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: 337
April 2014 floods in Alabama and Florida
Date Published: February 25, 2019
Status: Completed

April 2014 Floods in Alabama and Florida

Learn more about USGS flood activities related to the April 2014 floods in Alabama and Florida.

USGS boat crew prepares for a discharge measurement during May 2011 Memphis, Tennessee flooding
Date Published: February 25, 2019
Status: Completed

May 2011 Memphis, Tennessee Flood

Learn more about USGS flood activities related to the May 2011 flood in Memphis, Tennessee, including deploying emergency real-time surface-water stage gages at critical locations in Shelby County.

Total Actual Evapotranspiration rates for 2000, in inches per year
Date Published: February 14, 2019
Status: Active

Actual Evapotranspiration for Florida

Evapotranspiration is a large component of the Florida water budget – generally second only to rainfall, but exceeding rainfall and all other components during droughts. The prominence of evapotranspiration highlights the need to accurately quantify this hydrologic component in quantitative analyses of watershed hydrology.  Spatio-temporal estimates of evapotranspiration throughout Florida are...

ET evapotranspiration weather tower research
Date Published: February 12, 2019
Status: Active

Reference and Potential Evapotranspiration

Evapotranspiration can be computed as reference, potential, or actual evapotranspiration.   Reference evapotranspiration is that from a grass surface that is well-watered.  Potential evapotranspiration is that from a surface that has unlimited water (such as a lake). 

Reference and potential evapotranspiration are computed at a 2-kilometer spatial resolution and daily timestep for the...

Image: Boat Entering Lake Okeechobee
Date Published: February 11, 2019
Status: Completed

Characteristics of flow through the Franklin lock and their effects on downstream water-quality

The USGS completed a study to investigate correlations between flow rates and volumes through the W.P. Franklin Lock and Dam and water-quality constituents inside the J.N. "Ding" Darling National Wildlife Refuge from March 2010 to December 2013. Scientific Investigations Report 2016-5033, authored by Amanda Booth, Lars Soderqvist, and Travis Knight, summarizes the results of the study. A...

Topo Map west Florida
Date Published: February 8, 2019
Status: Active

Geographic Information Systems (GIS)

Maps are an integral part of water-science activities and the Caribbean Florida Water Science Center utilizes and produces maps for all types of hydrologic projects and in information dissemination. Maps are also helpful for providing the user with a geographical reference to our water information. 

Hydrologist conducting a sedimentation survey at Lago La Plata, Puerto Rico
Date Published: February 8, 2019
Status: Active

Water-Quality for Florida

The U.S. Geological Survey provides scientific and technical expertise, leadership, and coordination in addressing issues concerning the quality of the Nation's water resources. Our scientists:

  • Collect, analyze, and interpret water-quality data,
  • Engage in field and laboratory research and methods development,
  • Work with local, State, and Federal agencies and the
  • ...
Contacts: Amanda Booth
Hydrologist conducting a sedimentation survey at Lago La Plata, Puerto Rico
Date Published: February 8, 2019
Status: Active

Water Quality for Puerto Rico

The U.S. Geological Survey operates and maintains approximately 7,300 streamgages nationwide, 194 in Puerto Rico, which provide long-term, accurate, and unbiased information that meets the needs of many diverse users. The USGS collects the streamflow data needed by Federal, State, and local agencies for planning and operating water-resources projects and regulatory programs.

The links...

Hurricane Irma
Date Published: February 7, 2019
Status: Active

Hurricanes

Preventing flood hazards, such as hurricane-induced tidal surge, from becoming human disasters requires an understanding of the relative risks floods pose to specific communities and knowledge of the processes by which flood waters rise, converge, and abate. Historically, hurricane-induced tidal surge has been documented through measurement of high-water marks left on structures or vegetation...

Contacts: Richard L Kane
Surface-water and salinity control stucture G-54, on the North New River Canal, Broward County, Florida
Date Published: February 7, 2019
Status: Completed

Effects of hydrologic system alterations on salinity in the Biscayne aquifer in Broward Co.

To address concerns about the effects of water-resource management practices and rising sea level on saltwater intrusion, the U.S. Geological Survey in cooperation with the Broward County Environmental Planning and Community Resilience Division, initiated a study to examine causes of saltwater intrusion and predict the effects of future alterations to the hydrologic system on salinity...

