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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: 234
National Water-Quality Assessment Program Map 1991-2001
Date Published: June 23, 2017

National Water Quality Assessment (NAWQA) Program - Mississippi Embayment Study Area

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
Date Published: June 23, 2017

Water Use - Mississippi

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
Date Published: June 23, 2017

Harrison County Mississippi Ground-Water Monitoring

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
Date Published: June 23, 2017

City of Jackson, Mississippi Ground-Water Monitoring

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
Date Published: June 23, 2017
Status: Completed

LAWSC provides easy flood tracking on the web – 25 May 2007

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
Date Published: June 23, 2017

Watershed Boundary Dataset for Mississippi - Hydrologic Unit Codes (HUC)

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
Date Published: June 23, 2017

Hattiesburg Flood Inundation

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...

Contacts: John B Storm
Hardened Gages—Built to Survive
Date Published: June 23, 2017
Status: Completed

Hardened Gages—Built to Survive

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
Date Published: June 23, 2017
Status: Active

USGS Hurricane-related Publications for Louisiana

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 Atlantic Infrared...

WERC marsh during a storm
Date Published: June 23, 2017
Status: Active

USGS Louisiana Coastal Sites

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
Date Published: June 23, 2017

Forecast Information and Imagery

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
Date Published: April 12, 2017
Status: Active

Stream quality assessments in the Southeast

The South Atlantic Water Science Center is a participant in the Southeast Stream Quality Assessment (SESQA) which covers the southeastern region of the Regional Stream Quality Assessment (RSQA).

The goal of the study is to determine how stream...

Filter Total Items: 3,026
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Year Published: 2018

Thiamine deficiency in fishes: Causes, consequences, and potential solutions

Thiamine deficiency complex (TDC) is a disorder resulting from the inability to acquire or retain thiamine (vitamin B1) and has been documented in organisms in aquatic ecosystems ranging from the Baltic Sea to the Laurentian Great Lakes. The biological mechanisms leading to TDC emergence may vary among systems, but in fishes, one common outcome is...

Christie, Mark R.; Harder, Avril M.; Ardren, William R.; Evans, Allison N.; Futia, Matthew H.; Kraft, Clifford E.; Marsden, J. Ellen; Richter, Catherine A.; Rinchard, Jacques; Tillitt, Donald E.; Christie, Mark R.
Harder, A.M., Ardren, W.R., Evans, A.N., Futia, M.H., Kraft, C.E., Marsden, J.E., Richter, C.A., Rinchard, J., Tillitt, D.E., and Christie, M.R., 2018, Thiamine deficiency in fishes: causes, consequences, and potential solutions: Reviews in Fish Biology and Fisheries

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Year Published: 2018

Embryonic effects of an environmentally relevant PCB mixture in the domestic chicken

Studies were conducted to develop methods to assess the effects of a complex mixture of polychlorinated biphenyls (PCBs) in the domestic chicken (Gallus domesticus). Treatments were administered by egg injection to compare embryonic effects of an environmentally relevant PCB congener mixture in the domestic chicken over a range of doses. Chicken...

Ottinger, Mary Ann; Lavoie, Emma T.; Bohannon, Mary E. B.; Marcel, Allegra M.; Tschiffely, Anna E.; Duffy, Kara B.; McKernan, Moira A.; Thompson, Nichola; Whitehouse, H. Kasen; Davani, Kimya; Strauss, Marci; Tillitt, Donald E.; Lipton, Joshua; Dean, Karen M.
Ottinger, M.A., Lavoie, E.T., Bohannon, M.E.B., Marcel, A.M., Tschiffely, A.E., Duffy, K.B., McKernan, M., Thompson, N., Whitehouse, H.K., Davani, K., Strauss, M., Tillitt, D.E., Lipton, J., and Dean, K.M., 2018, Embryonic effects of an environmentally relevant PCB mixture in the domestic chicken: Environmental Toxicology and Chemistry, v. 37, no. 10, p. 2513-2522

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Year Published: 2018

Chronic toxicity of 4-nonylphenol to two unionid mussels in water-only exposures

Limited studies indicate that mussels are generally insensitive to organic chemicals; however, these studies were conducted in acute or short-term exposures, and little is known about the chronic sensitivity of mussels to organic chemicals. We evaluated the chronic (28 days) toxicity of 4-nonylphenol (4-NP) to two commonly tested species of...

