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: 365
Date published: November 30, 2018
Status: Completed

Black Warrior Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Black Warrior Basin Province 5065.

Date published: November 30, 2018
Status: Active

Illinois Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the  Illinois Basin Province 5064.

    Date published: November 29, 2018
    Status: Active

    Gulf Coast Petroleum Systems Project - Research

    This site highlights the research on the processes that impact the formation, accumulation, occurrence, and alteration of hydrocarbon energy resources of the Gulf Coast of Mexico. The project also conducts assessments of undiscovered, technically recoverable hydrocarbon resources. The Gulf Coast Petroleum Systems Project focuses on the onshore and State waters portion of the Gulf Coast basin,...

    Date published: November 28, 2018
    Status: Active

    Natural Drought and Flood Histories from Lacustrine Archives

    Previous work performed as part of the USGS Holocene Synthesis project illuminated complex centennial-scale patterns of drought and wetter-than-average conditions across the North American continent interior during the past two millennia, where paleorecord data coverage is sparse.  In order to explain the patterns of naturally-occurring drought, floods, and storms for the past, identified by...

    Date published: November 27, 2018
    Status: Completed

    Understanding Drivers of Cyanotoxin Production in the Lake Okeechobee Waterway

    The U.S. Geological Survey (USGS) and other researchers combined field and laboratory approaches in two studies to understand the factors that drive cyanobacterial bloom development and associated cyanotoxin production in Lake Okeechobee, the St. Lucie River and Estuary, and the Indian River Lagoon in response to the large-scale Lake Okeechobee cyanobacteria bloom in 2016.

    Date published: November 12, 2018
    Status: Active

    Geological Investigations of the Neogene

    More than a third of the United States population lives in counties directly on the shoreline, making them vulnerable to hazards associated with changing sea level and storm surges associated with hurricanes and severe storms. The geologic record contains many examples of past intervals of warm climate and high sea level. "Geological Investigation of the Neogene" is examining proxy records of...

    Date published: November 1, 2018
    Status: Active

    Using Molecular Tools to Recalibrate Freshwater Mussel Taxonomy with a Focus on Imperiled Species

    Freshwater mussels of the family Unionidae, also known as naiads, pearly mussels, freshwater clams, or unionids, are a diverse group of bivalve mollusks that are distributed on every continent except Antarctica. Approximately 300 species are known from the United States, with most of this diversity residing in rivers of the Southeast where many endemic taxa have evolved.

    Date published: October 26, 2018
    Status: Active

    Blue Ridge and Inner Piedmont Geologic Mapping

    The Blue Ridge and Inner Piedmont Geologic Mapping Task (BRIP) is the western focus of geologic mapping and framework studies of the Piedmont and Blue Ridge Project. BRIP will conduct modern geologic mapping and geologic framework studies in the Wytheville, Hickory and Boone 30x60-min. sheets. Collectively, the objectives of BRIP are to (1) characterize the geologic framework of the Blue Ridge...

    Contacts: Arthur Merschat
    Date published: October 23, 2018
    Status: Completed

    Fine-scale Benthic Habitat Mapping

    Both ATRIS configurations was deployed in Dry Tortugas National Park (DRTO) to fill information gaps in the spatial coverage of existing habitat maps.

    Date published: October 11, 2018
    Status: Active

    Sea Level Rise and Climate: Impacts on the Greater Everglades Ecosystem and Restoration

    The Greater Everglades Ecosystem covers much of south Florida, and the highest areas are only a few meters above sea level.  Predictions of sea level rise and changes in storm intensity for the 21st century are particularly concerning to the urban population of Miami and the east coast, but also represent a challenge to Everglades National Park and Biscayne National Park resource...

    Date published: October 5, 2018
    Status: Active

    Coral Reef Ecosystem Studies (CREST)

    The specific objectives of this project are to identify and describe the processes that are important in determining rates of coral-reef construction. How quickly the skeletons of calcifying organisms accumulate to form massive barrier-reef structure is determined by processes of both construction (how fast organisms grow and reproduce) and destruction (how fast reefs break down by mechanical...

    Date published: September 27, 2018
    Status: Active

    Piedmont and Blue Ridge Project

    The Piedmont and Blue Ridge Project is a geologic mapping project supported by the USGS National Cooperative Geologic Mapping Program. The Piedmont Blue Ridge Project aims to understand the geologic framework and tectonic evolution of terranes and basins in the Appalachian Piedmont and Blue Ridge, and their significance for water, mineral and energy resources, natural hazards, and engineering/...