Overview of the study area location, Miami-Dade County, FL.
Date Published: February 7, 2019
Status: Completed

Mapping water levels in the Biscayne aquifer

To help inform decisions necessary for urban planning and development, Miami-Dade County Department of Regulatory and Economic Resources partnered with USGS to produce statistical analyses and maps representing mean, high, and low water-level conditions in the surface water and groundwater of Miami-Dade County.

Filter Total Items: 70
Tennessee Current Water Conditions Image
November 29, 2016

See Current Water Conditions for Tennessee using our new interactive map. Here you can find information on Groundwater, Surface Water and Water Quality.

Alabama Current Water Conditions Image
November 29, 2016

See Current Water Conditions for Alabama using our new interactive map. Here you can find information on Groundwater, Surface Water and Water Quality. 

The USGS Flood Event Viewer (FEV) is the public data discovery component of the Short-Term Network (STN) database. Data viewable
October 7, 2016

The USGS Flood Event Viewer (FEV) is the public data discovery component of the Short-Term Network (STN) database. Data viewable and downloadable from this page are from the STN database. This application integrates with the USGS National Water Information System (NWIS) database  for display of time-series water data.

Memphis Area Groundwater-Level Network Map
September 26, 2016

Groundwater Watch is a supplemental tool to NWISWeb and, as such, is able to provide additional benefits to the groundwater community. NWIS is the authoritative database for USGS groundwater data, and NWISWeb is the public interface for these groundwater data. This is information pertaining to the Memphis Area Groundwater-Level Network.

Streamstats for Georgia
September 20, 2016

StreamStats is a Web-based Geographic Information Systems (GIS) application that provides users with access to an assortment of analytical tools that are useful for a variety of water-resources planning and management purposes, and for engineering and design purposes.

SLR graphic
April 21, 2016

The interactive sea-level rise visualization tool results from a collaborative effort between NOAA's Coastal Services Center, USGS WARC, and USGS Mississippi Water Science Center. The tool illustrates the scale of potential flooding, but not the exact location, and does not account for erosion, subsidence, sediment accretion, or future construction. 

AL-SHU graphic
April 21, 2016

WARC's Advanced Applications Team develops and maintains databases and applications to help the Alabama Department of Transportation and the U.S. Fish and Wildlife Service ensure new road construction and existing road maintenance at waterway crossings don't adversely affect threatened and endangered species dependent on those waterways. 

Structure datasets for the nation from The National Map
April 20, 2016

USGS data portray selected structures data, including the location and characteristics of manmade facilities. Characteristics consist of a structure's physical form (footprint), function, name, location, and detailed information about the structure. The types of structures collected are largely determined by the needs of the disaster planning and response and homeland security organizations.

3D Lidar Point Cloud Image of San Francisco Bay and Golden Gate Bridge
April 19, 2016

The USIEI is a comprehensive, nationwide listing of known high-accuracy topographic and bathymetric data for the United States and its territories. The project is a collaborative effort of the USGS and NOAA with contributions from other federal agencies. The inventory supports the 3D Elevation Program and the Integrated Ocean and Coastal Mapping effort. This resource is updated in Spring and Fall.

Filter Total Items: 4,923
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Year Published: 2019

Response of tidal marsh vegetation to pulsed increases in flooding and nitrogen

Worldwide, human activities have modified hydrology and nutrient loading regimes in coastal wetlands. Understanding the interplay between these drivers and subsequent response of wetland plant communities is essential to informing wetland management and restoration efforts. Recent restoration strategies in Louisiana proposes to use sediment...

McCoy, Meagan M; Sloey, Taylor M; Howard, Rebecca J.; Hester, Mark W.

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Year Published: 2019

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: 2019

A pragmatic approach for comparing species distribution models to increasing confidence in managing piping plover habitat

Conservation management often requires decision-making without perfect knowledge of the at-risk species or ecosystem. Species distribution models (SDMs) are useful but largely under-utilized due to model uncertainty. We provide a case study that utilizes an ensemble modeling approach of two independently derived SDMs to explicitly address common...

Maslo, Brooke; Zeigler, Sara; Drake, Evan; Pover, Todd; Plant, Nathaniel G.

