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: 5,406
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Year Published: 2020

Assessing the water quality impacts of two Category-5 hurricanes on St. Thomas, Virgin Islands

Managing waterborne and water-related diseases is one of the most critical factors in the aftermath of hurricane-induced natural disasters. The goal of the study was to identify water-quality impairments in order to set the priorities for post-hurricane relief and to guide future decisions on disaster preparation and relief administration. Field...

Jiang, Sunny; Han, Muyue; Chandrasekaran, Srikiran; Fang, Yingcong; Kellogg, Christina A.

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Year Published: 2020

Colony-forming unit spreadplate assay versus liquid culture enrichment-polymerase chain reaction assay for the detection of Bacillus Endospores in soils

A liquid culture enrichment-polymerase chain reaction (E-PCR) assay was investigated as a potential tool to overcome inhibition by chemical component, debris, and background biological impurities in soil that were affecting detection assay performance for soil samples containing Bacillus atrophaeus subsp. globigii (a surrogate for B. anthracis)....

Griffin, Dale W.; Lisle, John T.; Feldhake, David; Silvestri, Erin E.

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Year Published: 2020

Simulation of post-hurricane impact on invasive species with biological control management

Understanding the effects of hurricanes and other large storms on ecological communities and the post-event recovery in these communities can guide management and ecosystem restoration. This is particularly important for communities impacted by invasive species, as the hurricane may affect control efforts. Here we consider the effect of a...

Xu, Linhao; Zdechlik, Marya Claire; Smith, Melissa C.; Rayamajhi, Min B.; DeAngelis, Don; Zhang, Bo

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Year Published: 2020

Traveling to thermal refuges during stressful temperatures leads to foraging constraints in a central-place forager

Central-place foragers can be constrained by the distance between habitats. When an organism relies on a central place for thermal refuge, the distance to food resources can potentially constrain foraging behavior. We investigated the effect of distance between thermal refuges and forage patches of the cold-intolerant marine mammal, the Florida...

Haase, Catherine G.; Fletcher, Robert J.; Slone, Daniel H.; Reid, James P.; Butler, Susan M.

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Year Published: 2020

A comparison of the Trojan Y Chromosome strategy to harvesting models for eradication of nonnative species

The Trojan Y Chromosome strategy (TYC) is a promising eradication method for biological control of nonnative species. The strategy works by manipulating the sex ratio of a population through the introduction of supermales that guarantee male offspring. In the current study, we compare the TYC method with a pure harvesting strategy. We...

Lyu, Jingjing; Schofield, Pamela J.; Reaver, Kristen; Beauregard, Matthew; Parshad, Rana D.

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Year Published: 2020

An overview of bioaerosol load and health impacts associated with dust storms: A focus on the Middle East

Dust storms are an important environmental problem worldwide. The main sources of dust storms include the Sahara, the Middle East, and central and northeastern Asia. Dust storms originating from these regions can be dispersed across oceans and in some cases globally. They occur throughout the year and vary in frequency and intensity. The...

Soleimani, Zahra; Teymouri, Pari; Darvishi Boloorani, Ali; Mesdaghinia, Alireza; Middleton, Nick; Griffin, Dale W.

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Year Published: 2020

Dispersal asymmetry in a two-patch system with source–sink populations

This paper analyzes source–sink systems with asymmetric dispersal between two patches. Complete analysis on the models demonstrates a mechanism by which the dispersal asymmetry can lead to either an increased total size of the species population in two patches, a decreased total size with persistence in the patches, or even extinction in both...

Wu, Hong; Wang, Yuanshi; Li, Yufeng; DeAngelis, Donald L.

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Year Published: 2020

Using integrated population models for insights into monitoring programs: An application using pink-footed geese

Development of integrated population models (IPMs) assume the absence of systematic bias in monitoring programs, yet many potential sources of systematic bias in monitoring data exist (e.g., under-counts of abundance). By integrating multiple sources of data, we can assess whether various sources of monitoring data provide consistent inferences...

Johnson, Fred; Zimmerman, Guthrie S.; Jensen, Gitte H.; Clausen, Kevin K.; Frederiksen, Morten; Madsen, Jesper

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Year Published: 2020

Coastal marsh bird habitat selection and responses to Hurricane Sandy

Wetlands provide numerous ecosystem functions such as water purification, nutrient cycling, and wildlife habitat. Avian populations are indicators of wetland health, and understanding their responses to extreme events can aid in targeting restoration efforts following disturbance. Here, we assessed the habitat selection of six coastal wetland bird...

Benscoter, Allison; Beerens, James; Romanach, Stephanie

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Year Published: 2020

Petroleum hydrocarbons in semipermeable membrane devices deployed in the Northern Gulf of Mexico and Florida keys following the Deepwater Horizon incident

The Deepwater Horizon (DWH) oil spill from April to July of 2010 contaminated Gulf of Mexico waters through release of an estimated 4.1 × 106 barrels of oil. Beginning in June of 2010, semipermeable membrane devices (SPMDs) were deployed near areas with sensitive marine habitats (Alabama Alps and Western Shelf) potentially exposed...

Bargar, Timothy; Alvarez, David; Stout, Scott A.

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Year Published: 2020

Asymptotic population abundance of a two-patch system with asymmetric diffusion

This paper considers a two-patch system with asymmetric diffusion rates, in which exploitable resources are included. By using dynamical system theory, we exclude periodic solution in the one-patch subsystem and demonstrate its global dynamics. Then we exhibit uniform persistence of the two-patch system and demonstrate uniqueness of the positive...

Fang, Mengting; Wang, Yuanshi; Chen, Mingshu; DeAngelis, Donald L.

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-

...
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: 400
USGS
September 5, 2001

Scientists from the U.S. Geological Survey (USGS) in Madison, Wisc., said today that two dead crows, found in the Chicago area tested positive for the West Nile Virus. Last week, dead crows found near Milwaukee also tested positive for the virus. So far this year, West Nile Virus has been identified in 20 states, the District of Columbia and in southern Ontario.

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.

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