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We conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens and landscapes of the Southeastern United States and the Caribbean region.

Filter Total Items: 232
Field irrigation using center pivot method - Mississippi
June 23, 2017

The objective of the Mississippi water-use effort is to collect site-specific or aggregated water-use information to be used in studying and managing the water resources of our State, to store the information in a computerized data base, and to disseminate it to the public through reports and publications.

Harrison County Mississippi Picture
June 23, 2017

The USGS collects water-quality samples from about 25 wells (of an approximately 100-well network), annually in order to determine and evaluate the ground-water resources of Harrison County, Mississippi. Since 1997, water samples have been collected at selected wells screened in the Citronelle, Graham Ferry, Pascagoula, Hattiesburg, and Catahoula Sandstone aquifers and are analyzed for field...

Jackson, Mississippi
June 23, 2017

Long-term water-level records are needed to evaluate the effects of climatic variations on the recharge to and discharge from the ground-water systems, to provide a data base from which to measure the effects of development, to assist in the prediction of future supplies, and to provide data for management of the resource.

Shreveport Area—Caddo and Bossier Parishes
June 23, 2017

Flooding is a concern for everyone in Louisiana. Floods demand immediate and decisive action by governmental entities, businesses, and individual citizens, all of whom have to make critical decisions that directly impact the extent, duration, and mitigation of losses resulting from flooding. How high will the water get? How long will the flood last? What areas will be affected? What roads will...

Mississippi State Map
June 23, 2017

The U.S. Geological Survey, in cooperation with the Mississippi Department of Environmental Quality, U.S. Department of Agriculture-Natural Resources Conservation Service, Mississippi Department of Transportation, U.S. Department of Agriculture-Forest Service, and the Mississippi Automated Resource INformation System developed a 1:24,000-scale Watershed Boundary Dataset for Mississippi...

Hattiesburg Flood Inundation Map
June 23, 2017

Floods are the most common and widespread of all natural disasters in the United States and are the leading cause of weather related deaths. Advances in technology have improved warning systems and have helped to decrease the loss of life over the past 50 years. Several sources of information are available to citizens and public officials to help make timely decisions regarding flood awareness...

Hardened Gages—Built to Survive
June 23, 2017

1 June 2010

Hurricane season starts today, and the USGS Lower Mississippi Gulf Water Science Center is committed to collecting and providing the most up-to-date information before, during, and after the storms that are sure to come our way. When a hurricane or tropical storm is approaching, accurate and timely storm data are crucial in making good decisions regarding personal safety and...

Hurricane Irene, satellite view, NASA
June 23, 2017

USGS Information and Links

Hurricane Hazards—A National Threat (fact sheet)

USGS Natural Hazards - Hurricanes

Hurricane Forecast Information

National Hurricane Center—(NWS)

Current Tropical Forecast Information

GOES-8 Atlantic Infrared Imagery

GOES-8 Atlantic Visible Imagery

Earth Scan Laboratory—(LSU)

GOES-8...

WERC marsh during a storm
June 23, 2017

USGS Louisiana Coastal Sites

Hurricane season starts today, and the USGS Lower Mississippi Gulf Water Science Center is committed to collecting and providing the most up-to-date information before, during, and after the storms that are sure to come our way. When a hurricane or tropical storm is approaching, accurate and timely storm data is crucial in making good decisions regarding...

Hurricane Joaquin seen from space
June 23, 2017

River and Coastal Forecasts

The USGS is not a forecasting agency, but the National Weather Service (NWS) is, and they make extensive use of the data we collect in their effort to provide you with the most accurate and up-to-date forecasts of many Louisiana rivers and streams, and weather along the coast. The links below will provide you with direct access to the NWS forecasts for...

Flow diagram of relationships between watershed stressors and aquatic health
April 12, 2017

How is stream ecology affected by chemical and physical stressors in small streams? The U.S. Geological Survey (USGS) is addressing this question through studies of relations between stressors and stream ecology across large regions of the United States.

Regional Stream Quality Assessments  ||  ...

Blue tilapia (Oreochromis aureus)
March 22, 2017

22-23 March 2017 - Ten teams of fishery biologists sampled 28 sites amid unexpected wildfires in the Big Cypress National Preserve over the two day period. On the second day a reporter from the Miami Herald accompanied a ground crew team.