Ivey, Chris D.; Wang, Ning; Alvarez, David; Hammer, Edward J.; Bauer, Candice R.
Ivey, C.D., Wang, N., Alvarez, D.A., Hammer, E.J., and Bauer, C.R., 2018, Chronic Toxicity of 4-Nonylphenol to Two Unionid Mussels in Water-Only Exposures: Bulletin of Environmental Contamination and Toxicology, v. 101, no. 4, p. 423-427

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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

Annual and approximately quarterly series peak streamflow derived from interpretations of indirect measurements for a crest-stage gage network in Texas through water year 2015

In 2006, the U.S. Geological Survey (USGS), incooperation with the Texas Department of Transportation,began collecting annual and approximately quarterly seriespeak-streamflow data at streamflow-gaging stations in smalltomedium-sized watersheds in central and western Texasas part of a crest-stage gage (CSG) network, along withselected flood-...

Asquith, William H.; Harwell, Glenn R.; Winters, Karl E.
Asquith, W.H., Harwell, G.R., and Winters, K.E., 2018, Annual and approximately quarterly series peak streamflow derived from interpretations of indirect measurements for a crest-stage gage network in Texas through water year 2015: U.S. Geological Survey Scientific Investigations Report 2018–5107, 24 p., https://doi.org/10.3133/sir20185107.

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Year Published: 2018

New insights into surface-water/groundwater exchanges in the Guadalupe River, Texas, from floating geophysical methods

In south-central Texas, the amount of streamflow in the Guadalupe River is a primary concern for local and downstream communities because of municipal, agricultural, wildlife, and recreational uses. Understanding the flow paths and rates of exchange between the surface water in the river and the groundwater in the underlying Carrizo-Wilcox aquifer...

Ikard, Scott J.; Banta, J. Ryan; Stanton, Gregory P.
Ikard, S.J., Banta, J.R., and Stanton, G.P., 2018, New insights into surface-water/groundwater exchanges in the Guadalupe River, Texas, from floating geophysical methods: U.S. Geological Survey Fact Sheet 2018–3057, 4 p., https://doi.org/10.3133/fs20183057.

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Year Published: 2018

Evaluation of chronic toxicity of sodium chloride or potassium chloride to a unionid mussel (Lampsilis siliquoidea) in water exposures using standard and refined toxicity testing methods

Freshwater mussels are generally underrepresented in toxicity databases used to derive water quality criteria, especially for long‐term exposures. Multiple tests were conducted to determine the chronic toxicity of sodium chloride (NaCl) or potassium chloride (KCl) to a unionid mussel (fatmucket, Lampsilis siliquoidea). Initially, a 4‐wk NaCl test...

Wang, Ning; Kunz, James L.; Dorman, Rebecca A.; Ingersoll, Christopher G.; Steevens, Jeffery; Hammer, Edward J.; Bauer, Candice R.

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Year Published: 2018

Status of groundwater-level altitudes and long-term groundwater-level changes in the Chicot, Evangeline, and Jasper aquifers, Houston-Galveston region, Texas, 2018

Since the early 1900s, most of the groundwater withdrawals in the Houston-Galveston region, Texas, have been from the three primary aquifers that compose the Gulf Coast aquifer system—the Chicot, Evangeline, and Jasper aquifers. Withdrawals from these aquifers are used for municipal supply, industrial, and irrigation purposes. This report,...

Shah, Sachin D.; Ramage, Jason K.; Braun, Christopher L.
Shah, S.D., Ramage, J.K., and Braun, C.L., 2018, Status of groundwater-level altitudes and long-term groundwater-level changes in the Chicot, Evangeline, and Jasper aquifers, Houston-Galveston region, Texas, 2018: U.S. Geological Survey Scientific Investigations Report 2018–5101, 18 p., https://doi.org/10.3133/sir20185101.

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Year Published: 2018

Assessment of water resources in areas that affect the habitat of the endangered Hine’s emerald dragonfly in the Lower Des Plaines River Valley, Illinois

Review of previous investigations indicates that potential decreases in groundwater recharge and increased groundwater extraction in the vicinity of the Lower Des Plaines River Valley in Will County, Illinois, may reduce the amount of groundwater flow in the Silurian aquifer in this area. Groundwater discharge from the Silurian aquifer to wetlands...

