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: May 1, 2014
Status: Active

Updating Low-Flow Statistics at USGS Streamgages and Regionalization of Selected Low-Flow Characteristics for Alabama Streams

As part of their mission to protect public health and aquatic ecosystems, Alabama state agencies need accurate and representative streamflow statistics to establish realistic and applicable criteria for both water quality and water quantity (fig. 1). Historically, low-flow statistics, such as the annual minimum 7-day average flow that likely will occur, on average, once every 10 years (7Q10),...

Date published: April 17, 2014

Use of Amphibian Communities as Indicators of Restoration Success in the Greater Everglades

Habitat alteration and climate, when combined, are serious threats to amphibians and other wildlife. Habitat suitability models are being used to predict the responses of an amphibian community to hydrological and habitat restoration in the Greater Everglades Ecosystem. 

Date published: December 20, 2013

Ecological limit functions relating fish community response to hydrologic departures of the ecological flow regime in the Tennessee River basin, United States

Ecological limit functions relating streamflow and aquatic ecosystems remain elusive despite decades of research. We investigated functional relationships between species richness and changes in streamflow characteristics at 662 fish sampling sites in the Tennessee River basin. To learn more visit: http://onlinelibrary.wiley.com...

Date published: February 27, 2013
Status: Active

Webinar: Preliminary Results from “La Florida” - A Land of Flowers on a Latitude of Deserts

View this webinar to learn more about climate modeling techniques used by ecologists to predict the impacts of climate change on Floridian wildlife.

Contacts: Dr. Thomas Smith
Date published: January 8, 2013

Environmental Flow Research in the Tennessee River Basin

The objective of this project is to improve understanding of how alteration of streamflow characteristics affects the ecological health of rivers and streams in Tennessee. Initial efforts are aimed at identifying critical streamflow characteristics and providing a set of statistical tools and analytical approaches for the prediction of these characteristics. Application of these tools will...

Date published: September 22, 2012

U.S. Geological Survey Flood Inundation Mapping Science

Static flood-inundation map libraries consist of maps that have been created in advance of a flood that are ready to be served through the Internet. Each library consists of a set of flood extent and depth maps developed for predetermined stream stage intervals (for example, a map for each one foot of stage). A user can view real-time or forecast stage data from a USGS streamgage or National...

Date published: September 22, 2012

USGS StreamStats

StreamStats is a Web-based tool that provides streamflow statistics, drainage-basin characteristics, and other information for USGS streamgaging stations and for user-selected ungaged sites on streams. When users select the location of a streamgaging station, StreamStats provides previously published information from a database. When users select a site on an ungaged stream, StreamStats will...

Date published: April 13, 2012

Predicting ecological flow regime at ungaged sites: A comparison of methods

Nineteen ecologically relevant streamflow characteristics were estimated using published rainfall–runoff and regional regression models for six sites with observed daily streamflow records in Kentucky. The regional regression model produced median estimates closer to the observed median for all but two characteristics. The variability of predictions from both models was generally less than the...

Date published: September 22, 2011
Status: Active

Terrestrial Light Detection and Ranging (T-LiDAR) Technology

T-LiDAR technology utilizes reflected laser pulses sent from a tripod-mounted scanning instrument to determine distances to targets of interest. The resulting dataset is a 3 dimensional model or "point cloud" of millions of XYZ data points, spaced only a few millimeters apart. This highly detailed dataset is used by USGS scientists to create topographic models, make detailed measurements, and...

Date published: September 2, 2011
Status: Active

Historical Preservation of Toomer's Oaks in Auburn, AL

The live oaks framing Toomer's Corner in Auburn, Alabama were planted about 1880 and have served as a focal point for Auburn celebrations in recent decades. The trees recently received a powerful dose of an herbicide known as Spike 80DF. In an effort to save the trees, a task force made up of university horticulturists, landscapers, agronomists, engineers, chemists and others has undertaken a...

Contacts: Dr. Luke Marzen
Date published: September 26, 2010
Status: Active

Coastal Plain Culvert Study

Various environmental groups in Alabama are concerned that the use of culverts at highway crossings to convey stream flows has detrimental effects on the natural conditions of streams. Specifically, some groups are concerned that changes in stream geomorphology, sediment concentrations, and associated turbidity adversely impact the benthic macroinvertebrate community when culverts are...

Filter Total Items: 5,356
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Year Published: 2020

Late Quaternary evolution and stratigraphic framework influence on coastal systems along the north-central Gulf of Mexico, USA

Coastal systems in the Gulf of Mexico are threatened by reduced sediment supply, storm impacts and relative sea-level rise (RSLR). The geologic record provides insight into geomorphic evolution thresholds to these forcing mechanisms to help predict future barrier evolution in response to climate change. This study synthesizes ∼2100 km of...