Filter Total Items: 181
Year Published: 2017

Development of the oriental latrine fly, Chrysomya megacephala (Diptera: Calliphoridae), at five constant temperatures

Chrysomya megacephala (Fabricius) is a forensically important fly that is found throughout the tropics and subtropics. We calculated the accumulated development time and transition points for each life stage from eclosion to adult emergence at five constant temperatures: 15, 20, 25, 30, and 35 °C. For each transition, the 10th, 50th, and 90th...

Gruner, S. V.; Slone, D.H.; Capinera, J.L.; Turco, M. P.
Gruner, S.V., Slone, D.H., Capinera, J.L., and Turco, M.P., 2016, Development of the oriental latrine fly, Chrysomya megacephala (Diptera: Calliphoridae), at five constant temperatures: Journal of Medical Entomology, First Online, http://dx.doi.org/10.1093/jme/tjw169.

Year Published: 2017

Detection limits of quantitative and digital PCR assays and their influence in presence-absence surveys of environmental DNA

A set of universal guidelines is needed to determine the limit of detection (LOD) in PCR-based analyses of low concentration DNA. In particular, environmental DNA (eDNA) studies require sensitive and reliable methods to detect rare and cryptic species through shed genetic material in environmental samples. Current strategies for assessing...

Hunter, Margaret; Dorazio, Robert M.; Butterfield, John S.; Meigs-Friend, Gaia; Nico, Leo; Ferrante, Jason
Hunter, M.E., Dorazio, R.M., Butterfield, J.S.S., Meigs-Friend, G., Nico, L.G., and Ferrante, J.A., 2016, Detection limits of quantitative and digital PCR assays and their influence in presence-absence surveys of environmental DNA: Molecular Ecology Resources, Accepted Online Early, http://dx.doi.org/10.1111/1755-0998.12619.

Year Published: 2017

A landscape-scale assessment of above- and belowground primary production in coastal wetlands: Implications for climate change-induced community shifts

Above- and belowground production in coastal wetlands are important contributors to carbon accumulation and ecosystem sustainability. As sea level rises, we can expect shifts to more salt-tolerant communities, which may alter these ecosystem functions and services. Although the direct influence of salinity on species-level primary production has...

Stagg, Camille L.; Schoolmaster, Donald R.; Piazza, Sarai C.; Snedden, Gregg; Steyer, Gregory D.; Fischenich, Craig J; McComas, Robert W.
Stagg, C.L., Schoolmaster, D.R., Jr., Piazza, S.C., Snedden, G., Steyer, G.D., Fischenich, C.J., and McComas, R.W., 2016, A landscape-scale assessment of above- and belowground primary production in coastal wetlands: implications for climate change-induced community shifts: Estuaries and Coasts, First Online, http://dx.doi.org/10.1007/s12237-016-0177-y.

Year Published: 2017

Mangrove expansion and contraction at a poleward range limit: Climate extremes and land-ocean temperature gradients

Within the context of climate change, there is a pressing need to better understand the ecological implications of changes in the frequency and intensity of climate extremes. Along subtropical coasts, less frequent and warmer freeze events are expected to permit freeze-sensitive mangrove forests to expand poleward and displace freeze-tolerant salt...

Osland, Michael J.; Day, Richard H.; Hall, Courtney T.; Brumfield, Marisa D; Dugas, Jason; Jones, William R.

Year Published: 2017

Litterfall production of mangroves in the Huizache-Caimanero lagoon system, México

The ecological legacy of the Huizache-Caimanero lagoon system has long been known as a trophically rich and productive ecosystem that supported artisanal fisheries of local and regional importance; however, a decline in fisheries' yields has been observed in recent decades. Mangroves are a fundamental component of this ecosystem, though data...

Flores-Cárdenas, Francisco; Hurtado-Oliva, Miguel Ángel; Doyle, Thomas W.; Nieves-Sotol, Mario; Díaz-Castro, Sara; Manzano-Sarabia, Marlenne
Flores-Cárdenas, F., Hurtado-Oliva, M.A., Doyle, T.W., Nieves-Soto, M., Díaz-Castro, S., and Manzano-Sarabia, M., xxxx, Litterfall production of mangroves in Huizache-Caimanero lagoon system, México, Journal of Coastal Research, Online Ahead of Print, http://dx.doi.org/10.2112/JCOASTRES-D-15-00242.1.

