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: 372
Date published: February 25, 2019
Status: Completed

Spring/Summer 2011 Mississippi River Basin Floods

Learn more about USGS flood activities related to the Spring/Summer 2011 floods throughout the Mississippi River Basin.

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.

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...

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...

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...

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. 

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
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...

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: Wesley W Stone
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...

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.

Date published: February 6, 2019
Status: Completed

Dam Failure Analysis for the Lago El Guineo Dam, Puerto Rico

The USGS Scientific Investigations Report 2016-5070 describing a hydrologic and hydraulic study to assess the potential hazard to human life and property associated with the hypothetical failure of the Lago El Guineo Dam was completed by the USGS in cooperation with the Puerto Rico Electric Power Authority. 

Filter Total Items: 70
Date published: April 18, 2016

Coastal and Marine Geology Video and Photography Portal

This portal contains U.S. Geological Survey (USGS) video and photography of the seafloor off of coastal California and Massachusetts, and aerial imagery of the coastline along segments of the Gulf of Mexico and mid-Atlantic coasts. These data were collected as part of several USGS Coastal and Marine Geology Program Seafloor Mapping projects and Hurricane and Extreme Storm research.

Date published: April 12, 2016

Orthoimagery Data

Orthoimagery data typically are high resolution aerial images that combine the visual attributes of an aerial photograph with the spatial accuracy and reliability of a planimetric map. The National Map offers public domain, 1-meter orthoimagery for the conterminous United States with many urban areas and other locations at 2-foot or finer resolution.

Date published: April 12, 2016

The National Map Small-Scale Collection

The National Map offers a collection of small-scale datasets, most of which are at 1:1,000,000. The National Map publishes two data collections at one million-scale: one for Global Map users and one for National Map users. In terms of vector geometry, the lines, points, and areas in these data collections are identical. The difference is in the attributes assigned to these features.

Date published: March 10, 2016

Science Data Integration and Delivery

Consistent synthesis, integration, storage, and availability of fundamental data is critical to meeting the needs of USGS Science. We develop databases for hydrography, topography, invasive species, water resources, and many other datasets utilized by resource managers.

Date published: March 9, 2016

Science Data Integration and Delivery

Consistent synthesis, integration, storage, and availability of fundamental data is critical to meeting the needs of USGS Science. We develop databases for hydrography, topography, invasive species, water resources, and many other datasets utilized by resource managers. Our National Geospatial Program uses partnerships and data collection through a network assigned to the Southeast Region...

Date published: March 4, 2016

Across Trophic Level System Simulation for the Freshwater Wetlands of the Everglades and Big Cypress Swamp

Across Trophic Level System Simulation (ATLSS) is a project to develop a set of models for the Everglades and Big Cypress Swamp of South Florida. The models will support studies "to compare the future effects of alternative hydrologic scenarios on the biotic components of the system."

Date published: January 21, 2016

Streamflow and fish community diversity data for use in developing ecological limit functions for the Cumberland Plateau, northeastern Middle Tennessee and southwestern Kentucky, 2016

 Information contained within this dataset represents values of basin characteristics (see Table II in Knight and others, 2012), estimates of streamflow characteristics, measures of individual and cumulative departure of streamflow characteristics from reference hydrologic conditions, and fish species richness for 138 sites in the study area. 

Date published: September 9, 2010

Mangrove Secrets

The Sheltered Corals of Hurricane Hole, US Virgin Islands

Date published: September 14, 2006

Real-time streamflow compared to historical streamflow (Tennessee)

Map of real-time streamflow compared to historical streamflow for the day of the year (Tennessee)

Date published: September 26, 2001

Geological Survey of Alabama - Downloadable GIS datasets

Spatial/GIS data sets for Alabama are available numerous spatial data clearinghouses. Spatial/GIS data sets for USGS studies that include Alabama or include parts of Alabama are also available from USGS.

Downloadable GIS Datasets, OGB GIS Datasets, Digital Raster Graphics (DRG), 1:24000 DRG, 1:100000 DRG, 1:250000 DRG, Hazards GIS Data, Hazards Data Water GIS Data, HUC 11 Watersheds

Filter Total Items: 5,096
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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

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

Frequency of extreme freeze events controls the distribution and structure of black mangroves (Avicennia germinans) near their northern range limit in coastal Louisiana

AimClimate change is expected to result in the tropicalization of coastal wetlands in the northern Gulf of Mexico, as warming winters allow tropical mangrove forests to expand their distribution poleward at the expense of temperate salt marshes. Data limitations near mangrove range limits have hindered understanding of the effects of winter...

Osland, Michael; Day, Richard; Michot, Thomas C.

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Year Published: 2020

Near-term spatial hydrologic forecasting in Everglades, USA for landscape planning and ecological forecasting

Operational ecological forecasting is an emerging field that leverages ecological models in a new, cross-disciplinary way – using a real-time or nearly real-time climate forecast to project near-term ecosystem states. These applications give decision-makers lead time to anticipate and manage state changes that degrade ecosystem functions or...

Pearlstine, Leonard G.; Beerens, James M.; Reynolds, Gregg; Haider, Saira; McKelvy, James M.; Suir, Kevin; Romanach, Stephanie; Nestler, Jennifer H.

