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Louisiana

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.

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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.

News

Date published: August 26, 2021

Media Alert: Flights Above the Mississippi Alluvial Plain and Adjacent Areas to Continue Aquifer Mapping

Editor:  In the public interest and in accordance with Federal Aviation Administration regulations, the U.S. Geological Survey is announcing this low-level airborne project. Your assistance informing the local communities is appreciated.   

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Date published: September 20, 2021
Status: Completed

Biological Objectives for the Gulf Coast: Biological Planning Units & Target Species Population Objectives

The USGS partnered with the U.S. Fish and Wildlife Service and its conservation partners to develop 16 Biological Planning Units (BPU) and six Aquatic Extensions and compile population objectives for 166 species that are representative...

Date published: September 20, 2021
Status: Completed

Strategic Habitat Conservation for Gulf Sturgeon

WARC researchers partnered with Gulf Sturgeon decision makers and biologists to develop a Bayesian network model that uses habitat characteristics to predict the quantity of juvenile winter foraging habitat under alternative river discharge and timing of juvenile arrival scenarios.

Date published: September 17, 2021
Status: Active

Strategic Habitat Conservation for Brown Pelican

WARC researchers partnered with managers and species experts to develop a Bayesian network model and a geospatial habitat characteristics dataset to predict the number of Brown Pelican breeding pairs on islands in the northern Gulf of Mexico.

Date published: September 17, 2021
Status: Active

Strategic Habitat Conservation for Black Skimmer and Gull-billed Tern

WARC researchers partnered with managers and species experts to develop a Bayesian network model and a geospatial habitat characteristics dataset to predict the number of breeding pairs of Black Skimmer and Gull-billed Tern along the northern Gulf of Mexico.

Date published: May 21, 2021
Status: Active

Understanding Impacts of Sea-Level Rise and Land Management on Critical Coastal Marsh Habitat

To ensure successful restoration of coastal wetlands, WARC researchers will measure carbon cycling processes that indicate ecosystem health and sustainability.

Date published: November 5, 2020
Status: Active

Understanding Avian Habitat Availability and Use After Barrier Island Restoration in Coastal Louisiana

Using ecological and geographical data, WARC researchers and their partners are analyzing avian and benthic sampling on Whiskey Island and Caminda Headland to compare pre- and post-restoration aspects of habitat occupancy, habitat availability, habitat use, and kernal density estimation.

Contacts: T.J. Zenzal, Ph.D., Nicholas M Enwright, Ph.D., Hardin Waddle, Ph.D., Paul L. Leberg, Ph.D., Delaina LaBlanc , Darin Lee
Date published: October 29, 2020
Status: Active

Enhancing Cross-Jurisdictional Adaptive Management in the Gulf of Mexico

Using an iterative qualitative coding process, WARC researchers are identifying objectives, stressors, and management priorities to support the implementation of adaptive management in restoration programs across the Gulf of Mexico.

Date published: September 18, 2020
Status: Active

Adapting to Climate Change: Trends and Severe Storm Responses by Migratory Landbirds and Their Habitats

USGS scientists will be analyzing weather surveillance radar observations of birds departing stopover habitats to measure responses to climate change.

Contacts: T.J. Zenzal, Ph.D., Dr. Jeff Buler, Randy Wilson
Date published: July 29, 2020
Status: Active

Using Occupancy Analysis to Understand Ecological and Environmental Stressors that Affect the Range and Abundance of Gulf Coast Waterdogs (Necturus beyeri) in Louisiana Bayous

Sampling for Gulf Coast waterdogs is providing essential information to better understand the factors that impact the species' occupancy across Louisiana.

Date published: July 24, 2020
Status: Completed

Prevalence Rates of Snake Fungal Disease and Its Population-level Impacts in a Snake Assemblage in Southwest Louisiana

WARC researchers used visual encounter surveys to determine prevalence rates of snake fungal disease in south-central Louisiana.

Date published: July 23, 2020
Status: Active

Acoustic Monitoring for Two Rare Frog Species in Northwest Louisiana

WARC researchers are using automated recording units to monitor southern crawfish frogs and Strecker's chorus frogs in Louisiana.

Date published: June 4, 2020
Status: Active

Interaction of Environmental Stressors and Batrachochytrium dendrobatidis (Bd) Pathogen Loads on Survival of Green Frogs (Lithobates clamitans)

The U.S. Geological Survey Amphibian Research Monitoring Initiative (ARMI) is using a combination of swabbing, non-lethal tissue sampling, soil and water sampling, and collection of a variety of other environmental variables to determine the relationships between the prevalence and pathogen load of Bd infection and environmental stressors on green treefrog survival.

