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: December 5, 2016
Status: Completed

WaterSMART: Apalachicola/Chattahoochee/ Flint River (ACF) Basin

The Challenge: The DOI WaterSMART (Sustain and Manage America’s Resources for Tomorrow) initiative is developing data and tools to help water managers identify current and future water shortages, for humans and for freshwater ecosystems. Fishes, for example, can decline in diversity and abundance when streamflow becomes too low, for too long.  However, ecologists find that effects of declining...

Date published: December 4, 2016
Status: Active

Biology, Impacts and Control of Invasive Reptiles in the Everglades

Invasive species are considered to be second only to habitat degradation in terms of negative impacts on the Earth’s ecosystems, and our scientists make up a significant proportion of the global expertise in the rapidly-growing problem of invasive reptiles.

Date published: December 2, 2016
Status: Active

USGS Everglades Research Offices - Florida

The Daniel Beard Center in Everglades National Park provides the base for most of the field work done on the control of invasive reptiles by USGS Fort Collins Science Center staff. The team works in Everglades National Park, Big Cypress National Preserve, Crocodile Lake National Wildlife Refuge, and other parts of the Greater Everglades Ecosystem focusing on, among other species of concern,...

Date published: November 26, 2016
Status: Active

Drought Conditions in Puerto Rico

A drought is a period of drier-than-normal conditions that results in water-related problems. When rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth to water in wells increases. If...

Date published: November 9, 2016
Status: Active

Mid-Currituck Bridge Water Quality, Currituck Sound, North Carolina

The North Carolina Department of Transportation is planning to make transportation improvements in the Currituck Sound area by constructing a three-lane bridge from U.S. Highway 158 just south of Coinjock, North Carolina, to State Highway 12 on the Outer Banks just south of Corolla, North Carolina. From Aug 2011 to early 2018, the USGS will be collecting regular water-quality samples as well...

Date published: November 8, 2016
Status: Completed

Evaluation of Nutrients in Durham County, North Carolina, Urban Streams

Falls Lake and Jordan Lake are included in the North Carolina Division of Water Quality's 303(d) list of "impaired" waters due to violations of the State chlorophyll-a standard caused by excessive nutrient inputs. Scientific data are needed allocate resources to achieve nutrient reduction targets have been adopted for the Falls Lake and Jordan Lake watersheds for stormwater, as well as for...

Date published: November 8, 2016
Status: Archived

Papers, Posters, and Exhibits by U.S. Geological Survey Personnel at Georgia Water Resources Conferences

The Georgia Water Resources Institute (GWRI) is a non-profit organization with a mission to improve the science and practice of water resources planning and management in ways that balance quality of life, environmental sustainability, and economic growth. The GWRI hosts Georgia Water Resources Conferences every other year, and USGS...

Date published: November 7, 2016
Status: Active

Groundwater Monitoring Program for the Augusta–Richmond County Area, GA

Water supply in the Augusta–Richmond County, GA area is provided in part by three well fields that withdraw water from the Dublin–Midville aquifer system. 

The U.S. Geological Survey operates a groundwater and water-quality monitoring program to support water-management decisions and provide a basis for future groundwater modeling efforts while adding to regional characterization of...

Date published: November 7, 2016
Status: Active

Assessment of Water Availability and Streamflow Characteristics in the Gulf Coastal Plains and Ozarks (GCPO) Landscape Conservation Cooperative for Current and Future Climatic and Landscape Conditions

The objective of this research is to provide an automated methodology and data products to the GCPO LCC partners by (1) developing a multi-model synthesis to simulate streamflow using a monthly water balance model and daily time step hydrologic models (physical process-based and statistical) for all watersheds of the GCPO LCC geographic region and (2) providing products from these models (flow...

Date published: November 2, 2016
Status: Active

Amphibian Research and Monitoring Initiative (ARMI) - Southeast Region Water Quality

The U.S. Geological Survey's (USGS) Amphibian Research and Monitoring Initiative (ARMI) began in 2000 with the goal of determining the status and trends of amphibian populations throughout the U.S. The program was designed to provide information useful in determining causes of declines or other changes in population distributions.  Personnel in the South Atlantic Water Science Center are...

