-electrical relations: A case study of the surficial aquifer in Emirate Abu Dhabi

Transmissivity is a bulk hydraulic property that can be correlated with bulk electrical properties of an aquifer. In aquifers that are electrically-resistive relative to adjacent layers in a horizontally stratified sequence, transmissivity has been shown to correlate with bulk transverse resistance. Conversely, in aquifers that are electrically-...

Ikard, Scott; Kress, Wade H.

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Year Published: 2016

Selected streambed sediment compounds and water toxicity results for Westside Creeks, San Antonio, Texas, 2014

IntroductionThe Alazán, Apache, Martínez, and San Pedro Creeks in San Antonio, Texas, are part of a network of urban tributaries to the San Antonio River, known locally as the Westside Creeks. The Westside Creeks flow through some of the oldest neighborhoods in San Antonio. The disruption of streambed sediment is anticipated during a planned...

Crow, Cassi L.; Wilson, Jennifer T.; Kunz, James L.
Crow, C.L., Wilson, J.T., and Kunz, J.L., 2016, Selected streambed sediment compounds and water toxicity results for Westside Creeks, San Antonio, Texas, 2014: U.S. Geological Survey Fact Sheet 2016–3096, 4 p., https://doi.org/10.3133/fs20163096.

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Year Published: 2016

Occurrence and concentrations of selected trace elements, halogenated organic compounds, and polycyclic aromatic hydrocarbons in streambed sediments and results of water-toxicity testing in Westside Creeks and the San Antonio River, San Antonio, Texas, 2014

Sediment samples and samples for water-toxicity testing were collected during 2014 from several streams in San Antonio, Texas, known locally as the Westside Creeks (Alazán, Apache, Martínez, and San Pedro Creeks) and from the San Antonio River. Samples were collected during base flow and after periods of stormwater runoff (poststorm conditions) to...

Crow, Cassi L.; Wilson, Jennifer T.; Kunz, James L.
Crow, C.L., Wilson, J.T., and Kunz, J.L., 2016, Occurrence and concentrations of selected trace elements, halogenated organic compounds, and polycyclic aromatic hydrocarbons in streambed sediments and results of water-toxicity testing in Westside Creeks and the San Antonio River, San Antonio, Texas, 2014: U.S. Geological Survey Scientific Investigations Report 2016–5136, 56 p., http://dx.doi.org/10.3133/sir20165136.

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Year Published: 2016

Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas

During 2014–16, the U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, documented the geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas. The Edwards and Trinity aquifers are major sources of water for agriculture, industry, and urban and rural...

Clark, Allan K.; Golab, James A.; Morris, Robert R.
Clark, A.K., Golab, J.A., and Morris, R.R., 2016, Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas: U.S. Geological Survey Scientific Investigations Map 3366, 1 sheet, scale 1:24,000, pamphlet, https://doi.org/10.3133/sim3366.

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Year Published: 2016

Compounds of emerging concern in the San Antonio River Basin, Texas, 2011–12

The City of San Antonio and the surrounding municipalities in Bexar County, Texas, are among the fastest growing cities in the Nation. Increases in residential and commercial development are changing runoff patterns and likely will increase chemical loads into streams. The U.S. Geological Survey, in cooperation with the San Antonio River Authority...

Lambert, Rebecca B.; Opsahl, Stephen P.
Lambert, R.B., and Opsahl, S.P., 2016, Compounds of emerging concern in the San Antonio River Basin, Texas, 2011–12: U.S. Geological Survey Fact Sheet 2016–3071, 6 p., https://doi.org/10.3133/fs20163071.

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Year Published: 2016

Water-level altitudes 2016 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973–2015 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.; Johnson, Michaela R.
Kasmarek, M.C., Ramage, J.K., and Johnson, M.R., 2016, Water-level altitudes 2016 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973–2015 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas: U.S. Geological Survey Scientific Investigations Map 3365, pamphlet, 16 sheets, scale 1:100,000, http://dx.doi.org/10.3133/sim3365.

Filter Total Items: 265
Loriolia texana fossils
June 15, 2017

Marker bed known as the Loriolia Bed

Marker bed known as the Loriolia Bed, found 80 feet below the contact of the Glen Rose Limestone and the Kainer Formation. The photograph was taken north of Farm to Market Road (FM) 195, approximately 1,500 feet west of the intersection of FM 220 and FM 195. The Loriolia texana fossils are identified by white arrows (photograph by Allan K. Clark, U.S. Geological Survey,

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Groundwater-monitoring well in Osage County, Oklahoma.
April 5, 2017

Groundwater-monitoring well in Osage County, Oklahoma.

