Unified Interior Regions

Region 4: Mississippi Basin

Regions L2 Landing Page Tabs

Filter Total Items: 238
Date published: July 21, 2016
Status: Active

North American Waterfowl Management Plan

The ultimate success of North American Waterfowl Management Plan (NAWMP) depends on maintaining relevance to stakeholders and society. In order to be relevant, a first step is to better understand what people value in regard to waterfowl and their habitats. 

Date published: July 19, 2016
Status: Completed

Quantitative and Statistical Research Collaboration

Mathematical and statistical models are powerful research tools that play several important roles in conceptualizing and understanding the structure and dynamics of complicated ecological systems, including developing mechanistic hypotheses pertaining to ecological systems, designing studies that elucidate ecosystem structure and function, and extracting information from data.

Date published: June 22, 2016

Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) Outreach Program

The Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) is federal legislation enacted in 1990 designed to identify, prepare, and fund construction of coastal wetlands restoration projects.

Contacts: Kathryn Spear
Date published: June 22, 2016

Status and Trends of Emergent Wetlands in the Northern Gulf of Mexico: 1950-2010

Throughout the past century, emergent wetlands have been declining across the Gulf of Mexico. Emergent wetland ecosystems provide a plethora of resources including plant and wildlife habitat, commercial and recreational economic activity, water quality, and natural barriers against storms.

Contacts: Kathryn Spear
Date published: June 2, 2016
Status: Active

A Climate Change Adaptation Plan in Response to Sea Level Rise for the Chitimacha Tribe of Louisiana

This project will create a Climate Change Adaptation Plan for the Chitimacha Tribe of Louisiana (Chitimacha), serving as an implementable plan for coastal community adaptation to climate change that can be used as a model in other small communities.

Contacts: Kathryn Spear
Date published: May 26, 2016

Mapping Marsh Structure with Polarimetric Radar: Highlighting Change in Oil Spill Impacted Marshes

While the historic focus of vegetation condition is the bulk live and dead compositions, these variables provide no information on the structure of vegetation (density and orientation). Canopy structure information is critical for monitoring status and trends, and essential in climate, weather, and ecological studies.

Date published: May 11, 2016
Status: Active

Rate and Process of Mangrove Forest Expansion on Carbon Relations in Coastal Louisiana

Field observations over recent decades have confirmed mangrove expansion landward in tropical zones and poleward in temperate saltmarsh settings around the northern Gulf of Mexico.

Date published: May 9, 2016
Status: Active

Supporting River and Delta Science through Data Management and Visualization

Mississippi River Hydrodynamic and Delta Management Study (MRHDMS)is the first large-scale, long-term restoration assessment initiated under the Louisiana Coastal Area (LCA) Program.

Date published: May 6, 2016

Two Hundred Years of Forest Change in the Tensas River Basin

Prescriptions in the forest habitat management plan for Tensas River National Wildlife Refuge are designed to produce a forest once represented in the Tensas Basin. There are several problems with reconstructing original forests. In most areas, conditions have changed since these forests were cut; particularly, hydrology, soils, and climatic conditions.

Date published: May 4, 2016
Status: Completed

GIS Support and Spatial Analysis Support for the Louisiana Division of Administration, State Land Office

The Wetland and Aquatic Research Center (WARC) first implemented geographic information systems (GIS) in 1980 to assist in monitoring the nature and extent of wetland habitat changes. The geospatial capabilities at the Coastal Restoration Assessment Branch (CRAB), in part, grew out of that initial effort and now use GIS, remote sensing, and other computer based technologies to address a wide...

Date published: May 3, 2016
Status: Active

Structured Decision-Making to Facilitate Multi-Stakeholder Coastal Conservation and Restoration under Climate Change Uncertainties: Case Study on Barrier Island of the Northern Gulf of Mexico

Barrier island resource managers within the northern Gulf of Mexico have the opportunity to more directly incorporate scientific uncertainties and technological challenges inherent with large-scale barrier island restoration projects, and as such, commit to developing robust long-term monitoring programs and applying adaptive management.

Date published: April 25, 2016
Status: Active

Investigation of Causal Mechanisms of Coastal Wetland Change in Coastal Louisiana

This task will involve the compilation of all data sources and expert knowledge of causal mechanisms of specific areas of wetland loss throughout the coastal zone of Louisiana.

Filter Total Items: 4,537
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Year Published: 2020

Modeling soil porewater salinity in mangrove forests (Everglades, Florida, USA) impacted by hydrological restoration and a warming climate

Hydrology is a critical driver controlling mangrove wetlands structural and functional attributes at different spatial and temporal scales. Yet, human activities have negatively affected hydrology, causing mangrove diebacks and coverage loss worldwide. In fact, the assessment of mangrove water budgets, impacted by natural and human disturbances,...