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    Year Published: 2021

    National-scale reservoir thermal energy storage pre-assessment for the United States

    The U.S. Geological Survey is performing a pre-assessment of the cooling potential for reservoir thermal energy storage (RTES) in five generalized geologic regions (Basin and Range, Coastal Plains, Illinois Basin, Michigan Basin, Pacific Northwest) across the United States. Reservoir models are developed for the metropolitan areas of eight cities...

    Pepin, Jeff D.; Burns, Erick; Dickinson, Jesse E.; Duncan, Leslie L.; Kuniansky, Eve L.; Reeves, Howard W.

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    Year Published: 2021

    Tropicalization of temperate ecosystems in North America: The northward range expansion of tropical organisms in response to warming winter temperatures

    Tropicalization is a term used to describe the transformation of temperate ecosystems by poleward‐moving tropical organisms in response to warming temperatures. In North America, decreases in the frequency and intensity of extreme winter cold events are expected to allow the poleward range expansion of many cold‐sensitive tropical organisms,...

    Osland, Michael; Stevens, Philip; Lamont, Margaret; Brusca, Richard; Hart, Kristen; Waddle, Hardin; Langtimm, Catherine; Williams, Caroline; Keim, Barry; Terando, Adam; Reyier, Eric; Marshall, Katie; Loik, Michael E.; Boucek, Ross; Lewis, Amanda; Seminoff, Jeffrey A.

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    Year Published: 2021

    Feral swine as sources of fecal contamination in recreational waters

    Recreational waters are primary attractions at many national and state parks where feral swine populations are established, and thus are possible hotspots for visitor exposure to feral swine contaminants. Microbial source tracking (MST) was used to determine spatial and temporal patterns of fecal contamination in Congaree National Park (CONG) in...

    McKee, Anna M.; Bradley, Paul; Shelley, David; McCarthy, Shea; Molina, Marirosa

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    Year Published: 2021

    Retreat, detour or advance? Understanding the movements of birds confronting the Gulf of Mexico

    During migration, birds must locate stopover habitats that provide sufficient resources to rest and refuel while en route to the breeding or non-breeding area. Long-distance migrants invariably encounter inhospitable geographic features, the edges of which are often characterized by habitat limited in food and safety. In response, they often...

    Zenzal, Theodore J.; Ward, Michael P.; Diehl, Robert H.; Buler, Jeffrey J.; Smolinsky, Jaclyn (Contractor) Ann; Deppe, Jill L.; Bolus, Rachel T; Celis-Murillo, Antonio; Moore, Frank R.

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    Year Published: 2021

    Documentation of methods and inventory of irrigation information collected for the 2015 U.S. Geological Survey estimated use of water in the United States

    The U.S. Geological Survey (USGS) National Water-Use Science Project strives to report water-use estimates using the best available information for the period of the estimates. The information available on water used for irrigation activities varies from State to State and in some areas from county to county within a State, which results in many...

    Painter, Jaime A.; Brandt, Justin T.; Caldwell, Rodney R.; Haynes, Jonathan V.; Read, Amy L.
    Painter, J.A., Brandt, J.T., Caldwell, R.R., Haynes, J.V., and Read, A.L., 2021, Documentation of methods and inventory of irrigation information collected for the 2015 U.S. Geological Survey estimated use of water in the United States: U.S. Geological Survey Scientific Investigations Report 2020–5139, 39 p., https://doi.org/10.3133/sir20205139.

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    Year Published: 2021

    The role of habitat heterogeneity and canyon processes in structuring sediment macrofaunal communities associated with hard substrate habitats in Norfolk Canyon, USA

    Topographic and hydrodynamic complexity in submarine canyons promotes steep gradients in food availability and geophysical parameters which affect ecological assemblages and beta diversity. While habitat heterogeneity in submarine canyons is known to support diverse and abundant megafaunal communities, due to difficulty in sampling little is known...

    Bourque, Jill; Demopoulos, Amanda; Robertson, Craig M.; Mienis, Furu

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    Year Published: 2021

    Machine-learning predictions of redox conditions in groundwater in the Mississippi River Valley alluvial and Claiborne aquifers, south-central United States

    Machine-learning models developed by the U.S. Geological Survey were used to predict iron concentrations and the probability of dissolved oxygen (DO) concentrations exceeding a threshold of 1 milligram per liter (mg/L) in groundwater in aquifers of the Mississippi embayment physiographic region. DO and iron concentrations are driven by and reflect...

    Knierim, Katherine J.; Kingsbury, James A.; Haugh, Connor J.
    Knierim, K.J., Kingsbury, J.A., and Haugh, C.J., 2021, Machine-learning predictions of redox conditions in groundwater in the Mississippi River Valley alluvial and Claiborne aquifers, south-central United States: U.S. Geological Survey Scientific Investigations Map 3468, 16 p., 3 sheets, https://doi.org/10.3133/sim3468.