Hollis, Robert S; Wallace, Davin J; Miner, Michael D; Gal, Nina S; Dike, Clayton H; Flocks, James G.

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Year Published: 2020

Changes in event‐based streamflow magnitude and timing after suburban development with infiltration‐based stormwater management

Green stormwater infrastructure implementation in urban watersheds has outpaced our understanding of practice effectiveness on streamflow response to precipitation events. Long‐term monitoring of experimental urban watersheds in Clarksburg, Maryland, USA, provided an opportunity to examine changes in event‐based streamflow metrics in two treatment...

Hopkins, Kristina G.; Bhaskar, Aditi S.; Woznicki, Sean; Fanelli, Rosemary

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Year Published: 2020

Predicting functional responses in agro-ecosystems from animal movement data to improve management of invasive pests

Functional responses describe how changing resource availability affects consumer resource use, thus providing a mechanistic approach to prediction of the invasibility and potential damage of invasive alien species (IAS). However, functional responses can be context dependent, varying with resource characteristics and availability, consumer...

Wilber, Mark Q.; Chinn, Sarah M.; Beasley, James C.; Boughton, Raoul; Brook, Ryan K.; Ditchkoff, Stephen S.; Fischer, Justin W.; Hartley, Stephen B.; Holmstrom, Lindsey K.; Kilgo, John C.; Lewis, Jesse S.; Miller, Ryan S.; Snow, Nathan P.; Vercauteren, Kurt C.; Wisely, Samantha M.; Webb, Colleen T.; Pepin, Kim M.

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Year Published: 2020

The long-term effects of Hurricanes Wilma and Irma on soil elevation change in Everglades mangrove forests

Mangrove forests in the Florida Everglades (USA) are frequently affected by hurricanes that produce high-velocity winds, storm surge, and extreme rainfall, but also provide sediment subsidies that help mangroves adjust to sea-level rise. The long-term influence of hurricane sediment inputs on soil elevation dynamics in mangrove forests are not...

Feher, Laura; Osland, Michael; Anderson, Gordon; Vervaeke, William; Krauss, Ken; Whelan, Kevin R. T.; Balentine, Karen M.; Tiling-Range, Ginger; Smith, Thomas J.; Cahoon, Donald

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Year Published: 2020

An integrative GIS approach to analyzing the impacts of septic systems on the coast of Florida, USA

An estimated 2.7 million septic systems in Florida, USA are potential ground and surface water contaminant sources that may affect environmental and human health. This study examined the spatial distribution of septic systems, coastal surface water contamination, and related environmental factors of coastal Florida watersheds at the 8-digit...

Flanagan, Kyle; Dixon, Barnali; Rivenbark, Tess; Griffin, Dale W.

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Year Published: 2020

Quantifying hydrologic controls on local- and landscape-scale indicators of coastal wetland loss

Background and AimsCoastal wetlands have evolved to withstand stressful abiotic conditions through the maintenance of hydrologic feedbacks among vegetation production and flooding. However, disruption of these feedbacks can lead to ecosystem collapse, or a regime shift from vegetated wetland to open water. To prevent the loss of critical coastal...

Stagg, Camille; Osland, Michael; Moon, Jena A.; Hall, Courtney; Feher, Laura; Jones, William R.; Couvillion, Brady; Hartley, Stephen B.; Vervaeke, William

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Year Published: 2020

Winter climate change and the poleward range expansion of a tropical invasive tree (Brazilian pepper ‐ Shinus terebinthifolius)

Winter climate change is expected to lead to the tropicalization of temperate ecosystems, where tropical species expand poleward in response to a decrease in the intensity and duration of winter temperature extremes (i.e., freeze events). In the southeastern United States, freezing temperatures control the northern range limits of many invasive...

Osland, Michael; Feher, Laura

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Year Published: 2020

Effects of climate-related variability in storage on streamwater solute concentrations and fluxes in a small forested watershed in the Southeastern United States

Streamwater quality can be affected by climate-related variability in hydrologic state, which controls flow paths and affects biogeochemical processes. Thirty-one years of input/output solute fluxes at Panola Mountain Research Watershed, a small, forested, seasonally water-limited watershed near Atlanta, Georgia, were used to quantify the effects...

Aulenbach, Brent T.

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Year Published: 2020

Using carbon isotope ratios to verify predictions of a model simulating the interaction between coastal plant communities and their effect on ground water salinity

As sea level rises in low-lying coastal islands, salt-tolerant (halophytic) coastal vegetation communities may be able to migrate inland, replacing the freshwater vegetation that is unable to tolerate salt stress. The pace of such shifts may be accelerated by a self-reinforcing feedback between the halophytic vegetation and salinity, as well as by...

