Unified Interior Regions

Region 6: Arkansas-Rio Grande-Texas-Gulf

Regions L2 Landing Page Tabs

Filter Total Items: 141
Date published: April 17, 2016
Status: Active

Macroclimatic Controls of Coastal Wetland Ecosystem Structure and Function

At the global-scale, macroclimatic drivers govern ecosystem structure and function in tidal saline wetlands (e.g., salt marshes, mangrove forests, salt flats). However, global reviews and models for these ecosystems typically do not directly include climatic drivers. The objective of this research is to examine and forecast the effects of macroclimatic drivers on wetland ecosystem structure...

Date published: April 17, 2016
Status: Active

Geographical Trends in Ecosystem Function and Biodiversity of Wetlands as a Surrogate for Climate Change

Extreme drought and temperature in the southeastern United States may become more frequent in the future, and any  extreme shifts in climate condition are likely to have effects on wetland ecosystem function. USGS research predicts the effects of climate change by shifts in function and biodiversity across existing  climate gradients in baldcypress swamps. 

Date published: April 16, 2016

GIS and Custom Application Support for the Gulf Coast Ecosystem Restoration Council

 The scientists at the Wetland and Aquatic Science Center (WARC) have provided coastal restoration project managers and decision makers with GIS planning, database and custom application capacity since 1992. The scope and complexity of this support has increased over the years and has resulted in the development of a comprehensive geospatial and advanced application teams that provide decision...

Date published: April 11, 2016
Status: Active

Nonindigenous Aquatic Species (NAS) Program

Welcome to the Nonindigenous Aquatic Species (NAS) information resource for the United States Geological Survey. Located at Gainesville, Florida, this site has been established as a central repository for spatially referenced biogeographic accounts of introduced aquatic species. The program provides scientific reports, online/realtime queries, spatial data sets, distribution maps, and general...

Date published: April 8, 2016
Status: Active

Modeling Landscape-Scale Habitat Relations for Landbirds During Migration: Science Support for the Gulf Coast Joint Venture

USGS uses weather surveillance radar data and landscape-scale habitat metrics to model bird-habitat connections along the western coast of the Gulf of Mexico.

Date published: April 8, 2016
Status: Active

RESTORE Science: Inventory of Gulf of Mexico Ecosystem Indicators Using an Ecological Resilience Framework

To effectively manage an ecosystem, resource managers need a way to evaluate its health and ability to function. Metrics that indicate ecosystem condition - or indicators - can be used to help determine how well management strategies work. 

Date published: June 13, 2015
Status: Active

Transboundary Aquifer Assessment Program (TAAP)

Transboundary aquifers are an essential source of water for United States – Mexico border communities. Declining water levels, deteriorating water quality, and increasing use of groundwater resources on both sides of the border raise concerns about the long-term availability of this supply.

The U.S. – Mexico Transboundary Aquifer Assessment Act (Public Law 109-448) of 2006 was enacted...

Date published: June 21, 2009
Status: Completed

NAWQA High Plains Regional Groundwater Study

As part of the National Water Quality Assessment Program (NAWQA), the USGS has evaluated ground-water quality in the High Plains aquifer system. Beginning in 1999 and continuing for a period of 6 years, the High Plains Regional Groundwater Study intensively investigated the...

Date published: August 8, 2003
Status: Completed

Texas Source-Water Susceptibility Assessment

In the State of Texas, both surface water (streams, canals, and reservoirs) and ground water are used as sources of public water supply (PWS). Surface water sources of public water supply are susceptible to contamination from point and nonpoint sources. To help protect sources of drinking water and to help develop protective yet cost-effective and risk-mitigated monitoring strategies, the...

Filter Total Items: 1,599
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Year Published: 2015

Water resources of St. John the Baptist Parish, Louisiana

Information concerning the availability, use, and quality of water in St. John the Baptist 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. Information on the...

White, Vincent E.; Prakken, Lawrence B.; Fendick, Robert B.

