Unified Interior Regions

Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands)

Regions L2 Landing Page Tabs

Filter Total Items: 371
Date published: July 14, 2009

Quality of Shallow Groundwater and Drinking Water in the Mississippi Embayment-Texas Coastal Uplands Aquifer System and the Mississippi River Valley Alluvial Aquifer, South-Central United States, 1994–2004

The Mississippi embayment-Texas coastal uplands aquifer system is an important source of drinking water, providing about 724 million gallons per day to about 8.9 million people in Texas, Louisiana, Mississippi, Arkansas, Missouri, Tennessee, Kentucky, Illinois, and Alabama. The Mississippi River Valley alluvial aquifer ranks third in the Nation for total withdrawals of which more than 98...

Date published: April 17, 2009

Integrative Studies of Florida Spring Ecosystems

Florida's springs are a source of cultural, recreational, and ecological importance. But land-use changes and increased demands for groundwater due to the state's growing population have led to widespread impairment of these unique ecosystems. 

Date published: January 21, 2009

Digital Hydrogeologic Surface and Thickness of the Mississippi Embayment Regional Aquifer Study (MERAS)

Short Title: MERAS Framework

Project Chief: Rheannon Hart

Cooperator: U.S. Geological Survey Office of Ground-Water Resources Program

Project Time Frame: January 2006 - 2009

A hydrogeologic framework for a ground-water flow model is under development as part...

Contacts: Rheannon M Hart
Date published: January 1, 2009

Lower Mississippi River National Rivers and Streams Assessment

Short Title: Mississippi River NRSA

Project Chief: Billy Justus

Cooperator: U.S. Environmental Protection Agency

Project Time Frame: 2008 - 2009

The USGS Arkansas and Missouri Water Science Centers (WSC) are conducting a study for the U.S. Environmental...

Contacts: Billy G Justus
Date published: January 7, 2005
Status: Active

Environmental Monitoring and Assessment of Fivemile Creek at Tarrant, AL

The Black Warrior - Cahaba Rivers Land Trust and City of Tarrant (as part of the Fivemile Creek Greenway Partnership) are among the new USGS cooperators for 2003 -04. These organizations are spearheading an effort to restore Fivemile Creek in Jefferson County to its place as an important asset in daily lives for those who live and work along the creek in northern Jefferson County. The Greenway...

Date published: January 7, 2005
Status: Completed

Water Use in Alabama, by Watershed, 2005

Water is one of the most important of Alabama's natural resources. Water is not only a vital component of human existence, it is critical to the overall quality of life. In order to protect and preserve this resource for future generations, we must have a baseline of information to make decisions. Decision and policy makers must know the answers to three fundamental questions: where is the...

Date published: January 2, 2005
Status: Completed

Water use, by category of use, in Alabama, 2005

More surface water than ground water was withdrawn for all categories except aquaculture, mining, and self-supplied residential. During 2005, estimated withdrawals by category and in descending order were: thermoelectric power, 8,274 Mgal/d; public supply, 802 Mgal/d; self-supplied industrial, 550 Mgal/d; irrigation, 161 Mgal/d; aquaculture, 75 Mgal/d; self-supplied residential, 39 Mgal/d;...

Date published: January 1, 2005
Status: Completed

Water Use in Alabama, 2005

Water is one of the most important of Alabama's natural resources. Water is not only a vital component of human existence, it is critical to the overall quality of life. In order to protect and preserve this resource for future generations, we must have a baseline of information to make decisions. Decision and policy makers must know the answers to three fundamental questions: where is the...

Date published: January 1, 2005
Status: Completed

Water use, by county, in Alabama, 2005

Water is one of the most important of Alabama's natural resources. Water is not only a vital component of human existence, it is critical to the overall quality of life. In order to protect and preserve this resource for future generations, we must have a baseline of information to make decisions. Decision and policy makers must know the answers to three fundamental questions: where is the...

Date published: September 29, 2001
Status: Active

Alabama Statewide Flood Frequency

The magnitude and frequency of floods are important factors in the design of bridges, culverts, highway embankments, dams, and other hydraulic structures near streams. Information on flood magnitude and frequency is also used in flood plain management and development, and in establishing flood insurance rates. The objective of this project is to develop improved methods and equations for...

Filter Total Items: 5,355
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Year Published: 2020

Enhanced El Niño-Southern Oscillation variability in recent decades

The El Niño–Southern Oscillation (ENSO) represents the largest source of year-to-year global climate variability. While Earth system models suggest a range of possible shifts in ENSO properties under continued greenhouse gas forcing, many centuries of preindustrial climate data are required to detect a potential shift in the properties of recent...

