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: 366
Date published: August 2, 2018
Status: Active

Integrating Science and Management for Optimal Prevention and Control of Invasive Nymphoides in Florida

Two invasive species of floating hearts, Nymphoides cristata and N. indica, are actively managed in Florida. A rare native species, N. humboldtiana, has been found in Florida and verified by molecular methods; this species is nearly indistinguishable from N. indica.

Date published: August 1, 2018
Status: Active

Piedmont Geology Along the Southeastern Fall Zone, Virginia and North Carolina

This task within the USGS NCGMP Piedmont-Blue Ridge Project aims to fill the void in geologic map coverage along the Fall Zone in southeastern Virginia and northeastern North Carolina, and forge strong cooperative ties within the NCGMP by combining resources across all three Program components by supporting DMME and NCGS STATEMAP and UNC–W EDMAP components with targeted geologic mapping and...

Contacts: Mark W Carter
Date published: August 1, 2018
Status: Active

Wetland Forest Regeneration Dynamics and Productivity in Southeastern Cypress Swamp Ecosystems

Relict forests (i.e., forests unable to reestablish after disturbance) may develop in the southeastern U.S. in future predicted extreme climates of temperature, flooding, and drought, according to the International Panel on Climate Change.

Date published: July 23, 2018
Status: Active

Toro Negro, Puerto Rico

The USGS has installed instruments in a steep hillside northwest of the municipality of Villalba in the Toro Negro State Forest.

Contacts: Ben Mirus
Date published: July 23, 2018
Status: Active

Utuado, Puerto Rico

The USGS has installed instruments in a steep hillside east of the municipality of Utuado.

Contacts: Ben Mirus
Date published: July 19, 2018
Status: Active

Appalachian Basin Oil and Gas Assessments

The USGS has conducted numerous assessments of undiscovered oil and gas in the Appalachian Basin, including studies of the Marcellus Shale. The region extends from Alabama to Maine. The following is an overview of the assessments.

    Date published: July 18, 2018
    Status: Active

    Flood-Inundation mapping in Georgia, North and South Carolina

    The U.S. Geological Survey (USGS) has created flood-inundation maps for selected streamgage sites in Georgia, North and South Carolina. These maps depict the approximate area that would be inundated at selected water levels, ranging from approximately top-of-bank to the maximum observed water level. The inundated areas depicted on these maps are approximate, and accuracy of the maps is a...

    Date published: July 12, 2018
    Status: Active

    River WebCams of the South Atlantic Water Science Center (Georgia, North and South Carolina)

    We have installed webcams at a number of locations in Georgia, North Carolina, and South Carolina to allow you to view, in real time, the current river-stage conditions. The Georgia and South Carolina cameras allow users to temporarily control the tilt, pan, and zoom. During periods of flooding, the South Atlantic Water Science Center might take control of the camera.

    Date published: June 19, 2018
    Status: Active

    Mineral Resource Assessment of U.S. Territories of the Caribbean Basin Archipelago including Puerto Rico, U.S. Virgin Islands and Adjacent Areas

    Project objectives are to develop a modern probabilistic quantitative mineral resource assessment of Puerto Rico, U.S. Virgin Islands and adjacent geologically similar areas that examines the potential for minerals-based economic development and trade within the region.

    Contacts: Floyd Gray
    Date published: June 14, 2018
    Status: Completed

    Hurricane Matthew: Flood Resources and Tools

    During and after Hurricane Matthew, the USGS made flood-flow measurements, maintained streamgages, deployed over 390 instruments, and developed geospatial products to measure and communicate the extent of coastal and inland flooding.

    Date published: June 11, 2018
    Status: Active

    Past and Future Modeling of Ecological Indicators for the South Atlantic Landscape Conservation Cooperative

    The South Atlantic Landscape Conservation Cooperative (LCC) has developed a Conservation Blueprint: a “living spatial plan to conserve natural and cultural resources for future generations.” This blueprint is a data-driven plan based on terrestrial, freshwater, marine, and cross-ecosystem indicators to measure the overall health of South...