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Year Published: 2015

Potentiometric surface, 2013, and water-level differences, 1991-2013, of the Carrizo-Wilcox aquifer in northwest Louisiana

The Carrizo-Wilcox aquifer is the primary source of fresh groundwater for public supply as well as industrial, agricultural, and domestic uses in several parishes in northwestern Louisiana, including Bienville, Bossier, Caddo, De Soto, Natchitoches, Red River, Sabine, and Webster. In 2010, about 19 million gallons per day (Mgal/d) were withdrawn...

Fendick, Robert B.; Carter, Kayla
Fendick, R.B., Jr., and Carter, Kayla, 2015, Potentiometric surface, 2013, and water-level differences, 1991–2013, of the Carrizo-Wilcox aquifer in northwest Louisiana: U.S. Geological Survey Scientific Investigations Map 3311, 1 sheet, http://dx.doi.org/10.3133/sim3311.

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Year Published: 2015

Water resources of St. Charles Parish, Louisiana

Information concerning the availability, use, and quality of water in St. Charles 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. Information on the availability, past...

White, Vincent E.; Prakken, Lawrence B.
White, V.E., and Prakken, L.B., 2015, Water resources of St. Charles Parish, Louisiana: U.S. Geological Survey Fact Sheet 2014–3118, 6 p., http://dx.doi.org/10.3133/fs20143118.

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Year Published: 2015

Water resources of La Salle Parish, Louisiana

Information concerning the availability, use, and quality of water in La Salle 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. Information on the availability, past and...

White, Vincent E.; Prakken, Lawrence B.
White, V.E., and Prakken, L.B., 2015, Water resources of La Salle Parish, Louisiana: U.S. Geological Survey Fact Sheet 2014–3089, 6 p., http://dx.doi.org/10.3133/fs20143089.

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Year Published: 2015

Potentiometric surfaces and water-level trends in the Cockfield (upper Claiborne) aquifer in southern Arkansas and the Wilcox (lower Wilcox) aquifer of northeastern and southern Arkansas, 2012

The Cockfield aquifer, located in southern Arkansas, is composed of Eocene-age sand beds found near the base of the Cockfield Formation of Claiborne Group. The Wilcox aquifer, located in northeastern and southern Arkansas, is composed of Paleocene-age sand beds found in the middle to lower part of the Wilcox Group. The Cockfield and Wilcox...

Rodgers, Kirk D.

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Year Published: 2015

Lithologic and hydrologic controls of mixed alluvial-bedrock channels in flood-prone fluvial systems: bankfull and macrochannels in the Llano River watershed, central Texas, USA

The rural and unregulated Llano River watershed located in central Texas, USA, has a highly variable flow regime and a wide range of instantaneous peak flows. Abrupt transitions in surface lithology exist along the main-stem channel course. Both of these characteristics afford an opportunity to examine hydrologic, lithologic, and sedimentary...

Heitmuller, Frank T.; Hudson, Paul F.; Asquith, William H.
Franklin T. Heitmuller, Paul F. Hudson, William H. Asquith, Lithologic and hydrologic controls of mixed alluvial–bedrock channels in flood-prone fluvial systems: Bankfull and macrochannels in the Llano River watershed, central Texas, USA, Geomorphology, Available online 24 December 2014, ISSN 0169-555X, http://dx.doi.org/10.1016/j.geomorph.2014.12.033. (http://www.sciencedirect.com/science/article/pii/S0169555X14006370)

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Year Published: 2015

Simulations of potential future conditions in the cache critical groundwater area, Arkansas

A three-dimensional finite-difference model for part of the Mississippi River Valley alluvial aquifer in the Cache Critical Groundwater Area of eastern Arkansas was constructed to simulate potential future conditions of groundwater flow. The objectives of this study were to test different pilot point distributions to find reasonable estimates of...

Rashid, Haveen M.; Clark, Brian R.; Mahdi, Hanan H.; Rifai, Hanadi S.; Al-Shukri, Haydar J.