Kay, Robert T.; Gahala, Amy M.; Bailey, Clinton
Kay, R.T., Gahala, A.M., and Bailey, C., 2018, Assessment of water resources in areas that affect the habitat of the endangered Hine’s emerald dragonfly in the Lower Des Plaines River Valley, Illinois: U.S. Geological Survey Scientific Investigations Report 2018–5074, 104 p., https://doi.org/10.3133/sir20185074.

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Year Published: 2018

Understanding the effect of salinity tolerance on cyanobacteria associated with a harmful algal bloom in Lake Okeechobee, Florida

In an effort to simulate the survival of cyanobacteria asthey are transported from Lake Okeechobee to the estuarinehabitats that receive waters from the lake, a bioassayencompassing a range of salinities was performed. An overalldecline in cyanobacteria health in salinity treatments greaterthan 18 practical salinity units (psu) was indicated by...

Rosen, Barry H.; Loftin, Keith A.; Graham, Jennifer L.; Stahlhut, Katherine N.; Riley, James M.; Johnston, Brett D.; Senegal, Sarena
Attribution: Southeast
Rosen, B.H., Loftin, K.A., Graham, J.L., Stahlhut, K.N., Riley, J.M., Johnston, B.D., and Senegal, S., 2018, Understanding the effect of salinity tolerance on cyanobacteria associated with a harmful algal bloom in Lake Okeechobee, Florida: U.S. Geological Survey Scientific Investigations Report 2018–5092, 32 p., https://doi.org/10.3133/sir20185092.

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Year Published: 2018

Refinement of a regression-based method for prediction of flow-duration curves of daily streamflow in the conterminous United States

Regional regression is a common tool used to estimate daily flow-duration curves (FDCs) at ungaged locations. In this report, several refinements to a particular implementation of the regional regression method for estimating FDCs are evaluated by consideration of different methodological options through a leave-one-out cross-validation procedure...

Over, Thomas M.; Farmer, William H.; Russell, Amy M.
Over, T.M., Farmer, W.H., and Russell, A.M., 2018, Refinement of a regression-based method for prediction of flow-duration curves of daily streamflow in the conterminous United States: U.S. Geological Survey Scientific Investigations Report 2018–5072, 34 p., https://doi.org/10.3133/sir20185072.

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Year Published: 2018

Characterization of peak streamflows and flood inundation of selected areas in southeastern Texas and southwestern Louisiana from the August and September 2017 flood resulting from Hurricane Harvey

Hurricane Harvey made landfall near Rockport, Texas, on August 25, 2017, as a Category 4 hurricane with wind gusts exceeding 150 miles per hour. As Harvey moved inland, the forward motion of the storm slowed down and produced tremendous rainfall amounts over southeastern Texas, with 8-day rainfall amounts exceeding 60 inches in some locations,...

Watson, Kara M.; Harwell, Glenn R.; Wallace, David S.; Welborn, Toby L.; Stengel, Victoria G.; McDowell, Jeremy S.
Watson, K.M., Harwell, G.R., Wallace, D.S., Welborn, T.L., Stengel, V.G., and McDowell, J.S., 2018, Characterization of peak streamflows and flood inundation of selected areas in southeastern Texas and southwestern Louisiana from the August and September 2017 flood resulting from Hurricane Harvey: U.S. Geological Survey Scientific Investigations Report 2018–5070, 44 p., https://doi.org/10.3133/sir20185070.