Zhao, Xiaochen; Rivera-Monroy, Victor H.; Wang, Hongqing; Xue, Zuo; Tsai, Cheng-Feng; Willson, C. S.; Castañeda-Moya, E.; Twilley, Robert R.

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Year Published: 2020

Total water level data from the January and March 2018 nor’easters for coastal areas of New England

During winter 2017–18 coastal areas of New England were impacted by the January 4, and March 2–4, 2018, nor’easters. The U.S. Geological Survey (USGS), under an interagency agreement with the Federal Emergency Management Agency (FEMA), collected total water level data (the combination of tide, storm surge, wave runup and setup, and freshwater...

Bent, Gardner C.; Taylor, Nicholas J.
Bent, G.C., and Taylor, N.J., 2020, Total water level data from the January and March 2018 nor’easters for coastal areas of New England: U.S. Geological Survey Scientific Investigations Report 2020–5048, 47 p., https://doi.org/10.3133/sir20205048.

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Year Published: 2020

Occurrence and spatiotemporal dynamics of pharmaceuticals in a temperate-region wastewater effluent-dominated stream: Variable inputs and differential attenuation yield evolving complex exposure mixtures

Effluent-dominated streams are becoming increasingly common in temperate regions and generate complex pharmaceutical mixture exposure conditions that may impact aquatic organisms via drug–drug interactions. Here, we quantified spatiotemporal pharmaceutical exposure concentrations and composition mixture dynamics during baseflow conditions at four...

Zhi, Hui; Kolpin, Dana W.; Klaper, R.D.; Iwanowicz, Luke R.; Meppelink, Shannon M.; LeFevre, Gregory H.

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Year Published: 2020

Methods for estimating selected low-flow frequency statistics and mean annual flow for ungaged locations on streams in Alabama

Streamflow data and statistics are vitally important for proper protection and management of the water quality and water quantity of Alabama streams. Such data and statistics are generally available at U.S. Geological Survey streamflow-gaging stations, also referred to as streamgages or stations, but are often needed at ungaged stream locations....

Feaster, Toby D.; Kolb, Katharine R.; Painter, Jaime A.; Clark, Jimmy M.
Feaster, T.D., Kolb, K.R., Painter, J.A., and Clark, J.M., 2020, Methods for estimating selected low-flow frequency statistics and mean annual flow for ungaged locations on streams in Alabama (ver. 1.1, November 20, 2020): U.S. Geological Survey Scientific Investigations Report 2020–5099, 21 p., https://doi.org/10.3133/sir20205099.

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Year Published: 2020

Stressor identification framework of biological impairment in Mississippi streams to support watershed restoration and TMDL development

The Clean Water Act (CWA) requires States to identify waters that are impaired for designated uses. These waters are published through a State’s §303(d) list. The CWA also requires that a total maximum daily load (TMDL) be completed for each water body to calculate the maximum amount of contaminants that can be present in that water body and still...

Hicks, Matthew B.; Cartwright, Jennifer M.
Hicks, M.B., and Cartwright, J.M., 2020, Stressor identification framework of biological impairment in Mississippi streams to support watershed restoration and TMDL development: U.S. Geological Survey Scientific Investigations Report 2020–5098, 42 p., https://doi.org/10.3133/sir20205098.

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Year Published: 2020

Unfamiliar territory: Emerging themes for ecological drought research and management

Novel forms of drought are emerging globally, due to climate change, shifting teleconnection patterns, expanding human water use, and a history of human influence on the environment that increases the probability of transformational ecological impacts. These costly ecological impacts cascade to human communities, and understanding this changing...

Crausbay, Shelley D.; Betancourt, Julio L.; Bradford, John; Cartwright, Jennifer M.; Dennison, William C.; Dunham, Jason B.; Enquist, Carolyn Armstrong; Frazier, Abby G. ; Hall, Kimberly R.; Littell, Jeremy S.; Luce, Charlie H.; Palmer, Richard; Ramirez, Aaron R.; Rangwala, Imtiaz; Thompson, Laura; Walsh, Brianne M.; Carter, Shawn

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Year Published: 2020

Bisphenol A and 17α-ethinylestradiol-induced transgenerational gene expression differences in the brain–pituitary–testis axis of medaka, Oryzias latipes

Endocrine disrupting chemicals (EDCs), such as bisphenol A (BPA) and 17α-ethinylestradiol (EE2), can have far reaching health effects, including transgenerational abnormalities in offspring that never directly contacted either chemical. We previously reported reduced fertilization rates and embryo survival at F2 and F3 generations caused by 7-day...

