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: 5,079
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Year Published: 2019

Sturgeon in the Sacramento-San Joaquin watershed: new insights to support conservation and management

The goal of a day-long symposium on March 3, 2015, Sturgeon in the Sacramento–San Joaquin Watershed: New Insights to Support Conservation and Management, was to present new information about the physiology, behavior, and ecology of the green (Acipenser medirostris) and white sturgeon (Acipenser transmontanus) to help guide enhanced management and...

Klimley, A Peter; Chapman, Eric D; Cech Jr, J. J.; Cocherell, Dennis E.; Fangue, Nann A.; Gingras, Marty; Jackson, Zachary; Miller, Emily A; Mora, Ethan A.; Poletto, Jamilynn B; Schreier, Andrea M; Seesholtz, Alicia; Sulak, Kenneth J.; Thomas, Michael J.; Woodbury, David; Wyman, Megan T.

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Year Published: 2018

Water use in Louisiana, 2015

In 2015, approximately 8,720 million gallons per day (Mgal/d) of water was withdrawn from groundwater and surface-water sources in Louisiana, a 2.6 percent increase from 2010. Total groundwater withdrawals were about 1,750 Mgal/d, an increase of 12 percent from 2010, and total surface-water withdrawals were about 6,970 Mgal/d, an increase of 0.44...

Robinson, Angela L.; Sargent, B. Pierre

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Year Published: 2018

How do upwelling and El Niño impact coral reef growth? A guided, inquiry-based lesson

This lesson uses real-world data to guide students toward understanding how climate and ocean variables impact coral reef growth. To begin this activity, students hypothesize how changes in environmental conditions could affect coral reef growth. They then compare metrics for reef growth (linear growth and percent coral cover) between two reefs in...

Gravinese, Philip M.; Toth, Lauren T.; Randall, Carly J.; Aronson, Richard B.

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Year Published: 2018

Basin-scale model for predicting marsh edge erosion

Recent attempts to relate marsh edge retreat rate to wave power have met varying levels of success. Schwimmer (2001) correlated wave power to marsh boundary retreat rates over a five-year period along sites within Rehoboth Bay, Delaware, USA. Marani et al. (2011) derived a linear relationship between volumetric retreat rate and mean wave power...

Jafari, Navid H.; Chen, Qin J.; Couvillion, Brady; Johnson, Cody L.; Everett, Thomas

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Year Published: 2018

Landscape conservation design for enhancing the adaptive capacity of coastal wetlands in the face of sea-level rise and coastal development

Coastal wetlands provide many valuable benefits to people and wildlife, including critical habitat, improved water quality, reduced flooding impacts, and protected coastlines. However, in the 21st century, accelerated sea-level rise and coastal development are expected to greatly alter coastal landscapes across the globe. The future of coastal...

Osland, Michael J.; Borchert, Sinead; Enwright, Nicholas

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Year Published: 2018

Hyperspectral remote sensing of wetland vegetation

Chapter 11 by Ramsey and Rangoonwala provides an overview of how hyperspectral imaging (HSI) advances the mapping of coastal wetlands that comprise a unique variety of plant species, forms, and associations. Each description begins by seeking to uncover the relationship between canopy hyperspectral reflectance and one or more of the aggregated...

Ramsey, Elijah; Rangoonwala, Amina
Ramsey, E.W., III, and Rangoonwala, A., 2018, Hyperspectral remote sensing of wetland vegetation, in Thenkabail, P.S., Lyon, G.J., and Huete, A., eds., Hyperspectral Remote Sensing of Vegetation (Second Ed.), vol. IV, Advanced Applications in Remote Sensing of Agricultural Crops and Natural Vegetation: CRC Press, Taylor and Francis Group, Boca Raton, Chap. 11, p. 219-248, https://www.routledge.com/Advanced-Applications-in-Remote-Sensing-of-Agricultural-Crops-and-Natural/Thenkabail-Lyon-Huete/p/book/9781138364769.

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Year Published: 2018

Updated statewide abundance estimates for the Florida manatee

Knowing how many manatees live in Florida is critical for conservation and management of this threatened species. Martin et al. (2015) flew aerial surveys in 2011–2012 and estimated abundance in those years using advanced techniques that incorporated multiple data sources. We flew additional aerial surveys in 2015–2016 to count manatees and again...

Hostetler, Jeffrey A.; Edwards, Holly H.; Martin, Julien; Schueller, Paul

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Year Published: 2018

Sympatry or syntopy? Investigating drivers of distribution and co‐occurrence for two imperiled sea turtle species in Gulf of Mexico neritic waters

Animals co‐occurring in a region (sympatry) may use the same habitat (syntopy) within that region. A central aim in ecology is determining what factors drive species distributions (i.e., abiotic conditions, dispersal limitations, and/or biotic interactions). Assessing the degree of biotic interactions can be difficult for species with wide ranges...

