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 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...

Date published: October 26, 2016

Hydrologic Assessment of New Hanover County, NC Aquifers

New Hanover County is one of the most populated areas along the North Carolina coastline and the population is projected to expand by 25 percent over the next 20 years. County managers and town planners are concerned about escalating demand for groundwater within the county and recognize the importance of high-quality drinking water to meet the demands of a growing population.

This...

Date published: October 24, 2016
Status: Completed

Fate and Transport of Pathogens and Nutrients from Land-Applied Animal Manures

This collaborative project between the U.S. Environmental Protection Agency (USEPA) and the USGS was conducted as part of a larger research program being undertaken by USEPA and the U.S Department of Agriculture at several research sites throughout the United States. Goals included:

1. Obtain detailed data concerning the survival of pathogenic microorganisms from manure applied to soil...

Date published: October 24, 2016
Status: Completed

Factors Affecting Nitrogen and Phosphorus Loads in Nutrient-Sensitive Water of Eastern North Carolina

Data collected between 1997 and 2008 at 48 stream sites were used to characterize relations between watershed settings and stream nutrient yields throughout central and eastern North Carolina. The focus of the investigation was to identify environmental variables in watersheds that influence nutrient export for supporting the development and prioritization of management strategies for...

Date published: October 21, 2016

Demographic and Population Models to Assess Recovery and Status of the Endangered Florida Manatee

Population models developed by USGS are the primary decision-support tools used for status assessments, and rely on estimates of adult survival and reproduction rates from mark-recapture studies.

Date published: October 19, 2016

Characterization of subsurface bedrock fractures at GMH Electronics EPA Superfund Site near Roxboro, NC

The US Environmental Protection designated a former electronics manufacturing facility as a Superfund cleanup site near Roxboro, North Carolina. Operations at a former gasoline station/store and electronic component production facility may have resulted in the presence of a volatile-organic compound (VOC) plume in groundwater in the area; referred to as the "GMH Electronics Site".

The...

Date published: October 19, 2016
Status: Active

Modeling, Estimation, and Adaptive Management of Florida Manatees

The Challenge: Florida manatees are threatened by watercraft-related mortality, the potential loss of warmwater habitat, red tide events, and other anthropogenic factors. The USFWS and the Florida Fish and Wildlife Conservation Commission have regulatory authorities under the Endangered Species Act (ESA), the Marine Mammal Protection Act (MMPA), and state statutes to recover manatees. To...

Filter Total Items: 5,256
Publication Thumbnail
Year Published: 2020

Bathymetric survey and sedimentation analysis of Lago Carite, Puerto Rico, January 2018

During January 23–30, 2018, the U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, conducted a bathymetric survey of Lago Carite primarily to update estimates of the contemporary reservoir storage capacity and sedimentation rate. Previously designated transect lines were surveyed by using a depth sounder coupled...

Gomez-Fragoso, Julieta
Gómez-Fragoso, J.M., 2020, Bathymetric survey and sedimentation analysis of Lago Carite, Puerto Rico, January 2018: U.S. Geological Survey Scientific Investigations Map 3454, 1 sheet, https://doi.org/10.3133/sim3454.

Publication Thumbnail
Year Published: 2020

Migration corridors and threats in the Gulf of Mexico and Florida Straits for loggerhead sea turtles

Along migration corridors, animals can face natural and anthropogenic threats that differ from those in breeding and non-breeding residence areas. Satellite telemetry can aid in describing the timing and location of these migrations. We use this tool with switching state-space modeling and line kernel density estimates to identify migration...

Iverson, Autumn; Benscoter, Allison; Fujisaki, Ikuko; Lamont, Margaret; Hart, Kristen

Publication Thumbnail
Year Published: 2020

Sea turtle conservation: 10 ways you can help

Five species of sea turtle rely on Florida’s coastal and nearshore habitats for nesting during the summer months and foraging throughout the year (Figure 1). - Loggerhead turtles, named for their large, block-shaped heads with strong jaw muscles for crushing benthic invertebrates, are the most common sea turtle species on Florida’s nesting...

