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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: 229
Map of below normal 7-day average streamflow compared to historical streamflow for the day of year (Tennessee)
June 26, 2017

This map (from USGS's National Drought Watch Web site) shows the 7-day average streamflow conditions in hydrologic units. Thus, the map shows conditions adjusted for this time of the year. The colors represent 7-day average streamflow percentiles for the day of the year. USGS sites having at least 30 years of record are used. The data used to produce this map are provisional and...

Duck River above Milltown Tennessee - Photograph
June 26, 2017

Basic hydrologic data collection at selected streams in Tennessee

Cypress Swamp Egret - Louisiana
June 24, 2017

Links to Sources of Water Information

The U.S. Geological Survey (USGS) investigates the occurrence, quantity, quality, distribution, and movement of surface and underground waters and disseminates the data to the public, State and local governments, public and private utilities, and other Federal agencies involved with managing water resources

The map to the left allows you to...

Mississippi DroughWatch Map
June 23, 2017

To view the interactive map for Mississippi DroughWatch click here.

Gulf of Mexico Coastal Monitoring Sites
June 23, 2017

To view the interactive map of the Gulf of Mexico Coastal Monitoring Sites click here.

Mississippi Flood Watch Map
June 23, 2017

To view the interactive map for Mississippi FloodWatch click here.

Mississippi/Atchafalaya River Basins - SPARROW
June 23, 2017

SPARROW, a modeling tool for the regional interpretation of water-quality monitoring data. The model relates in-stream water-quality measurements to spatially referenced characteristics of watersheds, including contaminant sources and factors influencing terrestrial and aquatic transport. SPARROW empirically estimates the origin and fate of contaminants in river networks and quantifies...

Biloxi, MS Bridge after Hurricane Katrina
June 23, 2017

The U.S. Geological Survey (USGS) works closely with the Mississippi Department of Transportation (MDOT) to provide information to be used by the MDOT for economical and optimum design of highway-drainage structures. The MDOT spends millions of dollars annually for highway construction. Streamflow records, hydrologic analyses of basins, and hydraulic analyses of the flooding potential at...

National Water-Quality Assessment Program Map 1991-2001
June 23, 2017

The National Water-Quality Assessment (NAWQA) Program is designed to describe the status and trends in the quality of the Nation's surface-water and ground-water resources and to provide a sound understanding of the natural and human factors that affect the quality of these resources. As part of the program, investigations will be conducted in approximately 60 areas -- called study units...

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.

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.

USGS National Water Data Portal
Filter Total Items: 31
MsCIP logo
April 21, 2016

Mississippi Coastal Improvements Program (MsCIP) Barrier Island Restoration

MsCIP was developed in 2009 by the U.S. Army Corps of Engineers, Mobile District, in conjunction with other Federal and State agencies, to help reduce future storm damage along the Mississippi Gulf coast. In 2014, in cooperation with the USACE Mobile District, WARC's Advanced Applications Team began development on the MsCIP Data Viewer, an interactive web-mapping environment. 

JEM logo
April 20, 2016

Joint Ecosystem Modeling (JEM) Support

The JEM community of practice is focused on ecological modeling and monitoring across the Greater Everglades, with particular interest in habitats, how various factors affect habitat change, and how the organisms dependent on those habitats respond today and into the future.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

Elevation Data

The 3DEP products and services available through The National Map consist of lidar point clouds (LPC), standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Fish on seafloor, Offshore Northern California
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.

Lidar data of the Gulf Islands, Florida
March 17, 2016

Coastal and Marine Geoscience Data System

Site provides access to Coastal and Marine Geology Program (CMGP) data via Open Geospatial Consortium (OGC) standards services; serving data to GeoMapApp and Virtual Ocean 2-D and 3-D earth browsing tools, for data integration, visualization and analysis; and metadata catalogs for data discovery.

Gaging station on the Tanana River at Nenana, Alaska
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.

USGS science for a changing world logo
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 Office.
National Geospatial Program
Geospatial Liaison Network
Lidar for Science and Resource Management
Louisiana Sedimentary and Environmental Database (LASED)
Core Archive Database for the St. Petersburg Coastal and Marine Science Center

Filter Total Items: 181
Year Published: 2017

Molecular systematics of the critically-endangered North American spinymussels (Unionidae: Elliptio and Pleurobema) and description of Parvaspina gen. nov.

Despite being common in numerous marine bivalve lineages, lateral spines are extremely rare among freshwater bivalves (Bivalvia: Unionidae), with only three known species characterized by the presence of spines: Elliptio spinosa, Elliptio steinstansana, and Pleurobema collina. All three taxa are endemic to the Atlantic Slope of southeastern North...

Perkins, Michael A.; Johnson, Nathan A.; Gangloff, Michael M.
Perkins, M.A., Johnson, N.A., and Gangloff, M.M., 2017, Molecular systematics of the critically-endangered North American spinymussels (Unionidae: Elliptio and Pleurobema) and description of Parvaspina gen. nov.: Conservation Genetics, First Online, 13 p., http://dx.doi.org/10.1007/s10592-017-0924-z.