    Date published: June 8, 2018
    Status: Active

    Geographic Information System and Remote Sensing Support: Gulf Coast Joint Venture

    The Gulf Coast Joint Venture (GCJV) was established in 1988 as a result of the North American Waterfowl Management Plan, which espouses the restoration of continental waterfowl populations through conservation partnerships in priority habitat regions. Since that time GCJV partners have expanded their mission and purpose to include the provision of habitat to support other priority bird species...

    Filter Total Items: 5,187
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    Year Published: 2020

    The utility of zooarchaeological data to guide listing efforts for an imperiled mussel species (Bivalvia: Unionidae: Pleurobema riddellii)

    The status of species in freshwater systems shift over time due to natural and anthropogenic causes. Determining the magnitude and cause of these shifts requires a long‐term perspective. This process is complicated when there are also questions about the taxonomic validity of a species. Addressing these issues is important because both can...

    Randklev, Charles R.; Wolverton, Steve; Johnson, Nathan; Smith, Chase H.; DuBose, Traci; Robertson, Clint; Conley, Julian

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    Year Published: 2020

    A new species of freshwater mussel in the genus Popenaias Frierson, 1927, from the Gulf coastal rivers of central Mexico (Bivalvia: Unionida: Unionidae) with comments on the genus

    The Gulf coastal drainages of central Mexico are a faunal transition zone between North and South America and harbor a unique assemblage of freshwater mussels (Bivalvia: Unionida). However, little information is available regarding the taxonomy, distribution, and evolutionary history of the Mexican mussel fauna due to limited sampling over the...

    Inoue, Kentaro; Cummings, Kevin S.; Tiemann, Jeremy S.; Miller, Thomas D.; Johnson, Nathan; Smith, Chase H.; Randklev, Charles R.

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    Year Published: 2020

    Salinity, water level, and forest structure contribute to baldcypress (Taxodium distichum) rhizosphere and endosphere community structure

    As rising sea levels alter coastal ecosystems, there is a pressing need to examine the effects of saltwater intrusion on coastal communities. Using 16S Illumina profiling, we characterized the communities of baldcypress tree (Taxodium distichum) root endosphere and rhizosphere soil bacteria. Our study utilized established sites along salinity and...

    Lumibao, Candice Y; Kimbrough, Elizabeth; Formel, Steven; Day, Richard; From, Andrew; Conner, William H.; Krauss, Ken; Van Bael, Sunshine A

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    Year Published: 2020

    A comparative phylogeographic approach to facilitate recovery of an imperiled freshwater mussel (Bivalvia: Unionida: Potamilus inflatus)

    North American freshwaters are among the world’s most threatened ecosystems, and freshwater mussels are among the most imperiled inhabiting these systems. A critical aspect of conservation biology is delineating patterns of genetic diversity, which can be difficult when a taxon has been extirpated from a significant portion of its historical range...

    Smith, Chase H.; Johnson, Nathan

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    Year Published: 2020

    Comparative phylogenomics reveal complex evolution of life history strategies in a clade of bivalves with parasitic larvae (Bivalvia: Unionoida: Ambleminae)

    Freshwater mussels are a species‐rich group with biodiversity patterns strongly shaped by a life history strategy that includes an obligate parasitic larval stage. In this study, we set out to reconstruct the life history evolution and systematics in a clade of freshwater mussels adapted to parasitizing a molluscivorous host fish. Anchored hybrid...

    Smith, Chase H.; Pfeiffer, John M.; Johnson, Nathan

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    Year Published: 2020

    Hydrologic signals and surprises in U.S. streamflow records during urbanization

    Urban development has been observed to lead to variable magnitudes of change for stormflow volume and directions of baseflow change across cities. This work examines temporal streamflow trends across the flow duration curve in 53 watersheds during periods of peak urban development, which ranged from 1939 to 2016. We used U.S. Geological Survey...