Swindall, Jessica E.; Ober, Holly K.; Lamont, Margaret; Carthy, Raymond R.

Publication Thumbnail
Year Published: 2020

Effects of box culverts on stream habitat, channel morphology, and fish and macroinvertebrate communities at selected sites in South Carolina, 2016–18

Much attention has been placed on the role that under-roadway culverts may have in inhibiting upstream fish movement because of altered hydrology and unsuitable conditions for accessing or swimming through the culvert. Other culvert effects related to habitat alterations or disturbance to macroinvertebrate communities have received relatively...

Riley, Jeffrey W.; Beaulieu, Karen M.; Walsh, Stephen J.; Journey, Celeste A.
Riley, J.W., Beaulieu, K.M., Walsh, S.J., and Journey, C.A., 2020, Effects of box culverts on stream habitat, channel morphology, and fish and macroinvertebrate communities at selected sites in South Carolina, 2016–18: U.S. Geological Survey Scientific Investigations Report 2020–5021, 51 p., https://doi.org/10.3133/sir20205021.

Publication Thumbnail
Year Published: 2020

Climate and local environment structure asynchrony and the stability of primary production in grasslands

Aim Climate variability threatens to destabilize production in many ecosystems. Asynchronous species dynamics may buffer against such variability when a decrease in performance by some species is offset by an increase in performance of others. However, high climatic variability can eliminate species through stochastic extinctions or cause similar...

Gilbert, B.; MacDougall, A.S.; Kadoya, T.; Akasaka, M.; Bennett, J. R.; Lind, E.M.; Flores-Moreno, H.; Firn, J.; Hautier, Y.; Borer, E.T.; Seabloom, E.W.; Adler, P.B.; Cleland, E.E.; Grace, James; Harpole, W.S.; Esch, E.H.; Moore, J.L.; Knops, J.; McCulley, R.; Mortensen, B.; Bakker, J.; Fay, P.A.

Publication Thumbnail
Year Published: 2020

The ODD protocol for describing agent-based and other simulation models: A second update to improve clarity, replication, and structural realism

The Overview, Design concepts and Details (ODD) protocol for describing Individual- and Agent-Based Models (ABMs) is now widely accepted and used to document such models in journal articles. As a standardized document for providing a consistent, logical and readable account of the structure and dynamics of ABMs, some research groups also find it...

Grimm, Volker; Railsback, Steven F.; Vincenot, Christian; Berger, Uta; Gallagher, Cara; DeAngelis, Don; Edmonds, Bruce; Ge, Jiaqi; Giske, Jarl; Groeneveld, Jurgen; Johnston, Alice S.A.; Miles, Alexander; Nabe-Nielson, Jacob; Polhill, J. Gareth; Radchuk, Viktoriia; Rohwader, Marie-Sophie; Stillman, Richard A.; Theile, Jan; Ayllon, Daniel

Publication Thumbnail
Year Published: 2020

Hurricane sedimentation in a subtropical salt marsh-mangrove community is unaffected by vegetation type

Hurricanes periodically deliver sediment to coastal wetlands, such as those in the Mississippi River Delta Complex (MRDC), slowing elevation loss and improving resilience to sea-level rise. However, the amount of hurricane sediment deposited and retained in a wetland may vary depending on the dominant vegetation. In the subtropical climate of the...

McKee, Karen L.; Mendelssohn, Irving A.; Hester, Mark W.

Publication Thumbnail
Year Published: 2020

Spatial distribution of heavy metals in the West Dongting Lake floodplain, China

The protection of Dongting Lake is important because it is an overwintering and migration route for many rare and endangered birds of East Asia and Australasia, but an assessment of heavy metal contamination in West Dongting Lake is lacking. A total of 75 sediment samples (five sites x three sediment depths x five repeats) were collected in West...