Year Published: 2017

Hydrologic modeling in a marsh-mangrove ecotone: Predicting wetland surface water and salinity response to restoration in the Ten Thousand Islands region of Florida, USA

At the fringe of Everglades National Park in southwest Florida, United States, the Ten Thousand Islands National Wildlife Refuge (TTINWR) habitat has been heavily affected by the disruption of natural freshwater flow across the Tamiami Trail (U.S. Highway 41). As the Comprehensive Everglades Restoration Plan (CERP) proposes to restore the natural...

Michot, B.D.; Meselhe, E.A.; Krauss, Ken W.; Shrestha, Surendra; From, Andrew S.; Patino, Eduardo
Michot, B., Meselhe, E., Krauss, K., Shrestha, S., From, A., and Patino, E., 2015, Hydrologic modeling in a marsh-mangrove ecotone: predicting wetland surface water and salinity response to restoration in the Ten Thousand Islands region of Florida, USA: Journal of Hydrologic Engineering, D4015002, http://dx.doi.org/10.1061/(ASCE)HE.1943-5584.0001260.

Year Published: 2016

Status of scientific knowledge, recovery progress, and future research directions for the Gulf Sturgeon, Acipenser oxyrinchus desotoi Vladykov, 1955

The Gulf Sturgeon, Acipenser oxyrinchus desotoi, is an anadromous species of Acipenseridae and native to North America. It currently inhabits and spawns in the upper reaches of seven natal rivers along the northern coast of the Gulf of Mexico from the Suwannee River, Florida, to the Pearl River, Louisiana, during spring to autumn. Next to the...

Sulak, Kenneth J.; Parauka, F; Slack, W. Todd; Ruth, T; Randall, Michael; Luke, K; Mette, M. F; Price, M. E
Sulak, K. J., Parauka, F., Slack, W.T., Ruth, R.T., Randall, M.T., Luke, K., Mettee, M.F., and Price, M.E., 2016, Status of scientific knowledge, recovery progress, and future research directions for the Gulf Sturgeon, Acipenser oxyrinchus desotoi Vladykov, 1955: Journal of Applied Ichthyology, v. 32, suppl. 1, p. 87-161, http://dx.doi.org/10.1111/jai.13245.

Year Published: 2016

Lithobates sylvaticus (wood frog)

A single specimen found southwest of Hattiesburg in Timberton (31.270391oN, 89.327675oW; WGS 84). 23 July 2015. Gary, Kat, and Ron Lukens. Verifi ed by Kenneth Krysko, Florida Museum of Natural History (UF-Herpetology 176455). This species has never been recorded from the state of Mississippi before (Dodd 2013. Frogs of the United States and...

Fuller, Pam
Fuller, P., 2016, Lithobates sylvaticus (wood frog), Geographic Distribution Note: Collinsorum, v. 5, no. 4, p. 17, http://www.cnah.org/khs/khs_pubs/Collinsorum_5_4.pdf.

Year Published: 2016

Are we working towards global research priorities for management and conservation of sea turtles?

In 2010, an international group of 35 sea turtle researchers refined an initial list of more than 200 research questions into 20 metaquestions that were considered key for management and conservation of sea turtles. These were classified under 5 categories: reproductive biology, biogeography, population ecology, threats and conservation strategies...

Rees, A.F.; Alfaro-Shigueto, J.; Barata, P.C.R.; Bjorndal, K.A.; Bolten, A.B.; Bourjea, J.; Broderick, A.C.; Campbell, L.M.; Cardona, L.; Carreras, C.; Casale, P.; Ceriani, S.A.; Dutton, P.H.; Eguchi, T.; Formia, A.; Fuentes, M.M.P.B.; Fuller, W.J.; Girondot, M.; Godfrey, M.H.; Hamann, M.; Hart, Kristen M.; Hays, G.C.; Hochscheid, S.; Kaska, Y.; Jensen, M.P.; Mangel, J.C.; Mortimer, J.A.; Naro-Maciel, E.; Ng, C.K.Y.; Nichols, W.J.; Phillott, A.D.; Reina, R.D.; Revuelta, O.; Schofield, G.; Seminoff, J.A.; Shanker, K.; Tomás, J.; van de Merwe, J.P.; Van Houtan, K.S.; Vander Zanden, H.B.; Wallace, B.P.; Wedemeyer-Strombel, K.R.; Work, Thierry M.; Godley, B.J.