Groundwater-monitoring well and telemetry equipment in Osage County, Oklahoma

March 31, 2017

Awareness: USGS "Water-on-the-Go" Mobile App (Texas)

The USGS Texas Water Science Center has developed a new mobile application called “Water On-the-Go” that gives people easy access to current conditions in streams across Texas. The information reflects what is happening in streams near you at that very moment. Go to -- https://txpub.usgs.gov/water-onthego

March 31, 2017

Be Water Aware: USGS "Water-on-the-Go" Mobile Application

The USGS Texas Water Science Center has developed a new mobile application called “Water On-the-Go” that gives people easy access to current conditions in streams across Texas. The information reflects what is happening in streams near you at that very moment. Go to -- https://txpub.usgs.gov/water-onthego

Kansas Wildfires, March 2017, Landsat 8
March 31, 2017

March Wildfires Scorch Kansas, Oklahoma Farm and Ranch Land

This March 2017 Landsat 8 image shows massive burned scars in Kansas and Oklahoma. More than 730,000 acres of farm and ranchland were scorched by wind-driven wildfires that began March 6 and were finally extinguished on March 22.

March 31, 2017

Drilling a Research Well in the Eagle Ford

USGS scientists drill a research well near Waco, Texas, as part of the assessment of oil and gas resources in the Eagle Ford Group.  Cores like these provide information on the various rock layers, such as their make-up, their age, etc. 

Satellite image showing burn damage caused by fires.
March 17, 2017

Fires Burn Farms and Ranches in Oklahoma and Kansas

Landsat's shortwave infrared (SWIR) band measures reduced moisture content in soil and vegetation. When combined with its near-infrared (NIR) band, which helps reveal actively growing vegetation, Landsat produces highly accurate images and maps of burned areas.

Filter Total Items: 175
USGS science for a changing world logo
March 14, 2016

U.S. Geological Survey field crews are measuring record flooding in parts of eastern Texas following intense rainfall. Rainfall amounts of 18 – 20 inches over the last four days have led to record flooding and evacuations in eastern Texas.

Map showing epicenter of 5.1 Oklahoma earthquake on Feb 13th
February 13, 2016

A magnitude 5.1 earthquake struck in Oklahoma on February 13, 2016 at 11:07:06 am local time.

Image: USGS Measures Historic Flooding Across the Nation
January 4, 2016

U.S. Geological Survey field crews are measuring record flooding on rivers and streams in 12 states across the country. USGS is making preparations for a prolonged field effort along the Ohio and Mississippi Rivers as major flooding will extend well into mid-to-late January, particularly along the lower Mississippi River.

USGS
December 29, 2015

Since Saturday morning, parts of eastern Oklahoma received up to 12 inches of rain from Winter Storm Goliath. Water levels at many U.S. Geological Survey gages in that part of the state were already high due to previous rains.

A map showing the Barnett Shale assessment area in east Texas
December 17, 2015

The Barnett Shale contains estimated mean volumes of 53 trillion cubic feet of shale natural gas, 172 million barrels of shale oil and 176 million barrels of natural gas liquids, according to an updated assessment by the U.S. Geological Survey. This estimate is for undiscovered, technically recoverable resources.

Map: Area of Uranium Assessment in Texas
December 2, 2015

The uranium oxide is located in sandstone formations throughout the South Texas Coastal Plain, which borders the Gulf of Mexico. The area has long been known to contain uranium, and two mines are currently in operation, with a number of companies actively exploring for uranium.

USGS science for a changing world logo
November 3, 2015

On average, streams in the Niobrara-Mowry Play of eastern Wyoming, Fayetteville Play of Arkansas, and Barnett Play of Texas ranked most vulnerable to unconventional oil and gas development, but for different reasons, according to recent U.S. Geological Survey coauthored research.

USGS
October 30, 2015

U.S. Geological Survey field crews are measuring record flooding in parts of central Texas following intense rainfall.

USGS science for a changing world logo
October 26, 2015

The rate of earthquakes has increased sharply since 2009 in the central and eastern United States, with growing evidence confirming that these earthquakes are primarily caused by human activity, namely the injection of wastewater in deep disposal wells.

Image: Hallettsville, Texas Streamgage
September 15, 2015

The U.S. Geological Survey installed a new gage to be used for streamflow monitoring in the City of Hallettsville, Texas.

Filter Total Items: 102