Unified Interior Regions
Region 6: Arkansas-Rio Grande-Texas-Gulf
Regions L2 Landing Page Tabs
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...
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.
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...
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...
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.
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.
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...
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...
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...
Characterizing and simulating sediment loads and transport in the lower part of the San Antonio River Basin
This extended abstract is based on the U.S. Geological Survey Scientific Investigations Reports by Crow et al. (2013) and Banta and Ockerman (2014). Suspended sediment in rivers and streams can play an important role in ecological health of rivers and estuaries and consequently is an important issue for water-resource managers. The quantity and...
Banta, J. Ryan; Ockerman, Darwin J.; Crow, Cassi; Opsahl, Stephen P. Acute toxicity of runoff from sealcoated pavement to Ceriodaphnia dubia and Pimephales promelas
Runoff from coal-tar-based (CT) sealcoated pavement is a source of polycyclic aromatic hydrocarbons (PAHs) and N-heterocycles to surface waters. We investigated acute toxicity of simulated runoff collected from 5 h to 111 days after application of CT sealcoat and from 4 h to 36 days after application of asphalt-based sealcoat containing about...
Mahler, Barbara; Ingersoll, Christopher G.; Van Metre, Peter C.; Kunz, James L.; Little, Edward E. Exposure to runoff from coal-tar-sealed pavement induces genotoxicity and impairment of DNA repair capacity in the RTL-W1 fish liver cell line
Coal-tar-based (CTB) sealcoat, frequently applied to parking lots and driveways in North America, contains elevated concentrations of polycyclic aromatic hydrocarbons (PAHs) and related compounds. The RTL-W1 fish liver cell line was used to investigate two endpoints (genotoxicity and DNA-repair-capacity impairment) associated with exposure to...
Kienzler, Aude; Mahler, Barbara; Van Metre, Peter C.; Schweigert, Nathalie; Devaux, Alain; Bony, Sylvie
Occurrence of pesticides in groundwater underlying areas of high-density row-crop production in Alabama, 2009-2013
The U.S. Geological Survey, in cooperation with the Alabama Department of Agriculture and Industries, sampled a network of 15 wells for up to 167 pesticides and pesticide degradates from 2009 through 2013 in three areas of high-density row-crop agriculture in Alabama. Eighteen herbicides, 2 fungicides, and 9 degradates were detected in water from...
Welch, Heather L. Conceptual models of the formation of acid-rock drainage at road cuts in Tennessee
Pyrite and other minerals containing sulfur and trace metals occur in several rock formations throughout Middle and East Tennessee. Pyrite (FeS2) weathers in the presence of oxygen and water to form iron hydroxides and sulfuric acid. The weathering and interaction of the acid on the rocks and other minerals at road cuts can result in drainage with...
Bradley, Michael W.; Worland, Scott; Byl, Tom Soil respiration patterns and controls in limestone cedar glades
Aims Drivers of soil respiration (Rs) in rock outcrop ecosystems remain poorly understood. We investigated these drivers in limestone cedar glades, known for their concentrations of endemic plant species and for seasonal hydrologic extremes (xeric and saturated conditions), and compared our findings to those in temperate grasslands and semi-arid...
Cartwright, Jennifer M.; Hui, Dafeng Using stable isotopes of carbon to investigate the seasonal variation of carbon transfer in a northwestern Arkansas cave
Stable-isotope analyses are valuable in karst settings, where characterizing biogeochemical cycling of carbon along groundwater flow paths is critical for understanding and protecting sensitive cave and karst water resources. This study quantified the seasonal changes in concentration and isotopic composition (δ13C) of aqueous and gaseous...
Knierim, Katherine J.; Pollock, Erik; Hays, Phillip D.; Khojasteh, Jam
Dry season mean monthly flow and harmonic mean flow regression equations for selected ungaged basins in Arkansas
The U.S. Geological Survey, in cooperation with the Arkansas Department of Environmental Quality, Southwestern Energy, the Arkansas Natural Resources Commission, and the Arkansas Game and Fish Commission, developed regression equations for estimation of dry season mean monthly flows and harmonic mean flows that are representative of natural...
Breaker, Brian K.
Bibliography for acid-rock drainage and selected acid-mine drainage issues related to acid-rock drainage from transportation activities
Acid-rock drainage occurs through the interaction of rainfall on pyrite-bearing formations. When pyrite (FeS2) is exposed to oxygen and water in mine workings or roadcuts, the mineral decomposes and sulfur may react to form sulfuric acid, which often results in environmental problems and potential damage to the transportation infrastructure. The...
Bradley, Michael W.; Worland, Scott C.
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.
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
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.
Eagle Ford Drill Core
A drill core from near Waco, 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 USGS assesses undiscovered, technically recoverable oil and gas resources for the onshore United
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Eagle Ford Drill Core
A drill core from near Waco, 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 USGS assesses undiscovered, technically recoverable oil and gas resources for the onshore United
...
Eagle Ford Drill Core
A drill core from near Waco, 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 USGS assesses undiscovered, technically recoverable oil and gas resources for the onshore United
...
11 miles from FM 669 bridge Double Mt. Fork Brazos River
Location is about 11 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
U.S. Highway 84 bridge over Double Mountain Fork Brazos River
Location is about 3 miles downstream from U.S. Highway 84 bridge over Double Mountain Fork Brazos River near Justiceburg, Texas, in Garza County.
USGS SIR 2016–5032
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
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
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
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.
Memorial Day Flood in Texas
Road and bridge damage on the Blanco River near Blanco, Texas, from the Memorial Day 2015 Flood.
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.
Water produced by the High Plains aquifer, which provides water to eight states, is generally acceptable for human consumption, irrigation, and livestock watering, according to a U.S. Geological Survey study highlighted at the summer meeting of the Western States Water Council in Park City, Utah.
Spring nutrient delivery to the northern Gulf of Mexico is among the highest measured by the U.S. Geological Survey (USGS) in thirty years. Too many nutrients, which are essential for plant growth, are not necessarily a good thing.
USGS Shares Findings and Lessons from Ike at the 2009 National Hurricane Conference in Austin
The 2008 hurricane season made its mark on the northern Gulf of Mexico coastline by leaving it more vulnerable to future storms.
On Nov. 1, 1933, Mrs. Bruce Reid recorded seeing both a male and female ivory-billed woodpecker in Texas. And on May 28, 1938, Oscar McKinley Bryans observed a ruby-throated hummingbird in Michigan, noting that the birds were most common when apple trees were blooming. These are just two of more than 6 million personal observations scribbled and preserved on notecards in government files.
Low levels of certain man-made chemicals remain in public water supplies after being treated in selected community water facilities.
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
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.
Before-and-after Hurricane Ike photographs showing the near total destruction of a coastal neighborhood in Texas are now accessible online.
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/ .
Science that Weathers the Storm...USGS Scientists in the Field Preparing for Hurricane Ike (archive)
US Geological Survey (USGS) scientists will be installing storm-surge sensors to prepare for Hurricane Ike.
U.S. Geological Survey (USGS) scientists will be installing rapidly-deployable mobile gages and storm-surge sensors to prepare for Tropical Storm Gustav.
Heavy rainfall across the Midwest has caused major flooding.
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