Grothe, Pamela R.; Cobb, Kim M.; Liguori, Giovanni; Di Lorenzo, Emanuele; Capotondi, Antonietta; Lu, Yanbin; Cheng, Hai; Edwards, R. Lawrence; Southon, John R.; Santos, Guaciara M.; Decampo, Daniel M.; Lynch-Stieglitz, Jean; Chen, Tianran; Sayani, Hussein R.; Thompson, Diane M.; Conroy, Jessica L.; Moore, Andrea L.; Townsend, Kayla; Hagos, Melat; O’Connor, Gemma; Toth, Lauren T.

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Year Published: 2020

Mapping climate change resistant vernal pools in the northeastern U.S.

Vernal pools are seasonal wetlands that provide important breeding habitat for a variety of amphibian species. As future climate projections indicate warmer growing seasons and earlier seasonal increases in evapotranspiration, some managers of vernal pools have expressed concern that pools may dry earlier in the season, potentially interfering...

Cartwright, Jennifer M.; Campbell Grant, Evan H.

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Year Published: 2019

Spatially referenced models of streamflow and nitrogen, phosphorus, and suspended-sediment loads in the southeastern United States

Spatially Referenced Regression On Watershed attributes (SPARROW) models were applied to describe and estimate mean-annual streamflow and transport of total nitrogen (TN), total phosphorus (TP), and suspended sediment (SS) in streams and delivered to coastal waters of the southeastern United States on the basis of inputs and management practices...

Hoos, Anne B.; Roland II, Victor L.
Hoos, A.B., and Roland, V.L. II, 2019, Spatially referenced models of streamflow and nitrogen, phosphorus, and suspended-sediment loads in the Southeastern United States: U.S. Geological Survey Scientific Investigations Report 2019–5135, 91 p., https://doi.org/10.3133/sir20195135.

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Year Published: 2019

Louisiana Coastal Zone sediment characterization; Comparison of sediment grain sizes for samples collected in 2008 and 2015–2016 from the western Chenier plain to the Chandeleur Islands, Louisiana—Louisiana Barrier Island Comprehensive Monitoring (BICM) Program

Repeated sampling and grain-size analysis of surficial sediments along the sandy shorelines of Louisiana is necessary to characterize coastal-zone sediment properties and evaluate sediment transport patterns within the nearshore environments. In 2008, and again in 2015 and 2016, sediment grab samples were collected along the shorelines of the...

Bosse, Stephen T.; Flocks, James G.; Bernier, Julie C.; Georgiou, Ioannis Y.; Kulp, Mark A.; Brown, Michael
Bosse, S.T., Flocks, J.G., Bernier, J.C., Georgiou, I.Y., Kulp, M.A., and Brown, M., 2019, Louisiana Coastal Zone sediment characterization; Comparison of sediment grain sizes for samples collected in 2008 and 2015–2016 from the western Chenier plain to the Chandeleur Islands, Louisiana—Louisiana Barrier Island Comprehensive Monitoring (BICM) Program: U.S. Geological Survey Open-File Report 2019–1132, 17 p., https://doi.org/10.3133/ofr20191132.

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Year Published: 2019

Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region

This report is a deliverable to the RESTORE Council for Task 7: Document the existing baseline habitat and water quality conditions prior to implementation of the restoration projects; these baseline conditions will serve as a basis for measuring change/progress after restoration. It is the second in a series of CMAP reports. The first report...

Bosch, Julie; Burkart, Heidi; Chivoiu, Bogdan; Clark, Randy; Clement, Chris; Enwright, Nicholas; Giordano, Steve; Jeffrey, Chris; Johnson, Ed; Hart, Rheannon M.; Davidson Hile, Sarah; Howell, Jacob; Laurenzano, Claudia; Lee, Michael T.; McCloskey, Terrence A.; McTigue, Terry; Meyers, Michelle B.; Mize, Scott V.; Monaco, Mark E.; Owen, Kevin; Rebich, Richard A.; Rendon, Samuel H.; Robertson, Ali; Sample, Thomas; Steyer, Gregory D.; Suir, Kevin J.; Swarzenski, Christopher M.; Watson, Katie

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Year Published: 2019

Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill

Extensive information is available about infaunal soft-sediment communities in the Gulf of Mexico (Gulf) (Pequegnat et al. 1990, Rowe and Kennicutt II 2009, Wei et al. 2010), particularly from the large-scale sampling effort of the Deep Gulf of Mexico Benthos (DGOMB) project in the early 2000s (Rowe and Kennicutt II 2009). Infaunal soft-sediment...

Bourque, Jill R.; Demopoulos, Amanda W.J.

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Year Published: 2019

Cultivating future environmental stewards: A case study at John D. MacArthur Beach State Park

Our study supports previous research suggesting that participation in citizen-science programs can significantly enhance student learning and attitudes about science, while simultaneously promoting environmental stewardship. Providing students with the opportunity to collect scientific data through citizen-science programs can increase their...