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Technicians install a rapid deployment gage on a bridge base.
October 31, 2016

Installing a rapid deployment gauge to track Hurricane Matthew impacts

USGS hydrologic technician Jym Chapman (above) installs a rapid deployment gauge to measure water-surface elevation and other data in Myrtle Beach, South Carolina, prior to Hurricane Matthew’s approach in October 2016. Hydrologist Tim Pojunas (below) measures an elevation reference point used to calibrate the newly installed RDG. The data collected by RDGs are transmitted

...
October 7, 2016

USGS Live Video on Hurricane Matthew

This was a Facebook Live Video conducted with USGS Hydrologist, Brian McCallum from the South Atlantic Water Science Center in Norcross, GA. The original URL for this Facebook Live video is at: https://www.facebook.com/USGeologicalSurvey/videos/1179388798773768/

Beached boats and bare trees in Hurricane Hole
September 30, 2016

Irma leaves beached boats and broken trees in Huricane Hole

Boat owners sought protection for their vessels in sheltered Hurricane Hole, but Hurricane Irma sunk and beached many boats, likely damaging corals. Photo: Caroline Rogers, USGS, 2017

August 27, 2016

Live Chat with James Fountain on Louisiana Floods

This was a Facebook Live video conducted with James Fountain of the USGS discussing the Louisiana flooding in August 2016 and the personal experience James had with this event. Questions and comments during the live video at: https://www.facebook.com/USGeologicalSurvey/videos/1144228595623122/

Two men mark a high-water mark on a structure
August 26, 2016

USGS Scientists Mark a High-Water Mark in Louisiana

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

...
Two men walk by debris along the side of the road
August 26, 2016

Looking for High-Water Marks

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

...
A man in an orange shirt writes on a pad of paper
August 26, 2016

Recording a High-Water Mark

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 stand next to a building in yellow life jackets
August 26, 2016

Surveying a High-Water Mark

Chris Henry and Daniel McCay, USGS hydrologic technicians, use GPS equipment to survey a high-water mark outside of a flooded elementary school in Denham Springs, Louisiana, August 28. This school was located in one of the hardest hit flood areas and the blue line simulates how high the water was at its peak during this historic flood.

August 15, 2016

Flooding near Louisiana Water Science Center

The view on South Sherwood Forest Blvd near the USGS Louisiana Water Science Center office on August 15, 2016.

Image shows flooded roads with boats alongside the banks
August 15, 2016

Flooded Road in Louisiana

Flow along 4H Club Rd under I-12 on August 15, 2016.

Image shows a flooded street with green median
August 13, 2016

Flooded Street in Denham Springs

Backwater flooding across Florida Blvd near the Amite River Bridge in Denham Springs, LA.

Image shows a flooded house with trees in the background
August 13, 2016

Flooded House in Denham Springs

A flooded house near the confluence of the Comite and Amite Rivers near Denham Springs, LA.

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Image: Monarch Male Close-Up
April 27, 2017

As many as 1.8 billion additional stems of milkweed plants may be needed in North America to return imperiled monarch butterflies to a sustainable population size, according to a recently published U.S. Geological Survey study.

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.

Manatee
April 11, 2017

We appreciate your interest in USGS' Sirenia Project. To help inform members of the media and public, we have provided relevant publications, reports, and websites. 

This image shows a damaged street sign and flood debris left behind by record flood waters of the Blanco River near Martindale,
April 10, 2017

The new “Water On-the-Go” mobile app gives the public easy access to current conditions in streams across Texas. This product was developed by the U.S. Geological Survey to help raise water awareness during both floods and normal conditions.

Photo of USGS streamgage measures flooding in the lower Trinity River
February 22, 2017

A better understanding of sediment and freshwater flow into Galveston Bay is now available from a new U.S. Geological Survey report, done in cooperation with the Texas Water Development Board, and the Galveston Bay Estuary Program.

The Caernarvon Freshwater Diversion structure, located at the head of Breton Sound Estuary, became operational in 1992.
February 8, 2017

New research shows how river diversions may change water quality in estuaries. 

Wading birds feed near wooden posts marking a research site in a Louisiana salt marsh
January 25, 2017

Changes in rainfall and temperature are predicted to transform wetlands in the Gulf of Mexico and around the world within the century, a new study from the USGS and the University of Texas Rio Grande Valley concludes.

A SCUBA diver beside a Massive starlet coral on the sea floor at Dry Tortugas National Park
January 25, 2017

Boulder corals in the waters of Dry Tortugas National Park, 70 miles from Key West, contain evidence that confirms a centuries-old sea temperature cycle linked to rains, droughts and hurricanes.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
January 19, 2017

A regional assessment of untreated groundwater in the Coastal Lowlands aquifer system in the southeastern United States is now available from the U.S. Geological Survey.

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