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Date published: May 10, 2021

Combined results and derivative products of hydrogeologic structure and properties from airborne electromagnetic surveys in the Mississippi Alluvial Plain

Electrical resistivity results from two regional airborne electromagnetic (AEM) surveys (Minsley et al. 2021 and Burton et al. 2021) over the Mississippi Alluvial Plain (MAP) were combined by the U.S. Geological Survey to produce three-dimensional (3D) gridded models and derivative hydrogeologic products.

Date published: February 19, 2021

Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, November 2018 - February 2019

Airborne electromagnetic (AEM) and magnetic survey data were collected during February 2016 along 300 line kilometers in the western Yukon Flats near Stevens Village, Alaska. Data were acquired with the CGG RESOLVE frequency-domain helicopter-borne electromagnetic systems together with a Scintrex Cesium Vapour CS-3 magnetometer. The AEM average depth of investigation is about 100 m. The survey...

Date published: February 10, 2021

Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, November 2019 - March 2020

Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired November 2019 to March 2020 along 24,030 line-kilometers (line-km) over the Mississippi Alluvial Plain (MAP). Data were acquired by CGG Canada Services, Ltd. with three different airborne sensors: the CGG Canada Services, Ltd.

Date published: February 5, 2021

An Unvegetated to Vegetated Ratio (UVVR) for coastal wetlands of the Conterminous United States (2014-2018)

This USGS Data Release represents geospatial data sets which were created to produce an Unvegetated to Vegetated Ratio (UVVR) for coastal wetlands of the conterminous United States (2014-2018).

Date published: April 23, 2020

Domestic Wells in the United States

Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

Date published: October 16, 2019

Archive of Chirp Subbottom Profile Data Collected in 2018 from the Northern Chandeleur Islands, Louisiana

From August 16 to 21, 2018, the U.S. Geological Survey (USGS) conducted a geophysical survey to investigate the geologic controls on barrier island evolution and medium-term and interannual sediment transport along the sand berm constructed in 2011 (offshore, at the northern end of the Chandeleur Islands, Louisiana) as mitigation of the Deepwater Horizon oil spill. This investigat

Date published: September 6, 2019

USGS Gulf Coast Petroleum Systems and National and Global Oil and Gas Assessment Projects-Louisiana-Mississippi Salt Basins and Western Gulf Provinces, Upper Cretaceous Tuscaloosa Marine Shale Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas hydrate resources on the north slope of Alaska. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum...

Date published: July 1, 2019

Ground-based time-domain electromagnetic data and resistivity models for the Mississippi Alluvial Plain Project

The Mississippi Alluvial Plain (MAP) Project contains several geologic units which act as important aquifers. We collected several sets of time-domain electromagnetic (TEM) data consisting of two higher-density surveys and six regional-scale transects. The higher density surveys were collected to compare and contrast to other geophysical data not included in this data release, such as a

Date published: August 28, 2018

USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present

Interactively explore assessment summary information for continuous (unconventional) assessments conducted at the USGS from 2000-2018. The assessment results data used to generate this visualization can be downloaded here in Excel Format.  These data represent all assessment results...

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Black and grey map of the contiguous 48 states shaded by the number of people using domestic wells per square kilometer (2010)
April 23, 2020

Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

Louisiana
September 30, 2016

River and Coastal Forecast Information

Lower Mississippi River Forecast Center, Slidell, Louisiana—(NWS)

 

Hurricane Louisiana Coast
September 14, 2016

June 1 marks the beginning of hurricane season. Should storms arrive on the Louisiana coast, the people in coastal communities across the State, along with many Federal, State, and local agencies will need to know how the storms are affecting the coastal and low-lying areas.The USGS maintains an extensive network of coastal gages that provides critical time-sensitive water level.

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

The 3DEP products and services available through The National Map consist of 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.

small excerpt of Yosemite Valley topographic map in shades of green and brown
September 30, 2005

River and Coastal Forecast Information

Mississippi and Ohio River 7-Day Summary and Forecast

 

Sparta Aquifer Monitoring and Sampling Map - AR/LA
November 10, 2003

The Union County Water Conservation Board with funding from the U.S. Environmental Protection Agency began a study in 2003 with the U.S. Geological Survey, the Union County Conservation District, Burns & McDonnell to monitor the impact of water-level recovery and water-quality characteristics of the Sparta aquifer system in southern Arkansas and northern Louisiana.