    Bhaskar, Aditi S.; Hopkins, Kristina G.; Smith, Brianne K; Stephens, Tim A; Miller, Andy J

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    Year Published: 2020

    Preserving connectivity under climate and land-use change: No one-size-fits-all approach for focal species in similar habitats

    Habitat connectivity is essential for maintaining populations of wildlife species, especially as climate changes. Knowledge about the fate of existing habitat networks in a changing climate and in light of land-use change is critical for determining which types of conservation actions must be taken to maintain those networks. However, information...

    Costanza, Jennifer K.; Watling, James I.; Sutherland, Ron; Belyea, Curtis; Dilkina, Bistra; Cayton, Heather; Bucklin, David N.; Romanach, Stephanie; Haddad, Nick M.

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    Year Published: 2020

    Acidification in the U.S. Southeast: Causes, potential consequences and the role of the Southeast Ocean and Coastal Acidification Network

    Coastal acidification in southeastern U.S. estuaries and coastal waters is influenced by biological activity, run-off from the land, and increasing carbon dioxide in the atmosphere. Acidification can negatively impact coastal resources such as shellfish, finfish, and coral reefs, and the communities that rely on them. Organismal responses for...

    Hall, Emily R.; Wickes, Leslie; Burnett, Louis; Scott, Geoffrey I.; Hernandez, Debra; Yates, Kimberly K.; Barbero, Leticia; Reimer, Janet J.; Baalousha, Mohammed; Mintz, Jennifer; Cai, Wei-Jun; Craig, J. Kevin; DeVoe, M. Richard; Fisher, William S.; Hathaway, Terri K.; Jewett, Elizabeth B.; Johnson, Zackary; Keener, Paula; Mordecai, Rua S.; Noakes, Scott; Phillips, Charlie; Sandifer, Paul; Schnetzer, Astrid; Styron, Jay

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    Year Published: 2020

    Using NASA Earth observations and Google Earth Engine to map winter cover crop conservation performance in the Chesapeake Bay watershed

    Winter cover crops such as barley, rye, and wheat help to improve soil structure by increasing porosity, aggregate stability, and organic matter, while reducing the loss of agricultural nutrients and sediments into waterways. The environmental performance of cover crops is affected by choice of species, planting date, planting method, nutrient...

    Thieme, Alison; Yadav, Sunita; Oddo, Perry C.; Fitz, John M.; McCartney, Sean; King, LeeAnn; Keppler, Jason; McCarty, Gregory W.; Hively, W. Dean

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    Year Published: 2020

    Effects of stormwater runoff from selected bridge decks on conditions of water, sediment, and biological quality in receiving waters in South Carolina, 2013 to 2018

    The U.S. Geological Survey, in cooperation with the South Carolina Department of Transportation, investigated the effects of stormwater runoff from bridge decks on stream water quality conditions in South Carolina. The investigation assessed 5 bridges in 3 physiographic provinces in South Carolina (Piedmont, Upper Coastal Plain, and Lower Coast...

    Journey, Celeste A.; Petkewich, Matthew; Conlon, Kevin J.; Caldwell, Andral W.; Clark, Jimmy M.; Riley, Jeffrey W.; Bradley, Paul M.
    Journey, C.A., Petkewich, M.D., Conlon, K.J., Caldwell, A.W., Clark, J.M., Riley, J.W., and Bradley, P.M., 2020, Effects of stormwater runoff from selected bridge decks on conditions of water, sediment, and biological quality in receiving waters in South Carolina, 2013 to 2018: U.S. Geological Survey Scientific Investigations Report 2020–5046, 101 p., https://doi.org/10.3133/sir20205046.

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    Year Published: 2020

    Beloniformes: Belonidae (Needlefishes) and Hemiramphidae (Halfbeaks)

    The order Beloniformes (or Synentognathi) contains two suborders, six families, 37 genera, and about 235 species of atherinomorph fishes (Rosen & Parenti 1981; Collette et al. 1984; Collette 2004). Features common to these fishes include dorsal and anal fins on the rear half of the body, abdominal pelvic fins with six soft rays, no fin spines...