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Year Published: 2019

A comparison of hydrocarbon-related landscape disturbance patterns along the New York-Pennsylvania border, 2004–2013

Executive SummaryThe New York-Pennsylvania area has a long history of hydrocarbon extraction, and the addition of shale gas extraction methods contributes to landscape disturbance borne by previously developed oil and non-shale gas resources. The main unconventional extraction method used to extract shale gas from the Marcellus Shale located in...

Roig-Silva, Coral M.; Milheim, Lesley E.; Slonecker, E. Terrence; Kalaly, Siddiq; Chestnut, Joseph
Roig-Silva, C.M., Milheim, L.E., Slonecker, E.T., Kalaly, S., and Chestnut, J., 2019, A comparison of hydrocarbon-related landscape disturbance patterns along the New York-Pennsylvania border, 2004–2013: U.S. Geological Survey Scientific Investigations Report 2019–5096, 23 p., https://doi.org/10.3133/sir20195096.

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Year Published: 2019

Flood-frequency comparison from 1995 to 2016 and trends in peak streamflow in Arkansas, water years 1930–2016

In 2016, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers and the Federal Emergency Management Agency, began a study in Arkansas to investigate possible increasing trends in annual peak streamflow data and the possible resulting increase in the annual exceedance probability flood (AEPF) predictions. Temporal trends...

Ensminger, Paul A.; Breaker, Brian K.
Ensminger, P.A., and Breaker, B.K., 2019, Flood-frequency comparison from 1995 to 2016 and trends in peak streamflow in Arkansas, water years 1930–2016: U.S. Geological Survey Scientific Investigations Report 2019–5131, 20 p., https://doi.org/10.3133/sir20195131.

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Year Published: 2019

Comparing live-capture methods for nutria: single- versus multiple-capture cage traps

Herbivory and burrowing by nutria (Myocastor coypus) cause substantial ecological and economic damage. Trapping is a common, effective practice for reducing nutria damage; however, trapping approaches must continually be adapted to keep pace with evolving animal welfare and ethical issues and to more effectively target pest species of interest....

Sheffels, Trevor R.; Carter, Jacoby; Sytsma, Mark S.; Taylor, Jimmy D.

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Year Published: 2019

Asian swamp eels in North America linked to the live-food trade and prayer-release rituals

We provide a history of swamp eel (family Synbranchidae) introductions around the globe and report the first confirmed nonindigenous records of Amphipnous cuchia in the wild. The species, native to Asia, is documented from five sites in the USA: the Passaic River, New Jersey (2007), Lake Needwood, Maryland (2014), a stream in Pennsylvania (2015),...

Nico, Leo; Kilian, Jay V.; Ropicki, Andrew J.; Harper, Matthew

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Year Published: 2019

Using δ13C and δ18O to analyze loblolly pine (Pinus taeda L.) response to experimental drought and fertilization

Drought frequency and intensity are projected to increase throughout the southeastern USA, the natural range of loblolly pine (Pinus taeda L.), and are expected to have major ecological and economic implications. We analyzed the carbon and oxygen isotopic compositions in tree ring cellulose of loblolly pine in a factorial drought (~30% throughfall...

Lin, Wen; Domec, Jean-Christophe; Ward, Eric; Marshall, John D.; King, John S; Laviner, Marshall A.; Fox, Thomas R; West, Jason B.; Sun, Ge; McNulty, Steve G; Noormets, Asko

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Year Published: 2019

Potentiometric surface of groundwater-level altitudes near the planned Highway 270 bypass, east of Hot Springs, Arkansas, July–August 2017

The Ouachita Mountains aquifer system potentiometric-surface map is one component of the Hot Springs Bypass Groundwater Monitoring Project. The potentiometric-surface map provides a baseline assessment of shallow groundwater levels and flow directions before the construction of the Arkansas Department of Transportation planned extension of the...

Nottmeier, Anna M.; Hays, Phillip D.
Nottmeier, A.M., and Hays, P.D., 2019, Potentiometric surface of groundwater-level altitudes near the planned Highway 270 bypass, east of Hot Springs, Arkansas, July–August 2017: U.S. Geological Survey Scientific Investigations Map 3444, 13 p., 1 sheet, https://doi.org/10.3133/sim3444.