Date published: November 2, 2016

Flood Frequency Information

Reliable estimates of the magnitude and frequency of floods are essential for such things as the design of transportation and water-conveyance structures, flood insurance studies, and flood-plain management. Flood-frequency estimates are particularly important in densely populated urban areas. The U.S. Geological Survey (USGS) is using a multistate approach to update methods for determining...

Date published: November 1, 2016
Status: Completed

Fish Slam - Fall 2016

November 1 - 2, 2016 – Eight teams of fishery biologists from the US Geological Survey (USGS), US Fish and Wildlife Service - Peninsular Florida Fisheries Office and Welaka National Fish Hatchery (USFWS), the National Park Service (NPS), Florida Fish and Wildlife Conservation Commission (FWC), Florida International University (FIU), and Zoo Miami sampled 20 sites for non-native fishes in Palm...

Filter Total Items: 5,343
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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.

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Year Published: 2020

Methods to quality assure, plot, summarize, interpolate, and extend groundwater-level information—Examples for the Mississippi River Valley alluvial aquifer

Large-scale computational investigations of groundwater levels are proposed to accelerate science delivery through a workflow spanning database assembly, statistics, and information synthesis and packaging. A water-availability study of the Mississippi River alluvial plain, and particularly the Mississippi River Valley alluvial aquifer (MRVA), is...

Asquith, William H.; Seanor, Ronald C.; McGuire, Virginia L.; Kress, Wade

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Year Published: 2020

Space use and relative habitat selection for immature green turtles within a Caribbean marine protected area

Background A better understanding of sea turtle spatial ecology is critical for the continued conservation of imperiled sea turtles and their habitats. For resource managers to develop the most effective conservation strategies, it is especially important to examine how turtles use and select for habitats within their developmental foraging...

Griffin, Lucas P; Smith, Brian J.; Cherkiss, Michael; Crowder, Andrew; Pollock, Clayton G; Hillis-Starr, Zandy; Danylchuk, Andy J.; Hart, Kristen

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Year Published: 2020

Investigating the gene expression profiles of rehabilitated Florida manatees (Trichechus manatus latirostris) following red tide exposure

To investigate a Florida manatee (Trichechus manatus latirostris) mortality event following a red tide bloom in Southwest Florida, an RNA sequencing experiment was conducted. Gene expression changes in white blood cells were assessed in manatees rescued from a red tide affected area (n = 4) and a control group (n = 7) using RNA sequencing. The...

Lazensky, Rebecca; Hunter, Margaret; Amador, David M.; Al-Khedery, Basima; Yu, Fahong; Walsh, Cathy; Gitzendanner, Matthew A.; Tripp, Katie; Walsh, Mike; Denslow, Nancy D.

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Year Published: 2020

Imprint of regional oceanography on foraminifera of eastern Pacific Coral Reefs

The marginal marine environments of the eastern tropical Pacific (ETP) serve as an ideal natural laboratory to study how oceanographic and climatic variability influence coral-reef ecosystems. Reefs along the Pacific coast of Panamá span a natural gradient of nutrients, pH, and temperature as a result of stronger seasonal upwelling in the Gulf of...

Zamora-Duran, Angelica Maria; Aronson, Richard B.; Leichter, James J.; Flannery, Jennifer A.; Richey, Julie N.; Toth, Lauren T.

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Year Published: 2020

Mortality and cholinesterase inhibition in butterflies following aerial naled applications for mosquito control on the National Key Deer Refuge

Natural resource managers are concerned about the impacts of aerial ultra-low volume spray (ULV) of insecticides for mosquito control (i.e., mosquito adulticides) and seek science-driven management recommendations that reduce risk but allow vector control for nearby human populations. Managers at the National Key Deer Refuge (Florida Keys, FL) are...