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Year Published: 2015

Soil ecology of a rock outcrop ecosystem: Abiotic stresses, soil respiration, and microbial community profiles in limestone cedar glades

Limestone cedar glades are a type of rock outcrop ecosystem characterized by shallow soil and extreme hydrologic conditions—seasonally ranging from xeric to saturated—that support a number of plant species of conservation concern. Although a rich botanical literature exists on cedar glades, soil biochemical processes and the ecology of soil...

Cartwright, Jennifer M.; Advised by Dzantor, E. Kudjo
Cartwright, Jennifer M. Soil ecology of a rock outcrop ecosystem: Abiotic stresses, soil respiration, and microbial community profiles in limestone cedar glades. PhD. Dissertation. Tennessee State University, 2014.

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Year Published: 2014

Challenges and opportunities in protecting the Obed Wild and Scenic River

No abstract available.

Hughes, J. C.; Duncan, J. R.; Harrold, B. C.; Wolfe, William J.; Knight, Rodney R.

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Year Published: 2014

Data and spatial studies of the USGS Texas Water Science Center

Hydrologists, geographers, geophysicists, and geologists with the U.S. Geological Survey (USGS) Texas Water Science Center (TXWSC) work in the USGS Water Mission Area on a diverse range of projects built on a foundation of spatial data. The TXWSC has developed sophisticated data and spatial-studies-related capabilities that are an integral part of...

Burley, Thomas E.
Burley, T.E., 2014, Data and spatial studies of the USGS Texas Water Science Center: U.S. Geological Survey Fact Sheet 2014–3117, 4 p. http://dx.doi.org/10.3133/fs20143117.

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Year Published: 2014

Abundance of host fish and frequency of glochidial parasitism in fish assessed in field and laboratory settings and frequency of juvenile mussels or glochidia recovered from hatchery-held fish, central and southeastern Texas, 2012-13

In 2012–13, the U.S. Geological Survey (USGS), in cooperation with the U.S. Fish and Wildlife Service (USFWS), completed the first phase of a two-phase study of mussel host-fish relations for five endemic mussel species in central and southeastern Texas that were State-listed as threatened on January 17, 2010: (1) Texas fatmucket (Lampsilis...

Braun, Christopher L.; Stevens, Charrish L.; Echo-Hawk, Patricia D.; Johnson, Nathan A.; Moring, James B.
Braun, C.L., Stevens, C.L., Echo-Hawk, P.D., Johnson, N.A., and Moring, J.B., 2014, Abundance of host fish and frequency of glochidial parasitism in fish assessed in field and laboratory settings and frequency of juvenile mussels or glochidia recovered from hatchery-held fish, central and southeastern Texas, 2012–13: U.S. Geological Survey Scientific Investigations Report 2014–5217, 53 p., http://dx.doi.org/10.3133/sir20145217.

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Year Published: 2014

Simulated effects of increased groundwater withdrawals in the Cave Springs area, Hixson, Tennessee

Concern for future water supplies in Tennessee has grown in recent years as a result of increased awareness of competing needs, the impact of droughts, and the need for more water to support growing populations. The U.S. Geological Survey conducts investigations to improve the knowledge about interactions of geology, climate, humans, and...

Haugh, Connor J.
Haugh, C.J., 2014, Effects of additional groundwater withdrawals in the Cave Springs area, Hixson, Tennessee: U.S. Geological Survey Scientific Investigations Report 2014–5222, 28 p., http://dx.doi.org/10.3133/sir20145222.

Filter Total Items: 260
5 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas.
August 4, 2015

5 miles from FM Road 669 bridge Double Mt. Fork Brazos River

Location is about 5 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas, in Garza County.
USGS SIR 2016–5032

miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River, Justiceburg, Texas, Garza County.
August 4, 2015

FM 669 bridge over Double Mountain Fork Brazos River

Location is about 9 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas, in Garza County.
USGS SIR 2016–5032

Location is about 8 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg
August 4, 2015

FM 669 bridge over Double Mountain Fork Brazos River

Location is about 8 miles downstream from Farm to Market Road 669 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas, in Garza County.
USGS SIR 2016–5032

Two men collecting groundwater samples at a public well in the middle of a grassy field in Texas
July 28, 2015

Scientists Sampling Groundwater from a Public Supply Well in Texas

USGS scientists collecting water quality samples at a public-supply well in Texas, overlying the Eagle Ford shale production area.