Subedi, Suresh C.; Sternberg, Leonel; DeAngelis, Donald L.; Ross, Michael S.; Ogarcak, Danielle

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Year Published: 2020

Considerations for maximizing the adaptive potential of restored coral populations in the western Atlantic

Active coral restoration typically involves two interventions: crossing gametes to facilitate sexual larval propagation; and fragmenting, growing, and outplanting adult colonies to enhance asexual propagation. From an evolutionary perspective, the goal of these efforts is to establish self‐sustaining, sexually reproducing coral populations that...

Baums, Iliana B.; Baker, Andrew C; Davies, Sarah W; Grottoli, Andrea G; Kenkel, Carly D; Kitchen, Sheila A; Kuffner, Ilsa B.; LaJeunesse, Todd C; Matz, Mikhail V; Miller, Margaret W; Parkinson, John E; Shantz, Andrew A

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Year Published: 2020

A comprehensive approach uncovers hidden diversity in freshwater mussels (Bivalvia: Unionidae) with the description of a novel species

Major geological processes have shaped biogeographical patterns of riverine biota. The Edwards Plateau of central Texas, USA, exhibits unique aquatic communities and endemism, including several species of freshwater mussels. Lampsilis bracteata (Gould, 1855) is endemic to the Edwards Plateau region; however, its phylogenetic relationship...

Inoue, Kentaro; Harris, John L.; Robertson, Clint; Johnson, Nathan; Randklev, Charles R.

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Year Published: 2020

Establishing genome sizes of focal fishery and aquaculture species along Baja California, Mexico

Genome size—the total haploid content of nuclear DNA— is constant in all cells in individuals within a species, but differs among species. Consequently, the genome size is a quantifiable genetic signature that not only characterizes a species, but it can reflect chromatin modifications, which play fundamental roles in most biological processes...

del Mar Ochoa-Saloma, Constanza; Jenkins, Jill A.; Segovia, Manuel A.; Del Rio-Portilla, Miguel A.; Paniagua-Chavez, Carmen G.

Filter Total Items: 498
Peachtree Creek, Atlanta, Ga. water monitoring site showing USGS monitoring equipment.
September 23, 2009

Peachtree Creek WaterWatch, Atlanta, Ga. water monitoring site

Peachtree Creek at Atlanta (USGS 02336300) Water Monitoring Site

There are many pieces of equipment, both mechanical and electronic, that are installed at the Peachtree Creek monitoring site to measure, record, and transmit both water-quantity and water-quality information. The U.S. Geological Survey (USGS) monitors "real-time" streamflow and water-

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Peachtree Creek, Atlanta, Ga. Sept 2009-Epic flooding results in water overwashing a bridge over the creek.
September 22, 2009

Peachtree Creek, Atlanta, Ga. Sept 2009 - Epic flooding event

Epic flooding conditions at Peachtree Creek, Atlanta, Ga., September 2009.

The picture was taken during the epic September 2009 flooding event, which caused the creek to peak at a 23 foot stage. In this flood, the high water did not happen becuase of the usual circumstances - rain falling upstream of the site accumulating and flowing downstream to this site. Here,

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USGS hydrographer preparing to measure streamflow at the Chattahoochee River, GA below Morgan Falls Dam water-monitoring site.
September 21, 2009

Measuring streamflow at the Chattahoochee River, epic Sep 2009 flood

Many days of continuous heavy rain in mid-September have resulted in flooding in many parts of Georgia, especially in north Georgia and the Atlanta region. These rains have been producing streamflows of record proportions.

Here, a USGS hydrographer is preparing to measure streamflow at the Chattahoochee River below Morgan Falls Dam water-monitoring site, Fulton

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USGS scientists working during the epic September 2009 flood in Georgia. Power Springs Creek (02336870)
September 21, 2009

USGS scientists measuring Sept. 2009 flooding, Powder Springs Cr, GA

Epic Flooding in Georgia, 2009

Metropolitan Atlanta—September 2009 Floods

  • The epic floods experienced in the Atlanta area in September 2009 were extremely rare. Eighteen streamgages in the Metropolitan Atlanta area had flood magnitudes much greater than the estimated 0.2-percent (500-year) annual exceedance probability.
  • The
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Queen angelfish - Hurricane Hole, Virgin Islands
September 18, 2009

Queen angelfish - Hurricane Hole, Virgin Islands

A queen angelfish peers through the safety of the mangrove roots across the rich colors and textures of corals, sponges, urchins, and algae. Queen angelfish feed almost exclusively on sponges, which are abundant in these mangroves.

USGS
September 15, 2009

Hurricane Floyd, and the Floods of 1999

USGS North Carolina Water Science Center Director Jerad Bales discusses Hurricane Floyd and flood impacts on North Carolina in 1999.