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Year Published: 2021

Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters

Executive SummaryAlong the coast of the U.S. Gulf of Mexico, the eastern oyster (Crassostrea virginica) plays important ecological and economic roles. Commercial landings from this region account for more than 50 percent of all U.S. landings; these oyster reefs also provide varied ecosystem services, including nursery habitat for many fish and...

La Peyre, Megan K.; Marshall, Danielle A.; Sable, Shaye E.
La Peyre, M.K., Marshall, D.A., and Sable, S.E., 2021, Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters: U.S. Geological Survey Open-File Report 2021–1063, 40 p., https://doi.org/10.3133/ofr20211063.

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Year Published: 2020

The relation of geogenic contaminants to groundwater age, aquifer hydrologic position, water type, and redox conditions in Atlantic and Gulf Coastal Plain aquifers, eastern and south-central USA

Groundwater age distributions developed from carbon-14 (14C), tritium (3H), and helium-4 (4He) concentrations, along with aquifer hydrologic position, water type, and redox conditions, were compared to geogenic contaminants of concern (GCOC) from 252 public-supply wells in six Atlantic and Gulf Coastal Plain unconsolidated-sediment aquifers....

Degnan, James R.; Lindsey, Bruce D.; Levitt, Joseph Patrick; Szabo, Zoltan

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Year Published: 2019

Understanding tidal marsh trajectories: Evaluation of multiple indicators of marsh persistence

Robust assessments of ecosystem stability are critical for informing conservation and management decisions. Tidal marsh ecosystems provide vital services, yet are globally threatened by anthropogenic alterations to physical and biological processes. A variety of monitoring and modeling approaches have been undertaken to determine which tidal...

Wasson, Kerstin; Ganju, Neil Kamal; Defne, Zafer; Endris, Charlie; Elsey-Quirk, Tracy; Thorne, Karen M.; Freeman, Chase M.; Guntenspergen, Glenn R.; Nowacki, Daniel J. ; Raposa, Kenneth B.

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Year Published: 2018

2018 hurricane and wildfire supplemental funding: USGS recovery activities

The Additional Supplemental Appropriations for Disaster Relief Requirements Act, 2018 (P.L. 115-123), was signed by the President on February 9, 2018. This funding provided $42.2 million to the U.S. Geological Survey (USGS) for equipment repair and replacement, high-resolution elevation data collection in both hurricane- and wildfire-impacted...

Hinck, Jo Ellen; Stachyra, Joseph
Hinck, J.E., and Stachyra, J., 2018, 2018 hurricane and wildfire supplemental funding—USGS recovery activities: U.S. Geological Survey Fact Sheet 2018–3063, 4 p., https://doi.org/10.3133/fs20183063.

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Year Published: 2018

Using mercury injection pressure analyses to estimate sealing capacity of the Tuscaloosa marine shale in Mississippi, USA: Implications for carbon dioxide sequestration

This work used mercury injection capillary pressure (MICP) analyses of the Tuscaloosa Group in Mississippi, including the Tuscaloosa marine shale (TMS), to assess their efficacy and sealing capacity for geologic carbon dioxide (CO2) sequestration. Tuscaloosa Group porosity and permeability from MICP were evaluated to calculate CO2 column...

Lohr, Celeste D.; Hackley, Paul C.
Lohr, C.D. and Hackley, P.C., 2018, Using mercury injection pressure analyses to estimate sealing capacity of the Tuscaloosa marine shale in Mississippi, USA: Implications for carbon dioxide sequestration: International Journal of Greenhouse Gas Control, v. 78, p. 375-387, https://doi.org/10.1016/j.ijggc.2018.09.006.

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Year Published: 2018

Bat community response to silvicultural treatments in bottomland hardwood forests managed for wildlife in the Mississippi Alluvial Valley

Silvicultural treatments (e.g., selective timber harvests) that are prescribed to promote wildlife habitat are intended to alter the physical structure of forests to achieve conditions deemed beneficial for wildlife. Such treatments have been advocated for management of bottomland hardwood forests on public conservation lands in the Mississippi...

Ketzler, Loraine P.; Comer, Christopher E.; Twedt, Daniel J.
Ketzler, L. P., Comer, C. E., and Twedt, D. J., 2018, Bat community response to silvicultural treatments in bottomland hardwood forests managed for wildlife in the Mississippi Alluvial Valley: Forest Ecology and Management, v. 417, p. 40-48. https://doi.org/10.1016/j.foreco.2018.02.047

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Year Published: 2018

Novel dermatophilosis and concurrent amyloidosis in Sanderlings (Calidris alba) from Louisiana, USA

We observed Sanderlings (Calidris alba) with facial growths in coastal Louisiana, US during summer of 2016. Severe lesions were associated with lethargy and lack of a flight response. We determined that the skin growth etiology was a bacterium of the genus Dermatophilus, rarely reported infecting birds. Sanderlings also exhibited severe...