Thayil, Albert J.; Wang, Xuegeng; Bhandari, Pooja; vom Saal, Frederick S.; Tillitt, Donald E.; Bhandari, Ramji K.

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Year Published: 2020

Using boosted regression tree models to predict salinity in Mississippi embayment aquifers, central United States

High salinity limits groundwater use in parts of the Mississippi embayment. Machine learning was used to create spatially continuous and three‐dimensional predictions of salinity across drinking‐water aquifers in the embayment. Boosted regression tree (BRT) models, a type of machine learning, were used to predict specific conductance (SC) and...

Knierim, Katherine J.; Kingsbury, James A.; Haugh, Connor J.; Ransom, Katherine Marie

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Year Published: 2020

Effects of water level alteration on carbon cycling in peatlands

Globally, peatlands play an important role in the carbon (C) cycle. High water level is a key factor in maintaining C storage in peatlands, but water levels are vulnerable to climate change and anthropogenic disturbance. This review examines literature related to the effects of water level alteration on C cycling in peatlands to summarize new...

Zhong, Yehui; Ming, Jiang; Middleton, Beth

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Year Published: 2020

Endocrine disrupting activities and geochemistry of water resources associated with unconventional oil and gas activity

The rise of hydraulic fracturing and unconventional oil and gas (UOG) exploration in the United States has increased public concerns for water contamination induced from hydraulic fracturing fluids and associated wastewater spills. Herein, we collected surface and groundwater samples across Garfield County, Colorado, a drilling-dense region, and...

Kassotis, Christopher D.; Harkness, Jennifer S.; Vo, Phuc H.; Vu, Danh C.; Hoffman, Kate; Cinnamon, Katelyn M.; Cornelius-Green, Jennifer N.; Vengosh, Avner; Lin, Chung-Ho; Tillitt, Donald E.; Kruse, Robin L.; McElroy, Jane A.; Nagel, Susan C.

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Year Published: 2020

A global biophysical typology of mangroves and its relevance for ecosystem structure and deforestation

Mangrove forests provide many ecosystem services but are among the world’s most threatened ecosystems. Mangroves vary substantially according to their geomorphic and sedimentary setting; while several conceptual frameworks describe these settings, their spatial distribution has not been quantified. Here, we present a new global mangrove...

Thorley, Julia; Worthington, Thomas A.; zu Ermgassen, Philine S.E.; Friess, Daniel A.; Krauss, Ken; Lovelock, Catherine E.; Tingey, Rick; Woodroffe, Colin D.; Bunting, Pete; Cormier, N.; Lagomasino, David; Lucas, Richard; Murray, Nicholas J.; Sutherland, William J.; Spalding, Mark

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Year Published: 2020

Genetic diversity targets and indicators in the CBD post-2020 Global Biodiversity Framework must be improved

The 196 parties to the Convention on Biological Diversity (CBD) will soon agree to a post-2020 global framework for conserving the three elements of biodiversity (genetic, species, and ecosystem diversity) while ensuring sustainable development and benefit sharing. As the most significant global conservation policy mechanism, the new CBD framework...

Hoban, Sean M.; Bruford, Michael W.; D'Urban Jackson, Josephine; Lopes-Fernandes, Margarida; Heuertz, Myriam; Hohenlohe, Paul A.; Sjögren-Gulve, Per; Segelbacher, Gernot; Vernesi, Cristiano; Aitken, Sally; Bertola, Laura D.; Bloomer, Paulette; Breed, Martin; Rodríguez-Correa, Hernando; Funk, W. Chris; Grueber, Catherine E.; Hunter, Margaret; Jaffe, Rodolfo; Liggins, Libby; Mergeay, Joachim; Moharrek, Farideh; O'Brien, David; Ogden, Rob; Palma-Silva, Clarisse; Paz-Vinas, Ivan; Pierson, Jennifer; Ramakrishnan, Uma; Simo-Droissart, Murielle; Tani, Naoki; Waits, Lisette; Laikre, Linda

Filter Total Items: 220
Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

USGS scientists take water quality measurements on the Atchafalaya River Basin near Melville, La.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

USGS scientists Mike Descant and Cindy Sibley take water quality measurements on the Atchafalaya River Basin near Melville, La.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

The floodwaters rise on the Atchafalaya River Basin near Melville, La.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

A traveling USGS water quality lab.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

USGS scientists Paul Frederick and Mike Descant take streamflow measurements on the the Mississippi River in Baton Rouge, La.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

USGS scientist Paul Frederick manually checks the water levels near a streamgage on the Mississippi River in Baton Rouge, La.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

USGS scientist Paul Frederick checks a streamgage on the Mississippi River in Baton Rouge, La.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

A USGS streamgage can be seen on the side of the Mississippi River in Baton Rouge, La.