Year Published: 2017

Comparison of climate envelope models developed using expert-selected variables versus statistical selection

Climate envelope models are widely used to describe potential future distribution of species under different climate change scenarios. It is broadly recognized that there are both strengths and limitations to using climate envelope models and that outcomes are sensitive to initial assumptions, inputs, and modeling methods Selection of predictor...

Brandt, Laura A.; Benscoter, Allison; Harvey, Rebecca G.; Speroterra, Carolina; Bucklin, David N.; Romanach, Stephanie; Watling, James I.; Mazzotti, Frank J.
Brandt, L.A., Benscoter, A.M., Harvey, R., Speroterra, C., Bucklin, D., Romanach, S.S., Watling, J.I., and Mazzotti, F.J., 2017, Comparison of climate envelope models developed using expert-selected variables versus statistical selection: Ecological Modelling, v. 345, p. 10-20, http://dx.doi.org/10.1016/j.ecolmodel.2016.11.016.

Year Published: 2017

Macroclimatic change expected to transform coastal wetland ecosystems this century

Coastal wetlands, existing at the interface between land and sea, are highly vulnerable to climate change. Macroclimate (for example, temperature and precipitation regimes) greatly influences coastal wetland ecosystem structure and function. However, research on climate change impacts in coastal wetlands has concentrated primarily on sea-level...

Gabler, Christopher A.; Osland, Michael J.; Grace, James B.; Stagg, Camille L.; Day, Richard H.; Hartley, Stephen B.; Enwright, Nicholas M.; From, Andrew; McCoy, Meagan L.; McLeod, Jennie L.
Gabler, C.A., Osland, M.J., Grace, J.B., Stagg, C.L., Day, R.H., Hartley, S.B., Enwright, N.M., From, A.S., McCoy, M.L., and McLeod, J.L., 2017, Macroclimatic change expected to transform coastal wetland ecosystems this century: Nature Climate Change, Advanced Online, http://dx.doi.org/10.1038/nclimate3203.

Year Published: 2017

Signals of impending change

Society has an increasing awareness that there are finite limits to what we can expect the planet to absorb and still provide goods and services at current rates1. Both historical reconstructions and contemporary events continue to remind us that ecological regime changes are often abrupt rather than gradual. This reality motivates researchers who...

Grace, James B.
Grace, J.B., 2017, Signals of impending change: Nature Ecology and Evolution, v. 1, art. 0047, http://dx.doi.org/10.1038/s41559-016-0047.

Year Published: 2017

Life history plasticity does not confer resilience to environmental change in the mole salamander (Ambystoma talpoideum)

Plasticity in life history strategies can be advantageous for species that occupy spatially or temporally variable environments. We examined how phenotypic plasticity influences responses of the mole salamander, Ambystoma talpoideum, to disturbance events at the St. Marks National Wildlife Refuge (SMNWR), FL, USA from 2009 to 2014. We observed...

Courtney L. Davis; David A.W. Miller; Walls, Susan; Barichivich, William J.; Riley, Jeffrey W.; Brown, Mary E.
Davis, C.L., Miller, D.A.W., Walls, S.C., Barichivich, W.J., Riley, J., and Brown, M.E., 2017, Life history plasticity does not confer resilience in the mole salamander (Ambystoma talpoideum): Oecologia, Online Early, 17 p., http://dx.doi.org/10.1007/s00442-017-3810-y.

Year Published: 2017

Climatic controls on the global distribution, abundance, and species richness of mangrove forests

Mangrove forests are highly productive tidal saline wetland ecosystems found along sheltered tropical and subtropical coasts. Ecologists have long assumed that climatic drivers (i.e., temperature and rainfall regimes) govern the global distribution, structure, and function of mangrove forests. However, data constraints have hindered the...

Osland, Michael J.; Feher, Laura; Griffith, Kereen; Cavanaugh, Kyle C.; Enwright, Nicholas M.; Day, Richard H.; Stagg, Camille L.; Krauss, Ken W.; Howard, Rebecca J.; Grace, James B.; Rogers, Kerrylee
Osland, M.J., Feher, L.C., Griffith, K.T., Cavanaugh, K.C., Enwright, N.M., Day, R.H., Stagg, C.L., Krauss, K.W., Howard, R.J., Grace, J.B., and Rogers, K., 2016, Climatic controls on the global distribution, abundance, and species richness of mangrove forests: Ecological Monographs, Accepted Online, http://dx.doi.org/10.1002/ecm.1248.

Year Published: 2017

A modeling study of the impacts of Mississippi River diversion and sea-level rise on water quality of a deltaic estuary

Freshwater and sediment management in estuaries affects water quality, particularly in deltaic estuaries. Furthermore, climate change-induced sea-level rise (SLR) and land subsidence also affect estuarine water quality by changing salinity, circulation, stratification, sedimentation, erosion, residence time, and other physical and ecological...