Shearn-Bochsler, Valerie I.; Schulz, Jessica L.; Dobbs, Robert C.; Lorch, Jeffrey M.; Waddle, J. Hardin; Grear, Daniel A.
Shearn-Bochsler, V., Schulz, J.L., Dobbs, R.C., Lorch, J.M., Waddle, J.H., and Grear, D.A., 2017, Novel dermatophilosis and concurrent amyloidosis in sanderlings (Calidris alba) from Louisiana, USA: Journal of Wildlife Diseases, Online Ahead of Print, https://doi.org/10.7589/2017-04-078.

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Year Published: 2017

Land area change in coastal Louisiana (1932 to 2016)

Coastal Louisiana wetlands are one of the most critically threatened environments in the United States. These wetlands are in peril because Louisiana currently experiences greater coastal wetland loss than all other States in the contiguous United States combined. The analyses of landscape change presented here have utilized historical surveys,...

Couvillion, Brady R.; Beck, Holly; Schoolmaster, Donald; Fischer, Michelle
Couvillion, B.R., Beck, Holly, Schoolmaster, Donald, and Fischer, Michelle, 2017, Land area change in coastal Louisiana 1932 to 2016: U.S. Geological Survey Scientific Investigations Map 3381, 16 p. pamphlet, https://doi.org/10.3133/sim3381.

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Year Published: 2017

Prevalence of Batrachochytrium dendrobatidis and B. salamandrivorans in the Gulf Coast Waterdog, Necturus beyeri, from Southeast Louisiana, USA

The globally widespread amphibian fungal pathogen Batrachochytrium dendrobatidis (Bd) has been linked to amphibian declines worldwide (Lips et al. 2006; Skerratt et al. 2007). In Louisiana, USA, Bd has been found in several amphibian species (Chatfield et al. 2012; Rothermel et al. 2008), but to our knowledge no population-level die-offs have been...

Glorioso, Brad M.; Waddle, J. Hardin; Richards-Zawacki, Corinne L.
Glorioso, B., Waddle, H., and Richards-Zawacki, C.L., 2017, Prevalence of Batrachochytrium dendrobatidis and B. salamandrivorans in the Gulf Coast Waterdog, Necturus beyeri, from Southeast Louisiana, USA: Herpetological Review, v. 48, no. 2, p. 360-363.

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Year Published: 2017

Nocturnal arboreality in snakes in the swamplands of the Atchafalaya Basin of south-central Louisiana and Big Thicket National Preserve of Southeast Texas

The southeastern United States is home to a diverse assemblage of snakes, but only one species, the Rough Greensnake (Opheodrys aestivus), is considered specialized for a predominantly arboreal lifestyle. Other species, such as Ratsnakes (genus Pantherophis) and Ribbonsnakes/Gartersnakes (genus Thamnophis), are widely known to climb into...

Glorioso, Brad M.; Waddle, J. Hardin
Glorioso, B.M., and Waddle, J.H., 2017, Nocturnal arboreality in snakes in the swamplands of the Atchafalaya Basin of south-central Louisiana and Big Thicket National Preserve of Southeast Texas: Journal of North American Herpetology, v. 2017, no. 1, p. 11-18, http://www.cnah.org/pdf/88616.pdf.

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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.

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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.

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April 26, 2021

EarthShots — Satellite Images of Environmental Change

The US Geological Survey's Earth Resources Observation and Science Center, or "EROS" archive’s data from the LandSat satellites which have been in operation from 1972 to the present day. EarthShots presents environmental changes using Landsat images. 
 

Outstanding in the Field - Episode 7 artwork
April 7, 2021

Outstanding in the Field Episode 7 - Science in the Swamp

In this episode of Outstanding in the Field, we take you to the swamps and coastal wetlands of Louisiana, the land of bayous and beignets and a state with one of the most dynamic coastlines in the United States. The wetlands that make up the Louisiana coast are vast and help protect important cultural and natural resources. Here we learn about how USGS plays a key role in

hurricanes and tropical storms in 9.15.2020 NOAA satellite image
September 15, 2020

USGS Scientists Work on Four Tropical Cyclones at Once

In this NOAA satellite image from Sept. 15, 2020, Hurricane Sally approaches the U.S. Gulf Coast, Hurricane Paulettte creates storm waves far out in the Atlantic, and Tropical Storms Teddy and Vicky lie near the coast of Africa. Two tropical depressions are also developing; one of them is not visible in this image.