    Bruce B. Collette; Walsh, Stephen
    Collette, B.B., and Walsh, S.J., 2020, Beloniformes: Belonidae (Needlefishes) and Hemiramphidae (Halfbeaks), Chapter 26, in Warren, M.L., Jr., and Burr, B.M., eds., Freshwater Fishes of North America, v. 2: Characidae to Poeciliidae, p. 449-462: Johns Hopkins University Press, https://jhupbooks.press.jhu.edu/title/freshwater-fishes-north-america/table-of-contents.

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    Year Published: 2020

    Continuous stream discharge, salinity, and associated data collected in the Lower St. Johns River and its tributaries, Florida, 2018

    The U.S. Army Corps of Engineers, Jacksonville District, plans to deepen the St. Johns River channel in Jacksonville, Florida, from 40 to 47 feet along 13 miles of the river channel, beginning at the mouth of the river at the Atlantic Ocean, in order to accommodate larger, fully loaded cargo vessels. The U.S. Geological Survey, in cooperation with...

    Ryan, Patrick J.
    Ryan, P.J., 2020, Continuous stream discharge, salinity, and associated data collected in the Lower St. Johns River and its tributaries, Florida, 2018: U.S. Geological Survey Open-File Report 2020–1061, 34 p., https://doi.org/10.3133/ofr20201061.

    Filter Total Items: 500
    A hydrographer kneels in water to measure a high water mark on a wall.
    September 18, 2018

    Measuring a high water mark as flooding recedes

    USGS hydrographer Kyle Marchman measures a high water mark on the rear wall of a Kangaroo gas station on Highway 24 north of Fayetteville, NC on Sept. 18, 2018, after flooding caused by Hurricane Florence.

    USGS intern James Stonecypher measures Lumber River floodwaters
    September 17, 2018

    Measuring the Lumber River floodwaters

    James Stonecypher measures flood waters from the Lumber River that breached a dam in Lumberton, North Carolina after the passage of Hurricane Florence, Sept. 17, 2018. 

    Map of USGS streamgages at or over flood stage in NC Sept. 19, 2018
    September 16, 2018

    As Florence rains, rivers keep rising, submerging some USGS instrument

    A WaterWatch web map shows streamgages in North and South Carolina that approached or exceeded major flood stage EST on September 19, 2018, as the former Hurricane Florence, now downgraded to a tropical depression, deluged the states with rain.

    USGS scientist takes measurement in a flooded NC creek
    September 16, 2018

    Working to keep vital flood information flowing in the Carolinas

    David Stillwell, USGS hydrologic technician, performs a discharge measurement to help document and forecast flooding caused by Hurricane Florence at Long Creek in Rhyne, North Carolina on Sept. 16. 


    Image shows a USGS storm tide sensor attached to a pier
    September 10, 2018

    USGS Storm-Tide Sensor for Hurricane Florence

    A USGS storm-tide sensor, deployed in advance of Hurricane Florence's landfall. The sensors are housed in vented steel pipes a few inches wide and about a foot long. They are being installed on bridges, piers, and other structures that have a good chance of surviving the storm.

    The information the sensors collect will help define the depth and duration of a storm

    Image shows USGS scientists in PFDs collecting a seismic airgun while at sea
    September 6, 2018

    Retrieving Seismic Airguns

    USGS personnel on the deck of the R/V Hugh R. Sharp during retrieval of seismic airguns.  The streamer that receives the seismic signals generated by the airguns is towed behind the ship and is here shown

    A coral worn smooth with a badly eroded base
    August 28, 2018

    Erosion has taken a toll on this Keys coral

    A reef in the Florida Keys National Marine Sanctuary with little living coral and extensive bioerosion. Photo taken under research permit number FKNMS-2016-085-A1. Credit: USGS, Ilsa Kuffner.