Bargar, Timothy; Anderson, Chad; Sowers, Anthony

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Year Published: 2020

2023 Coastal master plan: Model improvement plan, ICM-wetlands, vegetation, and soil

As part of the model improvement effort for the 2023 Coastal Master Plan, the wetland processes captured by the morphology and vegetation models used during previous master plans were reevaluated to assess how Integrated Compartment Model (ICM) subroutines could be improved. This process considered technical reviews, comments, and suggested...

Baustian, Melissa M.; Reed, Denise; Visser, Jenneke; Duke-Sylvester, Scott M.; Snedden, Gregg; Wang, Hongqing; DeMarco, Kristin; Foster-Martinez, Madeline R.; Sharp, Leigh Anne; McGinnis, Tommy E.; Jarrell, Elizabeth

Filter Total Items: 497
Satellite images showing the seasons for the smoky mountains.
December 19, 2015

Beauty of Earth Science Revealed Within Great Smoky Mountains

Earth Science reminds us that the study of Earth and its biological processes can occur anywhere—whether we realize it or not. An easy way to appreciate science is illustrated in these images vividly portraying the life cycle of vegetation and displaying seasonal change at an area within the Great Smoky Mountains National Park along the Tennessee-North Carolina border.

Coral bleaching in the Florida Keys National Marine Sanctuary, October 2015 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
November 17, 2015

Coral bleaching in the Fl. Keys National Marine Sanctuary, Oct. 2015

Two colonies of the mustard hill coral, Porites astreoides, one apparently healthy (left) and one visibly bleached (right) during a coral-bleaching event at Hen and Chickens Sanctuary Preservation Area, Plantation Key, FL, USA. When ocean temperatures were unusually warm in the Florida Keys National Marine Sanctuary in October 2015, coral bleaching resulted from

Photo of undercut coral in Florida Keys National Marine Sanctuary
October 12, 2015

Undercut Coral in the Florida Keys National Marine Sanctuary

Photo of undercut coral taken at Hen and Chickens Reef Sanctuary Preservation Area, Florida Keys National Marine Sanctuary

A diver peeks from behind a badly bleached coral in the Florida Keys National Marine Sanctuary in October 2015
October 12, 2015

Bleached mountainous star coral at Hen and Chickens Sanctuary

A diver peeks from behind a badly bleached coral in the Florida Keys National Marine Sanctuary in October 2015. Coral bleaching events caused by abnormally warm ocean temperatures continue to regularly claim the lives of coral populations around the globe. 

Acoustic Doppler current profiler
September 10, 2015

Acoustic Doppler current profiler, Manatee Strings, Florida

An acoustic Doppler current profiler is being used to measure discharge at Manatee Springs, Florida.

Distant view of sandy yellow beach stretching from bottom left to upper right of photo.
September 1, 2015

Time-averaged image from video of beach in Duck, North Carolina

Time-averaged image, or “timex,” created by averaging the intensity of light recorded at each spot, or “pixel,” during a video taken at Duck, North Carolina, on September 1, 2015. Blurred white zones show where waves are breaking. Light band paralleling the shore marks an offshore sandbar. Dark bands extending away from the beach indicate rip channels. Researchers are

Red mangrove wood in a peat core from a Florida Bay island
April 15, 2015

Mangrove wood, mud in a core reveal Florida Bay changes

A slice of a piston core containing wood and plant material from Russell Key in Florida Bay, Everglades National Park, April 18, 2014. The large piece of wood is from a red mangrove. Photo: USGS

Mangroves and mud flats on island in Florida Bay
April 14, 2015

Mangroves form a protective berm on a Florida Bay island

The transition between a mud flat on the interior of Bob Allen Key (Florida Bay, Everglades National Park) and the mangroves that form the islands’ protective outer berm.  These black mangroves have pneumatophores – parts of the root that function like snorkels, allowing the roots to “breathe” when water overlies the mud flat. Photo: Anna Wachnicka, FIU

Michelle Collier of the USGS holding a black and white Tegu lizard.
December 31, 2014

Michelle Collier of the USGS holding a black and white Tegu

Invasive Species biological science technician Michelle Collier holds an invasive black and white Tegu lizard. 