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    Year Published: 2021

    Observations of acrobat ants (Crematogaster sp.) preying on the eggs of the invasive giant applesnail (Pomacea maculata)

    Herein we provide direct evidence for the consumption of Pomacea maculata (Giant Applesnail) eggs by ants in the genus Crematogaster. The observations were made during removal of snail egg masses at the Hudson Woods Unit of the Texas Mid-Coast National Wildlife Refuge, TX. We observed acrobat ants (Crematogaster sp.) removing...

    Carter, Jacoby; Wilson, Jennifer; Mopper, Susan

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    Year Published: 2021

    Microbial and viral indicators of pathogens and human health risks from recreational exposure to waters impaired by fecal contamination

    Fecal indicator bacteria (FIB) (e.g., fecal coliforms, Escherichia coli, and enterococci) have been used for decades to monitor for and protect the public from waterborne pathogens from fecal contamination. However, FIB may not perform well at predicting the presence of waterborne pathogens or human health outcomes from recreational...

    McKee, Anna M.; Cruz, Marcella A.

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    Year Published: 2021

    A Tennessee Warbler (Leiothlypis peregrina) captured in the web of a golden silk orb-weaver (Trichonephila clavipes)

    During migration, transient birds usually find themselves stopping in unfamiliar habitats in order to rest and refuel before resuming migratory flight. Here we document the first case, to our knowledge, of a Tennessee Warbler (Leiothlypis peregrina) entrapped in a spiderweb. The warbler's tarsus became caught in the mooring thread of a golden silk...

    Zenzal, Theodore J.; Calderon, Liliana; Lefever, Joshua; Weber, Vincent

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    Year Published: 2021

    Multi-region assessment of chemical mixture exposures and predicted cumulative effects in USA wadeable urban/agriculture-gradient streams

    Chemical-contaminant mixtures are widely reported in large stream reaches in urban/agriculture-developed watersheds, but mixture compositions and aggregate biological effects are less well understood in corresponding smaller headwaters, which comprise most of stream length, riparian connectivity, and spatial biodiversity. During 2014–2017,...

    Bradley, Paul; Journey, Celeste A.; Romanok, Kristin; Breitmeyer, Sara; Button, Daniel T.; Carlisle, Daren M.; Huffman, Bradley; Mahler, Barbara; Nowell, Lisa H.; Qi, Sharon L.; Smalling, Kelly; Waite, Ian R.; Van Metre, Peter C.
    Attribution: California Water Science Center, Colorado Water Science Center, Maryland-Delaware-D.C. Water Science Center, New Jersey Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC), Water Resources, Region 1: North Atlantic-Appalachian, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Region 3: Great Lakes, Region 4: Mississippi Basin, Region 5: Missouri Basin, Region 6: Arkansas-Rio Grande-Texas-Gulf, Region 7: Upper Colorado Basin, Region 8: Lower Colorado Basin, Region 9: Columbia-Pacific Northwest, Region 10: California-Great Basin, Region 11: Alaska, Region 12: Pacific Islands (American Samoa, Hawaii, Guam, Commonwealth of the Northern Mariana Islands)

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    Year Published: 2021

    Divergent species‐specific impacts of whole ecosystem warming and elevated CO2 on vegetation water relations in an ombrotrophic peatland

    Boreal peatland forests have relatively low species diversity and thus impacts of climate change on one or more dominant species could shift ecosystem function. Despite abundant soil water availability, shallowly rooted vascular plants within peatlands may not be able to meet foliar demand for water under drought or heat events that increase vapor...

    Warren, Jeffrey M .; Jensen, Anna M; Ward, Eric; Guha, Anirban; Childs, Joanne; Wullschleger, Stan D.; Hanson, Paul J

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    Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
    November 8, 2018

    Isla Verde Video Camera 1 Dark Image

    Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

    Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
    November 8, 2018

    Isla Verde Video Camera 2 Dark Image

    Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

    Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
    November 8, 2018

    Isla Verde Video Camera 3 Dark Image

    Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

    Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
    November 8, 2018

    Isla Verde Video Camera 4 Dark Image

    Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

    Time exposure image shows a beach with palm trees and a blurry area where waves were breaking, over a 10-minute period.
    November 8, 2018

    Isla Verde Video Camera 1 Timex

    Time exposure image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image represents a time-averaged image from 10 minutes of video.