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Year Published: 2019

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: 2019

The importance of natural versus human factors for ecological conditions of streams and rivers

Streams are influenced by watershed-scale factors, such as climate, geology, topography, hydrology, and soils, which mostly vary naturally among sites, as well as human factors, agriculture and urban development. Thus, natural factors could complicate assessment of human disturbance. In the present study, we use structural equation modeling and...

Tang, Tao; Stevenson, R. Jan; Grace, James

Filter Total Items: 503
Dark image from a video camera shooting for 10 minutes, shows a beach and where varying degrees of movement happened.
November 13, 2018

Isla Verde Video Camera 4 Variance Image

Variance image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and shows areas of more movement as brighter colors.

Image from a video camera shooting for 10 minutes tracks the brightest pixels through that time.
November 13, 2018

Isla Verde Video Camera 1 Bright Image

Bright image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the brightest pixels through 10 minutes of motion.

Image from a video camera shooting for 10 minutes tracks the brightest pixels through that time.
November 13, 2018

Isla Verde Video Camera 2 Bright Image

Bright image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the brightest pixels through 10 minutes of motion.

Image from a video camera shooting for 10 minutes tracks the brightest pixels through that time.
November 13, 2018

Isla Verde Video Camera 3 Bright Image

Bright image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the brightest pixels through 10 minutes of motion.

Image from a video camera shooting for 10 minutes tracks the brightest pixels through that time.
November 13, 2018

Isla Verde Video Camera 4 Bright Image

Bright image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the brightest pixels through 10 minutes of motion.

Time exposure image shows a curving beach and the water is smooth where waves were breaking over a 10-minute period.
November 13, 2018

Isla Verde Video Camera 2 Timex

Time-exposure image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is time-averaged over 10 minutes of video.

Time exposure image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image represents a time-ave
November 13, 2018

Isla Verde Video Camera 3 Timex

Time-exposure image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is time-averaged over 10 minutes of video.

Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
November 8, 2018

Isla Verde Video Camera 1 Dark Image

Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

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A healthy coral reef at Buck Island, U.S. Virgin Island
April 20, 2017

In the first ecosystem-wide study of changing sea depths at five large coral reef tracts in Florida, the Caribbean and Hawai’i, U.S. Geological Survey researchers found the sea floor is eroding in all five places, and the reefs cannot keep pace with sea level rise. As a result, coastal communities protected by the reefs are facing increased risks from storms, waves and erosion.

A Manatee swimming in Florida waters.
April 11, 2017

Florida’s iconic manatee population is highly likely to endure for the next 100 years, so long as wildlife managers continue to protect the marine mammals and their habitat, a new study by the US Geological Survey and the Florida Fish and Wildlife Research Institute has found.

person standing next to large boulder
March 20, 2017

Geologists have discovered evidence that unusual seas detached living corals from a Caribbean reef and scattered them far inland, as boulders, during the last centuries before Columbus arrived. The new findings will reinforce precautions against coastal hazards, Caribbean tsunami specialists said.

A SCUBA diver beside a Massive starlet coral on the sea floor at Dry Tortugas National Park
January 25, 2017

Boulder corals in the waters of Dry Tortugas National Park, 70 miles from Key West, contain evidence that confirms a centuries-old sea temperature cycle linked to rains, droughts and hurricanes.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
January 19, 2017

A regional assessment of untreated groundwater in the Southeastern Coastal Plain aquifer system is now available from the U.S. Geological Survey.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
January 19, 2017

A regional assessment of untreated groundwater in the combined Valley and Ridge and Piedmont and Blue Ridge aquifers in the eastern United States is now available from the U.S. Geological Survey.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
January 19, 2017

A regional assessment of untreated groundwater in the Coastal Lowlands aquifer system in the southeastern United States is now available from the U.S. Geological Survey.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
January 19, 2017

A regional assessment of untreated groundwater in the Northern Atlantic Coastal Plain aquifer system in the eastern United States is now available from the U.S. Geological Survey.

Vilano Beach, Florida before and after Hurricane Matthew
October 31, 2016

New low-altitude aerial photos of Southeastern beaches taken before and after Hurricane Matthew passed offshore show a new storm-cut inlet, and roads, dunes and structures lost.

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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