Frehm, Veronica L.; Gravinese, Philip M.; Toth, Lauren T.

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Year Published: 2019

Scientist’s guide to developing explanatory statistical models using causal analysis principles

Recent discussions of model selection and multimodel inference highlight a general challenge for researchers, which is how to clearly convey the explanatory content of a hypothesized model or set of competing models. The advice from statisticians for scientists employing multimodel inference is to develop a well‐thought‐out set of candidate models...

Grace, James B.; Irvine, Kathryn

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Year Published: 2019

Simulation of groundwater flow and chloride transport in the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand of the Baton Rouge area, Louisiana

Groundwater withdrawals since the 1940s have lowered water levels, altered groundwater-flow directions, and caused saltwater to intrude within some freshwater-containing sands of the fluvial-deltaic Southern Hills regional aquifer system beneath Baton Rouge, Louisiana. New interpretations of stratigraphic correlations amongst geophysical well logs...

Heywood, Charles E.; Lindaman, Maxwell A.; Lovelace, John K.
Heywood, C.E., Lindaman, M., and Lovelace, J.K., 2019, Simulation of groundwater flow and chloride transport in the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand of the Baton Rouge area, Louisiana: U.S. Geological Survey Scientific Investigations Report 2019–5102, 49 p., https://doi.org/10.3133/sir20195102.

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Year Published: 2019

Plot Locator: An app for locating plots in the field

PREMISE: One of the challenges in field biology is locating previously sampled plots. The Plot Locator app was developed to assist field biologists with plot identification and location, with or without GPS or online connectivity. METHODS AND RESULTS: The Plot Locator Android app helps users locate field plots by creating a searchable database...

Boudell, Jere ; Middleton, Beth

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Year Published: 2019

Using maintenance records from a long-term sensor monitoring network to evaluate the relationship between maintenance schedule and data quality

Sensor-based environmental monitoring networks are beginning to provide the large-scale, long-term data required to address important fundamental and applied questions in ecology. However, the data quality from deployed sensors can be difficult and costly to ensure. In this study, we use maintenance records from the 12-year history of Louisiana’s...

Schoolmaster, Donald; Piazza, Sarai

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Year Published: 2019

Sedimentation survey of Lago Guayabal, Villalba, Puerto Rico, December 2017

The U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, conducted a sedimentation survey of Lago Guayabal in 2017 to determine reservoir infill sedimentation rates, generate a bathymetric map of the bottom elevations of the reservoir, and create a stage-volume relation. The original (1913) capacity of Lago...

Gómez-Fragoso, Julieta M.; Rosario, Manuel
Gómez-Fragoso, J.M., and Rosario, M., 2019, Sedimentation survey of Lago Guayabal, Villalba, Puerto Rico, December 2017: U.S. Geological Survey Scientific Investigations Map 3442, 1 sheet, https://doi.org/10.3133/sim3442.

Filter Total Items: 498
Image: Florida floods with extreme highwater
April 15, 2009

Florida floods with extreme highwater

The dry landscape of northwest Florida floods with extreme highwater from the Withlacoochee River.

Image: A Diversity of Corals Growing in the Mangroves Within Virgin Islands Coral Reef National Monument
March 21, 2009

A Diversity of Corals Growing in the Mangroves Within Virgin Islands Coral Reef National Monument

This photo shows a mangrove ecosystem that may be unique in the Caribbean in terms of the abundance and diversity of corals.

USGS scientists are collaborating with scientists at the University of the Virgin Islands to learn more about why these corals are thriving while coral cover on USVI reefs has declined by 60% from bleaching and disease.  With climate change,

...
Image: A Diversity of Corals Growing in the Mangroves Within Virgin Islands Coral Reef National Monument
March 21, 2009

A Diversity of Corals Growing in the Mangroves Within Virgin Islands Coral Reef National Monument

This photo shows a mangrove ecosystem that may be unique in the Caribbean in terms of the abundance and diversity of corals.

USGS scientists are collaborating with scientists at the University of the Virgin Islands to learn more about why these corals are thriving while coral cover on USVI reefs has declined by 60% from bleaching and disease.  With climate change,

...
Image: Mycetophyllia sp. Coral Abundance in the Virgin Islands
March 8, 2009

Mycetophyllia sp. Coral Abundance in the Virgin Islands

This coral (Mycetophyllia sp.) is not abundant in coral reefs of the Virgin Islands. It most commonly grows in water deeper than 40 ft., and it is surprising to find it growing in the shade of the mangroves in 3 ft of water.