    Time exposure image shows a beach with a blurry area where waves were breaking, over a 10-minute period.
    November 8, 2018

    Isla Verde Video Camera 4 Timex

    Time-exposure image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is time-averaged over 10 minutes of video.

    Dark image from a video camera shooting for 10 minutes, shows a beach and where varying degrees of movement happened.
    November 8, 2018

    Isla Verde Video Camera 1 Variance Image

    Variance image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and shows areas of more movement as brighter colors.

    A man stands near cameras mounted on a pole, on top of a building, with a beach in the background.
    November 6, 2018

    Video camera setup at Isla Verde

    Shawn Harrison stands near video cameras on top of a building overlooking Isla Verde in San Juan, Puerto Rico. The cameras measure wave run-up and flooding as part of a study in response to Hurricane Irma and Hurricane Maria.

    View from atop a building looks down on a sandy beach with a rainbow, palm tree just below view, and buildings in distance.
    November 5, 2018

    Isla Verde, San Juan, Puerto Rico

    The urban reef at Isla Verde supports various species of protected corals, sea turtles, and crustaceans, as well as many Caribbean fish. It also protects the International Airport and numerous homes and resorts on the coast.

    A broken foundation where the Cape San Blas house stood
    November 4, 2018

    A broken slab is all that's left of Fish Inn after Hurricane Michael

    A broken concrete foundation and some shattered floor tiles were all that remained of the sea turtle researchers' field station and home base after Category Four Hurricane Michael struck Cape San Blas on Oct. 10, 2018.

    Shallow, underwater photo of a reef with various species of corals growing on the rocky substrate.
    November 1, 2018

    Wave-tide gauge off San Juan

    A wave-tide gauge, pictured here on a coral reef among sea rods, brain corals, and sea fans, is installed off Isla Verde in San Juan, Puerto Rico.

    October 24, 2018

    Image of the Week - Hurricane Michael

    Hurricane Michael made landfall in the Florida Panhandle on October 10, 2018.

    Landsat 7 images captured before and after highlight the destructive path of the Category 4 storm.

    Mexico Beach was all but demolished, with homes left in heaps by wind and storm surge. The green leaves that pop in the September image are stripped from trees by October, and the dull

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    Photo of a young girl drinking water, which likely originated from groundwater sources. 
    January 19, 2017

    A regional assessment of untreated groundwater in the combined Valley and Ridge and Piedmont and Blue Ridge aquifers in the eastern United States is now available from the U.S. Geological Survey.

    Photo of a young girl drinking water, which likely originated from groundwater sources. 
    January 19, 2017

    A regional assessment of untreated groundwater in the Coastal Lowlands aquifer system in the southeastern United States is now available from the U.S. Geological Survey.

    Photo of a young girl drinking water, which likely originated from groundwater sources. 
    January 19, 2017

    A regional assessment of untreated groundwater in the Northern Atlantic Coastal Plain aquifer system in the eastern United States is now available from the U.S. Geological Survey.

    Vilano Beach, Florida before and after Hurricane Matthew
    October 31, 2016

    New low-altitude aerial photos of Southeastern beaches taken before and after Hurricane Matthew passed offshore show a new storm-cut inlet, and roads, dunes and structures lost.

    Hydrologic technician Samantha Kephart.points out a high water mark
    October 21, 2016

    The heavy rains and storm surge Hurricane Matthew produced caused severe flooding in many parts of the south east, resulting in almost 40 peak flood records. As the flood waters continue to recede from some affected areas, the U. S. Geological Survey will continue its efforts to record this historic flooding. Click here to learn more about the work the USGS has completed for Hurricane Matthew.

    Hurricane Matthew satellite image that shows the large storm approaching the coastline of Florida.
    October 6, 2016

    USGS is engaged in research, monitoring, sampling and coastal change forecasting associated with Hurricane Matthew from Florida north up into Virginia.

    To learn about storm sensors and see their location, explore the USGS Coastal Change Hazard Portal, or see satellite imagery before and after the storm, visit the USGS Hurricane Matthew page.

    USGS
    October 6, 2016

    As the east coast prepares for Hurricane Matthew's arrival, the U.S. Geological Survey uses advanced models to forecast the coastal impacts Matthew could bring. 

    Storm-tide sensor
    October 5, 2016

    Media interested in going out with USGS field crews deploying sensors please contact:

    Florida: Richard Kane, rkane@usgs.gov, 813-918-1275 

    Georgia: Brian McCallum, bemccall@usgs.gov, 678- 924-6672

    South Carolina: John Shelton, jmshelto@usgs.gov, 803-767-5542

    North Carolina: Jeanne Robbins, jrobbins@usgs.gov, 919-571-4017 

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

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