A screenshot of the Coastal Change Hazards Portal for Hurricane Laura showing red lines on gulf coast where change is likely.
August 26, 2020

Coastal Change Hazards Portal for Hurricane Laura

This Coastal Change Storm Hazard Team forecast was made at 4 AM CDT August 26, 2020 and shows forecast beach erosion at the base of the dunes (the strip of colored bars closest to the coast), overwash (middle strip) and inundation (outer strip) from Hurricane Laura.  The model accounts for sandy beaches and barrier islands and does not include marshes, forested or sea

...
December 31, 2019

What makes a wetland a wetland? (AD - Part 1)

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. In this video, we learn about three characteristics you can use to identify a wetland near you. 

December 31, 2019

What makes a wetland a wetland? (Part 1)

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. In this video, we learn about three characteristics you can use to identify a wetland near you. 

December 31, 2019

Wonderful Watery Wetlands - Part 2 (AD)

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center (www.usgs.gov/warc) study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. In this video, we learn about the variety of ways water can be studied, and how

December 31, 2019

Wonderful Watery Wetlands - Part 2

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center (www.usgs.gov/warc) study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. In this video, we learn about the variety of ways water can be studied, and how

December 31, 2019

Digging into the soil of wetlands (AD)

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. In this video, we explore the world beneath our feet by taking a close look at the anaerobic soils

December 31, 2019

Digging into the soil of wetlands

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center (www.usgs.gov/warc) study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. In this video, we explore the world beneath our feet by taking a close look at

December 31, 2019

The Power of Wetland Plants

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. The plants found in wetlands are known as hydrophytic vegetation and they play a crucial role in

December 31, 2019

Why do wetlands matter?

Scientists at the U.S. Geological Survey Wetland and Aquatic Research Center (www.usgs.gov/warc) study important aspects of wetlands, such as the flow and quality of water, the chemistry of soil, and the plants and animals which call this ecosystem home. In this video, we learn about a handful of ways healthy wetland habitats benefit

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Rice fields on the Mississippi Alluvial Plain
August 26, 2021

Editor:  In the public interest and in accordance with Federal Aviation Administration regulations, the U.S. Geological Survey is announcing this low-level airborne project. Your assistance informing the local communities is appreciated.   

Prime Hook National Wildlife Refuge UVVR
May 26, 2021

Scientists developed high-resolution imagery of coastal wetlands to identify the most vulnerable marshes across the US  

Aerial view of a southeast Louisiana coastal marsh
May 24, 2021

Coastal ecosystems, like wetlands, may be smaller in size when compared to say, a forest, but they have the ability to sequester more carbon per unit area, making them an incredible climate change mitigation tool

CGG RESOLVE in flight
May 20, 2021

Editor:  In the public interest and in accordance with Federal Aviation Administration regulations, the USGS is announcing this low-level airborne project.  Your assistance informing the local communities is appreciated.  

hurricanes and tropical storms in 9.15.2020 NOAA satellite image
September 15, 2020

Laura and Sally affecting Gulf Coast, waves from Paulette and Teddy to strike Atlantic beaches

To learn more about USGS’s role in providing science to decision makers before, during and after Hurricane Sally, visit usgs.gov/sally.

A screenshot of the Coastal Change Hazards Portal for Hurricane Laura showing red lines on gulf coast where change is likely.
August 26, 2020

Some erosion likely for nearly one-half of sandy shorelines from East Texas to Alabama

Editor's Note: This updated story reflects today's coastal change forecast and includes a new map.

 

To learn more about USGS’s role in providing science to decision makers before, during and after Hurricane Laura, visit www.usgs.gov/laura

THUMBNAIL: Timelapse of Schools in LA
August 3, 2020

Summary statistics are now available for this challenge. Thanks again to everyone who contributed!

TNMCorps Mapping Challenge: Schools in LA
July 23, 2020

Calling all editors!  We need help from our Standard Editors to review the remaining unedited (red) schools in Louisiana!  Our Peer Reviewers and Advanced Editors can help, too, by reviewing edited (green) points!

Dragonfly larvae being held in an open hand
July 21, 2020

A team of federal, academic, and NGO researchers conducted a national-scale assessment of mercury bioaccumulation in aquatic ecosystems using dragonfly larvae as biosentinels.

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