Year Published: 2016

Overcoming challenges to the recovery of declining amphibian populations in the United States

The US Endangered Species Act of 1973 (ESA) affords many potential benefits to species threatened with extinction. However, most at-risk amphibians—one of the most imperiled vertebrate groups—remain unlisted under the provisions of the ESA, and many impediments to recovery exist for those species that have been listed. Of the 35 US amphibian...

Walls, Susan; Ball, Lianne C.; Barichivich, William J.; Dodd, Kenneth; Enge, Kevin M; Gorman, Thomas A.; O'Donnell, Katherine; Palis, John G; Semlitsch, Raymond D.
Walls, S.C., Ball, L.C., Barichivich, W.J., Dodd, C.K., Jr., Enge, K.M., Gorman,T.A., O'Donnell, K.M., Palis, J.G., and Semlitsch, R.D., 2016, Overcoming challenges to the recovery of declining amphibian populations in the United States: BioScience, First Online, http://dx.doi.org/10.1093/biosci/biw153.

Year Published: 2016

The practice of prediction: What can ecologists learn from applied, ecology-related fields?

The pervasive influence of human induced global environmental change affects biodiversity across the globe, and there is great uncertainty as to how the biosphere will react on short and longer time scales. To adapt to what the future holds and to manage the impacts of global change, scientists need to predict the expected effects with some...

Pennekamp, Frank; Adamson, Matthew; Petchey, Owen L; Poggiale, Jean-Christophe; Aguiar, Maira; Kooi, Bob W.; Botkin, Daniel B.; DeAngelis, Don
Pennekamp, F., Adamson, M.W., Petchey, O.L., Poggiale, J.-C., Aguiar, M., Kooi, B.W., Botkin, D.B., and DeAngelis, D.L., 2016, The practice of prediction: What can ecologists learn from applied, ecology-related fields?: Ecological Complexity, Available Online, http://dx.doi.org/10.1016/j.ecocom.2016.12.005.

Year Published: 2016

Barrier island breach evolution: Alongshore transport and bay-ocean pressure gradient interactions

Physical processes controlling repeated openings and closures of a barrier island breach between a bay and the open ocean are studied using aerial photographs and atmospheric and hydrodynamic observations. The breach site is located on Pea Island along the Outer Banks, separating Pamlico Sound from the Atlantic Ocean. Wind direction was a major...

Safak, Ilgar; Warner, John C.; List, Jeffrey
Safak, I., J. C. Warner, and J. H. List (2016), Barrier island breach evolution: Alongshore transport and bay-ocean pressure gradient interactions, J. Geophys. Res. Oceans, 121, doi:10.1002/2016JC012029.