USGS
September 1, 2009

Hurricane Hugo, Storm-surge monitoring techniques, twenty-years later

South Carolina Water Science Center Surface Water Specialist Paul Conrads discusses USGS storm-surge monitoring techniques changes since Hurricane Hugo in 1989.

Ryan Rasmussen and Cassandra Pfeifle, Hydrologic Technicians, collect samples at Little River Reservoir, 2009.
August 19, 2009

Water Sampling at Little River Reservoir, Durham County, NC, 2009.

Ryan Rasmussen and Cassandra Pfeifle, Hydrologic Technicians, collect samples at Little River Reservoir, 2009. 

USGS
July 30, 2009

Introduction to USGS Water Science in South Carolina

SC Water Science Center Director Eric W. Strom discusses USGS water science programs in South Carolina, as interviewed by SC Public Radio "Your Day" host, Donna London.

Eft Stage of a Red-Spotted Newt
May 23, 2009

Eft Stage of a Red-Spotted Newt

The eft stage of a red-spotted newt in Walker County, Georgia (Crockford-Pigeon Mountain Wildlife Management Area)

Image: Northwest Florida is inundated by floodwaters
April 15, 2009

Northwest Florida is inundated by floodwaters

The rural landscape in northwest Florida is inundated by floodwaters of the Alapaha River.

Filter Total Items: 399
USGS science for a changing world logo
June 12, 2001

Radon concentrations in ground water from homeowners’ wells in the Blue Ridge area of the New River watershed, in parts of North Carolina and Virginia, were among the highest measured in the nation in a new report from the U.S. Geological Survey. Radon is a radioactive gas, and radon in air is the second leading cause of lung cancer.

USGS
June 12, 2001

Radon concentrations in ground water from homeowners’ wells in the Blue Ridge area of the New River watershed, in parts of North Carolina and Virginia, were among the highest measured in the nation in a new report from the U.S. Geological Survey. Radon is a radioactive gas, and radon in air is the second leading cause of lung cancer.

USGS science for a changing world logo
May 25, 2001

Scientists from the U.S. Geological Survey are drilling a core hole at Kure Beach near the Ft. Fisher Historical Site that will be the first step in a statewide program to document and describe the subsurface geology of the North Carolina Coastal Plain.

USGS
May 25, 2001

How much water is there, how long will it last, and where is it, are questions that scientists are trying to answer as they drill holes this summer in North Carolina.

USGS science for a changing world logo
March 7, 2001

A minor earthquake, preliminary magnitude 3.2 according to the U.S. Geological Survey, occurred today (Mar. 7), about 15 miles (30 km) WNW of Athens, Tennessee at 11:12 am local time (Eastern Standard Time). The earthquake was felt in Athens. The USGS has received no reports of damage at this time.

USGS
March 7, 2001

A minor earthquake, preliminary magnitude 3.2 according to the U.S. Geological Survey, occurred today (Mar. 7), about 15 miles (30 km) WNW of Athens, Tennessee at 11:12 am local time (Eastern Standard Time). The earthquake was felt in Athens. The USGS has received no reports of damage at this time.

USGS
January 25, 2001

If the aquarium of brightly colored exotic fish with interesting names like angelfish, swordtail, glow-light tetra, hatchet fish and tire track eel that Aunt Tillie gave you for Christmas is rapidly becoming a burden, think twice before you dump the tank and destroy the evidence.

USGS
December 5, 2000

A deadly bird disease, avian vacuolar myelinopathy (AVM), is affecting mallard ducks and coots on Woodlake in North Carolina; coots on Lake Juliette in central Georgia; and coots, bald eagles and -- for the first time -- a Canada goose on Strom Thurmond Lake on the border of South Carolina and Georgia.

USGS
October 20, 2000

Scientists from the U.S. Geological Survey in Madison, Wisc., confirmed today that a dead crow, found in Chatham County, N.C., near the town of Moncure died of the West Nile Virus. The finding marks the farthest south the virus has been identified. Moncure is about 40 miles southwest of Raleigh.

USGS
March 3, 2000

A new population of non-native Asian swamp eels, a highly adaptable predatory fish, has been found near the eastern border of Everglades National Park in the area of Homestead, Fla.

USGS
November 19, 1999

Although Hurricane Lenny brought high winds and heavy rains to Puerto Rico, residents in the vicinity of Lago La Plata were spared the hazards and inconveniences of an unnecessary evacuation Wednesday morning, in part because of the efforts of U.S. Geological Survey Caribbean District Office personnel in advance of, and during the storm.

USGS
October 21, 1999

Due to an unprecedented decision by the U.S. Geological Survey representative in Puerto Rico, two USGS employees in Guaynabo have actually moved to the city’s civil defense facility and will remain there until the latest in a series of hurricanes (Jose) no longer appears to threaten the lives and property of the residents of Puerto Rico and the Virgin Islands.

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