Image: USGS Measures Flooding in Louisiana
May 12, 2011

USGS Measures Flooding in Louisiana

Floodwaters rise in Baton Rouge, La.

USGS Louisiana Water Science Center (LA WSC) crew on a flooded road
May 8, 2011

USGS Louisiana Water Science Center (LA WSC) crew on a flooded road

USGS Louisiana Water Science Center (LA WSC) crew on a flooded road

Measuring discharge below the New Madrid Floodway breach
May 3, 2011

Measuring discharge below the New Madrid Floodway breach

Measuring discharge below the New Madrid Floodway breach

Flood of May 3, 2011, at USGS streamflow-gaging station 07069000, Black River at Pocahontas, Arkansas.
May 3, 2011

Flood of May 3, 2011, Black River at Pocahontas, Ark.

Flood of May 3, 2011, at USGS streamflow-gaging station 07069000, Black River at Pocahontas, Arkansas. Photograph by D.M. Wagner, Lower Mississippi-Gulf Water Science Center.

SIR 2016–5081

Filter Total Items: 253
USGS science for a changing world logo
June 10, 2011

The potential effects of Fayetteville Shale gas extraction on Brewer Lake and Cypress Creek, Ark. are being studied by the U.S. Geological Survey in partnership with Southwestern Energy and Conway Corporation. 

USGS science for a changing world logo
June 2, 2011

Coastal Louisiana has lost a wetland area the size of Delaware, equaling 1,883 square miles, over the past 78 years, according to a new U.S. Geological Survey National Wetlands Research Center study. 

USGS science for a changing world logo
May 27, 2011

A missing university official from Colombia was located using maps and geospatial data from the U.S. Geological Survey’s Science Response Vehicle (SRV) Team and the National Park Service (NPS).

USGS science for a changing world logo
May 27, 2011

Satellite images show large amounts of sediment throughout coastal Louisiana as a result of flooding on the Mississippi River, according to recent U.S. Geological Survey and NASA data. 

USGS and NASA are providing satellite imagery to the U.S. Army Corps of Engineers and the State of Louisiana to assist with the flood response efforts.      

USGS science for a changing world logo
May 27, 2011

Coastal Louisiana has lost a wetland area the size of Delaware, equaling 1,883 square miles, over the past 78 years, according to a new U.S. Geological Survey National Wetlands Research Center study.

USGS science for a changing world logo
May 19, 2011

The opening of the Morganza Spillway to alleviate flooding on the Mississippi River is diverting water into the Morganza floodway and downstream into the Atchafalaya River, potentially impacting as much as 800,000 acres of wetlands, navigational waterways, and recreational and fishery waters in Louisiana.

USGS science for a changing world logo
May 16, 2011

U.S. Geological Survey crews are measuring flooding along the Atchafalaya and Mississippi Rivers, including the Morganza and Bonnet Carre Spillways.

Several USGS streamgages located on the Mississippi and Atchafalaya Rivers are expected to reach the highest levels recorded since 1927.

USGS science for a changing world logo
May 13, 2011

Recent Landsat satellite data captured by the U.S. Geological Survey and NASA on May 10 show the major flooding of the Mississippi River around Memphis, Tenn. and along the state borders of Tennessee, Kentucky, Missouri, and Arkansas as seen from 438 miles above the Earth.

USGS science for a changing world logo
May 11, 2011

The USGS Mississippi Water Science Center is working to provide emergency information on the flow and water level of the Mississippi River and its tributaries at critical locations throughout the State of Mississippi.

USGS science for a changing world logo
May 6, 2011

USGS scientists are measuring the amount of water spilling into the New Madrid floodway as a result of the recent intentional breaching of the Birds Point Levee in Missouri. The measurements are critical for estimating how much water downstream levees will need to hold back and for predicting flood crest heights, as the remaining flood waters pass through the Mississippi River. 

USGS science for a changing world logo
May 6, 2011

The U.S. Geological Survey is monitoring extremely high floodwaters that caused the Arkansas State Highway and Transportation Department to close a stretch of Interstate 40 near Des Arc, Ark.

Interstate 40 is the primary route between Little Rock and Memphis and is one of the busiest truck routes in the nation.

USGS science for a changing world logo
May 2, 2011

U.S. Geological Survey field crews continue to measure historic flooding across most of Arkansas. 

River levels are still rising in parts of the state; many have increased by as much as 15 to 30 feet since heavy rainfall began on April 22. Near real-time river level and streamflow information from 149 USGS Arkansas streamgage locations is available online.