Filter Total Items: 67
Two men mark a high-water mark on a structure
August 26, 2016
Daniel McCay and Chris Henry, USGS hydrologic technicians, use a level to draw a line on a high-water mark August 26. In most circumstances, when a high-water mark is flagged it would then be surveyed with GPS equipment to obtain its exact coordinates and elevation. However, because of the possibility of more storms hitting Louisiana the teams were initially only flagging marks at first, in order...
August 15, 2016
The view on South Sherwood Forest Blvd near the USGS Louisiana Water Science Center office on August 15, 2016.
Image shows a flooded street with green median
August 13, 2016
Backwater flooding across Florida Blvd near the Amite River Bridge in Denham Springs, LA.
Image shows flooded houses and vehicles
August 13, 2016
A flooded neighborhood near the confluence of the Comite and Amite Rivers near Denham Springs, LA.
Image shows a flooded house with trees in the background
August 13, 2016
A flooded house near the confluence of the Comite and Amite Rivers near Denham Springs, LA.
Newly discovered cavefish species, the Oaxaca Cave Sleeper
2016 (approx.)
This Oaxaca Cave Sleeper is one of thirteen specimens collected from a cave beneath a reservoir on Mexico's Tonto River. It lacks eyes, is unpigmented, and has sensory adaptations characteristic of fish that live in total darkness. Thuis is the holotype, the example used to describe and name this newly identified species. Credit: Howard L. Jelks and Stephen J. Walsh, USGS
As US models predicted Hurricane Joaquin washed out a road at Kitty Hawk, NC in 2015.
2016 (approx.)
As US models predicted Hurricane Joaquin washed out a road at Kitty Hawk, NC in 2015.
Digital Elevation Model in the Atchafalaya Basin, LA
2016 (approx.)
Digital Elevation Model in the Atchafalaya Basin, LA
 Beach erosion at Rodanthe, NC, along the coast on August 30, 2011, three days after landfall of Hurricane Irene
April 14, 2016
Oblique aerial photograph near Rodanthe, NC, along the coast on August 30, 2011, three days after landfall of Hurricane Irene. A breach was carved through the barrier island, severing NC Highway 12. The storm surge was approximately 2 m high on the sound-side and was less on the ocean-side. Flow from the sound to the ocean may have played a role in cutting the breaches between Oregon Inlet and...
A colony of the soft coral known as the "bent sea rod" stands bleached on a reef off of Islamorada, Florida.
April 12, 2016
A colony of the soft coral known as the "bent sea rod" stands bleached on a reef off of Islamorada, Florida. Hard and soft corals are presently bleaching- losing their symbiotic algae – all over the coral reefs of the Florida Keys due to unusually warm ocean temperatures this summer. Months with waters warmer than 85 F have become more frequent in the last several decades compared to a century...
January 30, 2016
This video was shot in Three Sisters Springs at the Crystal River National Wildlife Refuge, Florida. The footage was captured using a GoPro while conducting health check-ups and taking photography for population research on Jan. 30, 2014. Special Thanks Dr. Bob Bonde, USGS and the dozens of volunteers who conduct annual manatee health assessments. Music "Music for Manatees" Kevin MacLeod (...
Filter Total Items: 69
Catawba rhododendron blooming at Round Bald, NC
August 11, 2016

“From the mountains to the coast, the southeastern U.S. contains ecosystems that harbor incredible biodiversity. Many of those ecosystems are already highly at risk from urbanization and other human land-use change. Identifying the ecosystems at risk from climate change will help inform conservation and management to ensure we don’t lose that biodiversity.” (Jennifer Constanza, report author)

USGS science for a changing world logo
March 14, 2016

The U.S. Geological Survey has created 20 new flood inundation maps that can help South Carolinians take steps to prevent or reduce future flood damage in the areas affected by the widespread floods of October 2015.

A juvenile Broad-banded Watersnake that tested positive for snake fungal disease (SFD) exhibiting ulceration of the skin.
March 1, 2016

Snake fungal disease, or SFD, a disease causing high mortality rates in some species of snakes, has been found in Louisiana for the first time, according to a new study by U.S. Geological Survey scientists. SFD now has been confirmed in at least 16 states in the Eastern and Midwestern United States.

USGS logo
January 15, 2016

Significant flood peaks occurred across the Arkansas, White and Red River Basins in Arkansas beginning on Dec. 26 and the rivers are still high, according to the U.S. Geological Survey.

Hydrograph of White River at Augusta, Arkansas, December 24-31, 2015. Left side shows Gage height 31-36 feet. Bottom is days.
December 31, 2015

Heavy rainfall of up to 10 inches in northern and western Arkansas that fell during the Christmas weekend is still causing major flooding in some areas.

USGS logo
November 17, 2015

Fact sheets that detail information about parish water resources and water-use are available online for 34 of the state’s 64 parishes, with more coming soon.

USGS logo
November 10, 2015

A new interactive Flood Inundation Map to improve flood warnings and assist with emergency management along Big Creek in Alpharetta and Roswell, Georgia, was debuted during a ceremony today in Alpharetta’s Rock Mill Park.

Gator
October 28, 2015

Alligators and the Everglades go hand-in-hand, and as water conditions change in the greater Everglades ecosystem, gators are one of the key species that could be affected.

Satellite image of the Gulf of Mexico and coastline, Gulf Hypoxic Zone
October 19, 2015

Hypoxia sounds as bad as it is. It refers to an environment that is too low on oxygen to sustain most aerobic life, particularly an aquatic environment. Hypoxia is most problematic when it happens where oxygen is normally plentiful, because most living organisms require oxygen to continue living.

Image: USGS Scientist Inspects Streamgage During Flooding Event
October 5, 2015

Heavy rains and hazardous weather conditions are occurring in western South Carolina, with record flooding occurring and more expected over parts of the region over the next several days.