Hart, Kristen M.; Iverson, Autumn R.; Fujisaki, Ikuko; Lamont, Margaret M.; Bucklin, David N.; Shaver, Donna J.

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Year Published: 2018

Sediment data from vibracores collected in 2016 from Fire Island, New York

Researchers from the U.S. Geological Survey (USGS) conducted a long-term coastal morphologic-change study at Fire Island, New York, prior to and after Hurricane Sandy impacted the area in October 2012. The Fire Island Coastal Change project objectives include understanding the morphologic evolution of the barrier island system on a...

Buster, Noreen A.; Bernier, Julie C.; Brenner, Owen T.; Kelso, Kyle W.; Tuten, Thomas M.; Miselis, Jennifer L.
Buster, N.A., Bernier, J.C., Brenner, O.T., Kelso, K.W., Tuten, T.M., and Miselis, J.L., 2018, Sediment data from vibracores collected in 2016 from Fire Island, New York: U.S. Geological Survey Data Series 1100, https://doi.org/10.3133/ds1100.

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Year Published: 2018

Agricultural conservation practice implementation in the Chesapeake Bay watershed supported by the U.S. Department of Agriculture

The U.S. Department of Agriculture (USDA) provides cost-share funding and technical assistance to support the implementation of agricultural conservation practices on farms throughout the Chesapeake Bay watershed. Conservation implementation has been substantial in the time period for which digital records are available (from 2007 through 2017)....

Hively, W. Dean; Devereux, Olivia H.; Keisman, Jennifer L.D.
Hively, W.D., Devereux, O.H., and Keisman, J.L.D., 2018, Agricultural conservation practice implementation in the Chesapeake Bay watershed supported by the U.S. Department of Agriculture: U.S. Geological Data Series 1102, 46 p., https://doi.org/10.3133/ds1102.

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Year Published: 2018

Analysis of multi-decadal wetland changes, and cumulative impact of multiple storms 1984 to 2017

Land-cover classification analysis using Landsat satellite imagery acquired between 1984 and 2017 quantified short- (post-Hurricane Sandy) and long-term wetland-change trends along the Maryland and Virginia coasts between Metompkin Bay, VA and Ocean City, MD. Although there are limited options for upland migration of wetlands in the study area,...

Douglas, Steven H.; Bernier, Julie C.; Smith, Kathryn E.L.

Filter Total Items: 495
Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 6 of 15: Sinkhole chimney at approximately 12 noon. View to south across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 7 of 15: Cars in a sinkhole. Auto mechanic’s garage starting to collapse into sinkhole. View to south across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 8 of 15: Community pool prior to collapse into the sinkhole. View to north across the sinkhole. (1:30 p.m)

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 9 of 15: Community pool collapsing into sinkhole at. Pool was roughly Olympic-sized and was about half full at the time of collapse. Impressive sounds of the rebar and concrete snapping, then the rush of water. View to north across the sinkhole. (1:30 p.m)

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 10 of 15: Sinkhole chimney after pool collapse. View to south across the sinkholne. For a time after the pool collapse and introduction of the pool water into the sinkhole, there was a noticeable increase in slope movement, especially deeper in the sinkhole. The house and building parts broke up further and disappeared. The steeper slope of the chimney or throat of

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Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 11 of 15: Intersection of South Denning Drive and West Comstock Ave. Sinkhole is edging close to Denning Drive. One block of Comstock Ave was swallowed. View to south on Denning Drive adjacent to the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 12 of 15: Water level has risen and is now apparent in sinkhole since pool collapse and house swallowed. View to south across the sinkhole. The rising water level is likely a result of the debris plugging the conduit into the Floridan aquifer. Water level is rising to assume a position more consistent with that of the surficial aquifer. (3 p.m.)

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 13 of 15: Water level in sinkhole chimney continued to rise. View to east across the sinkhole. (6 p.m.)

View of river and bridge from webcam

Big Creek near Alpharetta (02335700)

We have installed a webcam at the Big Creek near Alpharetta to allow you to view, in real time, the current river-stage conditions.

During periods of flooding, the South Atlantic Water Science Center - Georgia will take control of the camera.

Camera is sponsored by the USGS National Streamflow Information Program (

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A small stream in Alabama disappearing into Russell cave, recharging groundwater.

A small stream in Georgia disappearing into a cave (infiltration).

Surface water disappears into a cave on the fast track to become groundwater.

A small stream disappearing into Russell Cave, Alabama.

Follow Region 2 activities on social media, get contact information for Region 2 USGS centers, and meet Region 2's staff and center directors.