    Two divers use a tripod and drill to take a coral core
    August 21, 2018

    USGS scientists drill a coral core in the Florida Keys

    Research Oceanographer Lauren Toth and student volunteer Liz Whitcher drill a coral-reef core from a reef off Key West, Florida, in the Florida Keys National Marine Sanctuary. Photo taken under research permit FKNMS-2015-058. Credit: Anastasios Stathakopoulos, USGS.

    A coral worn smooth by erosion
    June 26, 2018

    Like many Keys corals, this one has no new growth

    A modern coral reef in Dry Tortugas National Park. There is little living coral and high rates of bioerosion. Photo taken under research permit number DRTO-2018-SCI-0005. Credit: Lauren Toth, USGS

    1985-2018 Lion fish invasion. Ecosystems Mission Area. Wetlands and Aquatic Research Center
    May 16, 2018

    1985-2018 Lionfish Invasion

    Lionfish invasion (1985-2018). Lionfish invaded US Atlantic coastal waters, the Caribbean Sea, and the Gulf of Mexico with unprecedented, alarming speed. Though reports of sightings date back to the 1980s, it is only recently that the species has exploded in numbers and range. In fact, the lionfish invasion is the 

    USGS staff uses a radio to determine if an Acoustic Backscatter sensor (white circle) is still operating
    April 25, 2018

    Can you hear me now?

    Steve Suttles (USGS) uses a radio to determine if an Acoustic Backscatter sensor (white circle) is still operating at the end of the deployment.

    Filter Total Items: 392
    USGS science for a changing world logo
    October 28, 2015

    Alligators and the Everglades go hand-in-hand, and as water conditions change in the greater Everglades ecosystem, gators are one of the key species that could be affected.

    USGS science for a changing world logo
    October 22, 2015

    During the historic October 2015 floods in South Carolina, 17 U.S. Geological Survey streamgages recorded the highest peak streamflow and/or river height (or stage) since those streamgages were installed. An additional 15 USGS streamgages recorded peaks in the top 5 for their periods of record.

    Image: USGS Scientist Inspects Streamgage During Flooding Event
    October 5, 2015

    Heavy rains and hazardous weather conditions are occurring in western South Carolina, with record flooding occurring and more expected over parts of the region over the next several days.

    Screenshot of portal entry page
    October 2, 2015

    As the path of Hurricane Joaquin continues to move farther offshore, making landfall in the U.S. less likely, U.S. Geological Survey coastal change experts say there’s still a high probability of dune erosion along parts of the Atlantic coast, from the North Carolina Outer Banks to Cape Cod.

    October 2, 2015

    Currently, heavy rains and hazardous weather conditions are predicted for western North Carolina and most of South Carolina by the National Weather Service, with flooding possible over parts of the region over the next several days.

    1940 legacy topographic map quadrangle of the Spring Creek area
    September 16, 2015

    Recently released US Topo maps for Florida now feature more trails using data provided by the U.S. Forest Service as well as trail information from other federal, state and private sources.

    Image: USGS Documents 2015 Drought
    September 8, 2015

    U.S. Geological Survey hydrologic technicians are currently taking measurements from hundreds of streams and rivers across the western United States as part of a low flow study.

    Image: Snakehead Fish
    September 1, 2015

    Scientists use the word “anthropogenic” in referring to environmental change caused or influenced by people, either directly or indirectly.

    Graph: Peak ground-motion variability for a magnitude 7.7 earthquake
    July 30, 2015

    Computer simulations of earthquake shaking, replicating the quakes that occurred in 1811-1812 in the New Madrid seismic zone (NMSZ), indicate that future large earthquakes there would produce major, prolonged ground shaking.

    Image: Giant African Land Snail
    July 9, 2015

    The invasive giant African land snail is expanding its range in Miami, and with it, the range of the parasitic rat lungworm, according to new U.S. Geological Survey led research.

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

    Filter Total Items: 283