Wang, Hongqing; Chen, Qin; Hu, Kelin; LaPeyre, Megan K.

Year Published: 2017

Volume of larvae Is the most important single predictor of mass temperatures in the forensically important Calliphorid, Chrysomya megacephala (Diptera: Calliphoridae)

Calliphorid species form larval aggregations that are capable of generating heat above ambient temperature. We wanted to determine the relationship between volume, number of larvae, and different combinations of instars on larval mass heat generation. We compared different numbers of Chrysomya megacephala (F.) larvae (40, 100, 250, 600, and 2,000...

Gruner, S. V.; Slone, D.H.; Capinera, J.L.; Turco, M. P.

Year Published: 2017

Estimating occurrence and detection probabilities for stream-breeding salamanders in the Gulf Coastal Plain

Large gaps exist in our knowledge of the ecology of stream-breeding plethodontid salamanders in the Gulf Coastal Plain. Data describing where these salamanders are likely to occur along environmental gradients, as well as their likelihood of detection, are important for the prevention and management of amphibian declines. We used presence/absence...

Lamb, Jennifer Y.; Waddle, J. Hardin; Qualls, Carl P.
Lamb, J.Y., Waddle, J.H., and Qualls, C.P., 2017, Estimating occurrence and detection probabilities for stream-breeding salamanders in the Gulf Coastal Plain: Journal of Herpetology, Online Ahead of Print, http://www.journalofherpetology.org/doi/abs/10.1670/16-050.

Year Published: 2017

Spatially explicit modeling in ecology: A review

The use of spatially explicit models (SEMs) in ecology has grown enormously in the past two decades. One major advancement has been that fine-scale details of landscapes, and of spatially dependent biological processes, such as dispersal and invasion, can now be simulated with great precision, due to improvements in computer technology. Many areas...

DeAngelis, Donald L.; Yurek, Simeon

Year Published: 2017

Soils mediate the impact of fine woody debris on invasive and native grasses as whole trees are mechanically shredded into firebreaks in piñon-juniper woodlands

To stem wildfires, trees are being mechanically shredded into firebreaks with the resulting fine woody debris (FWD) potentially exerting immense control over soil and plants. We linked FWD-induced changes in microbial activity and nutrient availability to the frequency of Bromus tectorum and three native, perennial grasses across 31 piñon-juniper...

Aanderud, Zachary T.; Schoolmaster, Donald R.; Rigby, Deborah; Bybee, Jordon; Campbell, Tayte; Roundy, Bruce A.
Aanderud, Z.T., Schoolmaster, D.R., Rigby, D., Bybee, J., Campbell, T., and Roundy, B., 2017, Soils mediate the impact of fine woody debris on invasive and native grasses as whole trees are mechanically shredded into firebreaks in piñon-juniper woodlands: Journal of Arid Environments, v. 137, p. 60-68, http://dx.doi.org/10.1016/j.jaridenv.2016.11.002.

Year Published: 2017

Extinction debt as a driver of amphibian declines: An example with imperiled flatwoods salamanders

A comprehensive view of population declines and their underlying causes is necessary to reverse species loss. Historically, in many cases, a narrow view may have allowed species declines to continue, virtually undetected, for long periods of time (perhaps even decades). We suggest that extinction debt is likely responsible for numerous (perhaps...

Semiltsch, Raymond D; Walls, Susan; Barichivich, William J.; O'Donnell, Katherine
Semlitsch, R.D., Walls, S.C., Barichivich, W.J., and O'Donnell, K.M., 2016, Extinction debt as a driver of amphibian declines: an example with imperiled flatwoods salamanders: Journal of Herpetology, Online Ahead of Print, http://dx.doi.org/10.1670/16-090 or http://journalofherpetology.org/doi/abs/10.1670/16-090?journalCode=hpet.

Filter Total Items: 55
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...
A man in an orange shirt writes on a pad of paper
August 26, 2016
Jonathan Gillip, USGS hydrologist, documents a high-water mark he flagged near a damage retirement community in Denham Springs, Louisiana, August 26. So far, USGS teams have flagged and surveyed more than 400 high-watermarks across southern Louisiana.
Two men walk by debris along the side of the road
August 26, 2016
Daniel McCay and Chris Henry, U.S. Geological Survey hydrologic technicians, search a neighborhood south of Denham Springs, Louisiana, for high-water marks August 26. The term high-water mark refers to the debris flood waters will leave on walls, buildings and trees. This thin line of residue is an indicator of how high the waters reached, yet the fragile nature of these marks means they must be...
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 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.
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.
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...
Filter Total Items: 62
Image shows aerial imagery of flooding in Louisiana, courtesy of the National Geodetic Survey
August 22, 2016

The USGS response to the Louisiana floods is part of the larger USGS flood science mission...

Image shows a flooded street with a USGS truck nearby
August 19, 2016

All affected USGS scientists are alive and well, and our flood work continues...

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.