Peng, Dong; Liu, Ziyu; Su, Xinyue; Xiao, Yaquin; Wang, Yuechen; Middleton, Beth

Publication Thumbnail
Year Published: 2020

A within-season approach for detecting early crop stage of corn and soybean using high temporal and spatial resolution imagery

Crop emergence is a critical stage for crop development and crop growth modeling. Mapping crop emergence using remote sensing data is challenging. Previous remote sensing phenology algorithms showed that crop stages could be detected around the V3-V4 (3 to 4 established leaves) vegetative stage. Traditional approaches have a strong assumption...

Gao, Feng; Anderson, Martha; Daughtry, Craig S. T.; Karnieli, Arnon; Hively, W. Dean; Kustas, William P.

Publication Thumbnail
Year Published: 2020

Water resources of Union Parish, Louisiana

Information concerning the availability, use, and quality of water in Union Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about 4.88 million gallons per day...

Robinson, Angela L.
Robinson, A.L., 2020, Water resources of Union Parish, Louisiana: U.S. Geological Survey Fact Sheet 2020–3002, 6 p., https://doi.org/10.3133/fs20203002.

Publication Thumbnail
Year Published: 2020

An overview of agent-based models in plant biology and ecology

Agent-based modeling (ABM) has become an established methodology in many areas of biology, ranging from the cellular to the ecological population and community levels. In plant science, two different scales have predominated in their use of ABM. One is the scale of populations and communities, through the modeling of collections of agents...

Zhang, Bo; DeAngelis, Donald L.

Publication Thumbnail
Year Published: 2020

A 'weight of evidence' approach to evaluating structural equation models

It is possible that model selection has been the most researched and most discussed topic in the history of both statistics and structural equation modeling (SEM). The reason for this is because selecting one model for interpretive use from amongst many possible models is both essential and difficult. The published protocols and advice for model...

Grace, James

Filter Total Items: 500
Elkhorn coral has died and turned to rubble.
December 31, 2015

Corals die, turn to rubble

These Elkhorn corals (Acropora palmata) near Buck Island, U.S. Virgin Islands have died and collapsed into rubble. As coral reef structure degrades, valuable habitat for marine life is lost and nearby coastlines become more susceptible to storms, waves and erosion.

Near vertical (top, middle) and low angle oblique (bottom) aerial photographs of Bear Inlet, North Carolina.
December 31, 2015

Aerial photographs of Bear Inlet, North Carolina

Near vertical (top, middle) and low angle oblique (bottom) aerial photographs of Bear Inlet, North Carolina. View looking northwest along the North Carolina shore. High waves and storm surge from Hurricane Joaquin eroded the beaches, moving sand inland (green arrow) and reshaping the flood-tidal shoals. The yellow arrows in each image point to the same feature. Near

...
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

...
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. 

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

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

Filter Total Items: 393
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.

USGS science for a changing world logo
August 31, 2009

The American Fisheries Society (AFS) is holding its 139th Annual Meeting in Nashville, Tenn., from Aug. 30-Sept. 3. This year's meeting theme is "Diversity – the Foundation of Fisheries and of AFS: Are We Gaining Ground?" Below are highlights from U.S. Geological Survey research presentations at the conference.

USGS science for a changing world logo
June 16, 2009

Spring nutrient delivery to the northern Gulf of Mexico is among the highest measured by the U.S. Geological Survey (USGS) in thirty years. Too many nutrients, which are essential for plant growth, are not necessarily a good thing.

USGS science for a changing world logo
June 12, 2009

Pesticide-related compounds and elevated levels of nitrate have been found in lakes in central Florida's Lake Wales Ridge region. The compounds found include currently used pesticides, according to the recently published U.S. Geological Survey (USGS) report.

USGS science for a changing world logo
April 15, 2009

Record-breaking floodwaters are working their way down Florida's Suwannee River from the Withlacoochee and Alapaha rivers. Crews from the U.S. Geological Survey (USGS) are in the field measuring the height and volume of water that is rushing downstream.

USGS science for a changing world logo
April 7, 2009

While the Florida panhandle is under flooding, water levels in the streams and wells of southwest Florida are approaching record low levels for this time of year, putting parts of the state at risk of extreme hydrologic drought in the next few months. 

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