Perspective view of coastal bathymetry looking onshore, St. Thomas, US Virgin Islands
December 31, 2014

Perspective lidar view of coastal bathymetry at St. Thomas, USVI

Perspective view of coastal bathymetry looking onshore, St. Thomas, US Virgin Islands, mapped using lidar and depicted with false-color, showing detailed submerged features, including coral reefs.

Aerial Photographs of coastal area with lots of houses Key Largo, Florida
September 8, 2014

Aerial Photographs Collected from Key Largo, Florida

Baseline Coastal Oblique Aerial Photographs Collected from Key Largo, Florida, to the Florida/Georgia Border, September 5-6, 2014

Filter Total Items: 399
April 15, 2010

Ilya, an adventurous manatee that wandered as far north as Cape Cod last summer, has recently been sighted at several locations around Miami’s Biscayne Bay, confirmed U.S. Geological Survey (USGS) biologists.

USGS science for a changing world logo
November 20, 2009

Toxins in coal-tar-based sealcoats in parking lots may be the culprit in contaminated house dust, according to a USGS study. PAHs – or polycyclic aromatic hydrocarbons – are large molecules found in oil, coal and tar deposits, and can have toxic effects.

USGS science for a changing world logo
November 4, 2009

The epic flooding that hit the Atlanta area in September was so extremely rare that, six weeks later this event has defied attempts to describe it. Scientists have reviewed the numbers and they are stunning.

USGS science for a changing world logo
October 23, 2009

While most people head to Myrtle Beach for vacation, a group of scientists have been hitting the famous South Carolina beach for years to figure out how to keep the sand from washing away. Although they studied only a limited segment of beach, their work is a model for beach preservation that can apply elsewhere.

USGS science for a changing world logo
October 13, 2009

Five giant non-native snake species would pose high risks to the health of ecosystems in the United States should they become established here, according to a U.S. Geological Survey (USGS) report released today.
The USGS report details the risks of nine non-native boa, anaconda and python species that are invasive or potentially invasive in the United States.

USGS science for a changing world logo
October 1, 2009

Florida's upper Peace River can lose large quantities of water each day to sinkholes. This loss makes the river vulnerable to running dry during periods of low rainfall and limits its ability to support ecosystems and to provide water to residents downstream.

USGS science for a changing world logo
September 24, 2009

The flooding around Atlanta this week is one for the record books. According to the U.S. Geological Survey (USGS), the rivers and streams had magnitudes so great that the odds of it happening were less than 0.2 percent in any given year. In other words, there was less than a 1 in 500 chance that parts of Cobb and Douglas counties were going to be hit with such an event.

USGS science for a changing world logo
September 24, 2009

USGS will Grant Universities $5 Million to Beef Up Public Safety Grants totaling $5 million under the American Recovery and Reinvestment Act are being awarded to 13 universities nationwide to upgrade critical earthquake monitoring networks and increase public safety.

USGS science for a changing world logo
September 23, 2009

The U. S. Geological Survey has crews measuring the historic flooding in many parts of Georgia, especially in north Georgia and the Atlanta region. The USGS has deployed field crews to help repair more than 20 stream gages that were destroyed from the flooding. Crews are rushing to install temporary gages and make streamflow measurements to provide real-time flood information to emergency managers

USGS science for a changing world logo
September 22, 2009

From steamboats to jetskis, Florida's first streamgage in White Springs has seen it all. When the US Geological Survey (USGS) began first recording water levels and flows on the Suwannee River, this small North Florida town was in the midst of the state's first tourism boom. A report published by USGS this month chronicles a century of change at the state's first streamgage.

USGS science for a changing world logo
September 14, 2009

Intersex in smallmouth and largemouth basses is widespread in numerous river basins throughout the United States is the major finding of the most comprehensive and large-scale evaluation of the condition, according to U.S. Geological Survey (USGS) research published online in Aquatic Toxicology.

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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