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Year Published: 2020

Accurate bathymetric maps from underwater digital imagery without ground control

Structure-from-Motion (SfM) photogrammetry can be used with digital underwater photographs to generate high-resolution bathymetry and orthomosaics with millimeter-to-centimeter scale resolution at relatively low cost. Although these products are useful for assessing species diversity and health, they have additional utility for quantifying benthic...

Hatcher, Gerry; Warrick, Jonathan; Ritchie, Andrew C.; Dailey, Evan; Zawada, David G.; Kranenburg, Christine; Yates, Kimberly K.

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Year Published: 2020

Small gradients in salinity have large effects on stand water use in freshwater wetland forests

Salinity intrusion is responsible for changes to freshwater wetland watersheds globally, but little is known about how wetland water budgets might be influenced by small increments in salinity. We studied a forested wetland in South Carolina, USA, and installed sap flow probes on 72 trees/shrubs along a salinity gradient. Species investigated...

Duberstein, Jamie A.; Krauss, Ken; Baldwin, M.J.; Allen, Scott T.; Conner, William H.; Salter, John S.; Miloshis, Michael

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Year Published: 2020

Divergent biotic and abiotic filtering of root endosphere and rhizosphere soil fungal communities along ecological gradients

Plant roots assemble two distinct microbial compartments: the rhizosphere (microbes in soil surrounding roots) and the endosphere (microbes within roots). Our knowledge of fungal community assembly in these compartments is limited, especially in wetlands. We tested the hypothesis that biotic factors would have direct effects on rhizosphere and...

Lumibao, Candice Y; Kimbrough, Elizabeth; Day, Richard; Conner, William H.; Krauss, Ken; Van Bael, Sunshine A

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Year Published: 2020

Hurricane Sandy effects on coastal marsh elevation change

High-magnitude storm events such as Hurricane Sandy are powerful agents of geomorphic change in coastal marshes, potentially altering their surface elevation trajectories. But how do a storm’s impacts vary across a large region spanning a variety of wetland settings and storm exposures and intensities. We determined the short-term impacts of...

Yeates, Alice G.; Grace, James; Olker, Jennifer H.; Guntenspergen, Glenn R.; Cahoon, Donald; Adamowicz, Susan C.; Anisfeld, Shimon C.; Barrett, Nels; Benzecry, Alice; Blum, Linda K.; Christian, Rober T; Grzyb, Joseph; Kracauer Hartig, Ellen; Hines Leo, Kelly; Lerberg, Scott; Lynch, James C.; Maher, Nicole; Megonigal, J Patrick; Reay, William G.; Siok, Drexel; Starke, Adam; Turner, Vincent; Warren, Scott

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Year Published: 2020

Structural impacts, carbon losses, and regeneration in mangrove wetlands after two hurricanes on St. John, U.S. Virgin Islands

Hurricanes Irma and Maria ravaged the mangroves of St. John, U.S. Virgin Islands, in 2017. Basal area losses were large (63–100%) and storm losses of carbon associated with aboveground biomass amounted to 11.9–43.5 Mg C/ha. Carbon biomass of dead standing trees increased 8.1–18.3 Mg C/ha among sites, and carbon in coarse woody debris on the forest...

Krauss, Ken; From, Andrew; Rogers, Caroline; Whelan, Kevin R.T.; Grimes, Kristen W.; Dobbs, Robert C.; Kelley, Thomas

Filter Total Items: 495
Perspective view of coastal bathymetry looking onshore, St. Thomas, US Virgin Islands
December 21, 2018

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.

Water seeping out of the ground at an exposed driveway cut into the ground.
December 3, 2018

Groundwater can flow out of the ground back to land surface.

My neighbor's driveway with some water on it... not very exciting, but it is an excellent example of how groundwater flows underground and can seep back to the land surface. This simple process demonstrates one of the basic aspects of the water cycle.

 This picture really demonstrates why there is water in many streams even after long periods of no rainfall. You

...
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.

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.

Filter Total Items: 393
Satellite captured image of the rapidly intensifying storm, Harvey
September 8, 2017

As Harvey’s record breaking rainfall and catastrophic flood waters recede in Texas and western Louisiana, U.S. Geological Survey teams are collecting high water marks, monitoring water levels and coastal change, retrieving storm tide sensors and collecting samples for water quality analysis.

Preparing to measure Irma's storm surge in Puerto Rico
September 6, 2017

 To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.

Sensor deployment
September 6, 2017

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.

Southeastern myotis with Pd - thumb
June 1, 2017

Biologists have confirmed white-nose syndrome in the southeastern bat, or Myotis austroriparius, for the first time. The species joins eight other hibernating bat species in North America that are afflicted with the deadly bat fungal disease.

Microscope image of Dolichospermum circinale, a cyanobacteria found in last year's Florida harmful algal bloom.
May 31, 2017

A new U.S. Geological Survey study that looked at the extensive harmful algal bloom that plagued Florida last year found far more types of cyanobacteria present than previously known.

Prescribed Burn at Tall Timbers Research Station
May 24, 2017

U.S. Geological Survey scientists and partners are taking technology to the next level, using unmanned aircraft systems (UAS), commonly called drones, to acquire both fire intensity and emissions data during prescribed burns.

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.

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