Image: Red Mangroves in Hurricane Hole, US Virgin Islands
January 24, 2009

Red Mangroves in Hurricane Hole, US Virgin Islands

In Hurricane Hole, Red Mangrove trees extend from land into the water, anchoring the trees along the shoreline and creating a rich marine ecosystem.

Image: A Queen Angelfish Swims in Front of Coral Colonies of Several Species Growing in Mangroves Within Virgin Islands Coral Reef National Monument
December 31, 2008

A Queen Angelfish Swims in Front of Coral Colonies of Several Species Growing in Mangroves Within Virgin Islands Coral Reef National Monument

This photo shows a mangrove ecosystem that may be unique in the Caribbean in terms of the abundance and diversity of corals.

USGS scientists are collaborating with scientists at the University of the Virgin Islands to learn more about why these corals are thriving while coral cover on USVI reefs has declined by 60% from bleaching and disease.  With climate change,

...
Image: Alabama Sturgeon
September 11, 2008

Alabama Sturgeon

An endangered Alabama sturgeon from the Mobile River.

Image: Alabama Sturgeon
September 11, 2008

Alabama Sturgeon

An endangered Alabama sturgeon from the Mobile River.

Image: Bucolic Country Lane in Florida
August 21, 2008

Bucolic Country Lane in Florida

This bucolic country lane in east central Florida is lined with cabbage palms and oaks, a scene that is made increasingly rare with ongoing pressures of urbanization.

Filter Total Items: 399
USGS
October 19, 1999

Today, as Hurricane Jose was upgraded from a tropical storm, the U. S. Geological Survey in Puerto Rico was monitoring the storm’s path and intensity very closely. If the hurricane threatens Puerto Rico later this week, as predicted, the USGS is prepared to provide critical information to local government and emergency management officials responsible for protecting the lives and property of Puert

USGS
September 29, 1999

While navigating the treacherous floodwaters in North Carolina to measure the rising water caused by Hurricane Floyd, U.S. Geological Survey scientists rescued four citizens threatened by the storm.

USGS
September 23, 1999

While much of eastern North Carolina remains under water, U.S. Geological Survey scientists and hydrologic technicians are boating over rooftops, submerged cars, and bridges and roads topped by deep water to collect data and determine the amount of environmental damage done by Hurricane Floyd’s heavy rains.

USGS
September 21, 1999

Flood levels from Hurricane Floyd exceeded those from Hurricane Fran, which occurred in September 1996.Preliminary assessments indicate that flood levels in much of the Tar River Basin were at the 500-year recurrence interval. (500-year flood flow has a 0.2-percent chance of being equalled or exceeded during any given year at a particular location.)

USGS
September 20, 1999

River stage and streamflow data--The U.S. Geological Survey (USGS) collects river stage and streamflow data at more than 200 sites across North Carolina. Near real-time data at most sites are transmitted via satellite to a central data base that compiles current and historical data.

USGS
September 17, 1999

USGS scientists from the Patuxent Wildlife Research Center, the National Wetlands Research Center and the Florida and Caribbean Science Center are gearing up to assess Hurricane Floyd damage to wildlife and habitat from Florida to Maine.

USGS
September 17, 1999

Wildfires have long played a key role in structuring ecosystems and plant communities in the southeastern United States. From the coastal prairie of Texas and Louisiana to the marshes and pinelands of Florida, many native species have adapted to a natural regime of frequent wildfire caused by lightning strikes.

USGS
September 14, 1999

The USGS, in collaboration with State and other Federal agencies, is evaluating the extent of erosion along North Carolina’s coastline following Hurricane Dennis. The following activities have been completed or are in progress toward that goal:

USGS
September 10, 1999

While Hurricane Dennis is little more than a soggy memory, scientists from the U.S. Geological Survey (USGS) are hard at work trying to understand how the storm changed the landscape of beaches along the Virginia and Carolina coasts.

USGS
August 27, 1999

USGS scientists, managers and experts from a diverse spectrum of scientific disciplines are on high alert Friday as Hurricane Dennis seems poised to make landfall along the southeastern coast of the United States sometime this weekend.

USGS
March 29, 1999

The mysterious brain disease responsible for the deaths of bald eagles and American coots in Arkansas has now been found in two species of ducks discovered dead at Woodlake, North Carolina, and in bald eagles and coots from three other southeastern states.

USGS
March 2, 1999

From the large, open-air pens where they have spent the past two weeks, eight young whooping cranes survey their surroundings. The rural, central Florida landscape of open prairie, brush, and marshlands stretches away as far as the birds can see, though only a few tens of miles separate the Kissimmee release site from the metropolitan sprawl of Orlando.

Follow Region 2 activities on social media, get contact information for Region 2 USGS centers, and meet Region 2's staff and center directors.