Image: Memorial Day Flood in Texas
May 31, 2015

Memorial Day Flood in Texas

Road and bridge damage on the Blanco River near Blanco, Texas, from the Memorial Day 2015 Flood.

May 24, 2015

Texas Flood Surveys

Hydrologists from Arizona aid the Texas Water Science Center in gathering measurements and other information after the catastrophic Blanco River flooding event that swept Austin, Texas.

This image shows a damaged street sign and flood debris left behind by record flood waters of the Blanco River near Martindale,
May 24, 2015

Blanco River 2015 Memorial Weekend Flood

Picturesque rivers of the Texas Hill Country can turn into raging torrents in the part of Texas known as Flash Flood Alley when storms drop many inches of rain in the river watersheds. This image shows a damaged street sign and flood debris left behind by record flood waters of the Blanco River near Martindale, TX on Memorial weekend, 2015.

Equipment for collecting a groundwater sample is spread on a table
April 1, 2015

Groundwater sample collection

Collecting a groundwater-quality sample from a public-supply well. This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

Photo of USGS streamgage measures flooding in the lower Trinity River
March 31, 2015

USGS streamgage measures flooding in the lower Trinity River

A USGS streamgage measures flooding in the lower Trinity River, Texas. 

For the first time, USGS scientists are now collecting real-time sediment and water-quality information on water traveling into Galveston Bay. A better understanding of sediment and freshwater flow into Galveston Bay is now available from a new USGS report, done in cooperation with the Texas

...
Blue-winged Teal flying
March 28, 2015

Blue-winged Teal flying

A Blue-winged Teal flying over an sampling area in Texas.  Researchers were taking genetic samples for the Alaska Science Center.

Filter Total Items: 173
USGS
October 6, 2008

 

What: Reporters are invited to attend a special presentation about the impacts of Hurricanes Ike and Gustav on the Texas and Louisiana coast. Compelling before-and-after photographs of the storms will be

USGS
October 6, 2008

Top scientists from across the world, including 192 earth science experts from the U.S. Geological Survey (USGS), will be gathering this week to share their latest findings and most innovative research. 

USGS
September 23, 2008

Before-and-after Hurricane Ike photographs showing the near total destruction of a coastal neighborhood in Texas are now accessible online.

USGS
September 12, 2008

New maps that help forecast possible impacts and damages to coastal communities from Hurricane Ike can be accessed online.http://coastal.er.usgs.gov/hurricanes/ike/ .

USGS
August 28, 2008

U.S. Geological Survey (USGS) scientists will be installing rapidly-deployable mobile gages and storm-surge sensors to prepare for Tropical Storm Gustav.

USGS
June 25, 2007

Watch history in action as U.S. Geological Survey (USGS) scientists share the secrets of sampling for metals in water with the Indian Tribes from Oklahoma, New Mexico, Louisiana, Texas, and Arkansas U.S. Environmental Protection Agency (USEPA), Region VI.

USGS
June 5, 2007

The U.S. Geological Survey (USGS), in collaboration with National Weather Service (NWS), other Federal partners, and State and local stakeholders, has recently strengthened, or "hardened," 39 streamgages along the Texas Gulf Coast. 

USGS
May 15, 2007

Talks, workshops and demos in Tulsa, Okla., May 15-17, 2007

USGS science for a changing world logo
October 12, 2006

Scientists from the U.S. Geological Survey (USGS) released new data that illustrate the arrival of the massive dome of flood water that inundated much of southwest coastal Louisiana just before, during and after landfall of Hurricane Rita last fall.