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Welcome to Region 4: The Mississippi Basin

USGS science throughout Mississippi, Louisiana, Arkansas, Missouri, and Iowa

Catching the Invasive Carp

USGS is working with partner agencies to develop and evaluate new methods for capturing bigheaded carps throughout the region

Louisiana's Coastal Wetlands in Peril

USGS analyzes land area change over time in one of the Nation's most critically threatened environments

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Region 4: Mississippi Basin

Welcome to the Mississippi Basin Region! Our streamgage network is used to monitor and assess water resources across the region. Other research focuses on fisheries and aquatic ecosystems, midcontinental plant/animal species, invasive species, wildlife disease, and energy and mining.

News

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President Proposes Nearly $1.8 Billion for USGS Science in FY 2024

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Bipartisan Infrastructure Law funds geochemistry surveying in central United States

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David Applegate Sworn In as Director of the U.S. Geological Survey

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Publications

Cross-sectional associations between drinking water arsenic and urinary inorganic arsenic in the US: NHANES 2003-2014

Background: Inorganic arsenic is a potent carcinogen and toxicant associated with numerous adverse health outcomes. The contribution of drinking water from private wells and regulated community water systems (CWSs) to total inorganic arsenic exposure is not clear. Objectives: To determine the association between drinking water arsenic estimates and urinary arsenic concentrations in the 2003-2014
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Water Resources Mission Area, New England Water Science Center

Preliminary machine learning models of manganese and 1,4-dioxane in groundwater on Long Island, New York

Manganese and 1,4-dioxane in groundwater underlying Long Island, New York, were modeled with machine learning methods to demonstrate the use of these methods for mapping contaminants in groundwater in the Long Island aquifer system. XGBoost, a gradient boosted, ensemble tree method, was applied to data from 910 wells for manganese and 553 wells for 1,4-dioxane. Explanatory variables included soil
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Water Resources Mission Area, New England Water Science Center

Geospatial standard operating procedures of the Chesapeake Bay Program

Introduction The Chesapeake Bay Program (CBP) has operated a geographic information system (GIS) program since the early 1990s to address the established and growing need for and use of geospatial data, maps, and analysis within the CBP Partnership. This report is intended to detail the standard operating procedures of the CBP GIS program and address the quality assurance, quality control, and oth
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Lower Mississippi-Gulf Water Science Center, Virginia and West Virginia Water Science Center
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Science

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4th instar monarch caterpillar

Department of Interior the Natural Resource Conservation Achievement Award for FY19-20 for efforts associated with the Monarch Conservation Science Partnership

Congratulations to the Monarch Conservation Science Partnership for receiving a 2020 Department of the Interior Natural Resource Conservation Achievement Award. The Team received this award in the Trailblazer category for efforts to address concerns related to the Monarch butterfly including conducting extinction risk research to establish the minimum overwintering population size required to...
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Upper Midwest Environmental Sciences Center
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Department of Interior the Natural Resource Conservation Achievement Award for FY19-20 for efforts associated with the Monarch Conservation Science Partnership

Congratulations to the Monarch Conservation Science Partnership for receiving a 2020 Department of the Interior Natural Resource Conservation Achievement Award. The Team received this award in the Trailblazer category for efforts to address concerns related to the Monarch butterfly including conducting extinction risk research to establish the minimum overwintering population size required to...
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Photo of biologist Randy Hines

USGS Safety and Occupational Health Award of Excellence Individual Awardee

Randy Hines with the Upper Midwest Environmental Sciences Center (UMESC) has assisted in developing an outstanding safety program. As the Center’s Collateral Duty Safety Program Coordinator (CDSPC), he coordinates the Center safety program, industrial hygiene monitoring, and employee safety training. Randy maintains the Center’s safety plans and ensures each employee has created a personal hazard...
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Upper Midwest Environmental Sciences Center
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USGS Safety and Occupational Health Award of Excellence Individual Awardee

Randy Hines with the Upper Midwest Environmental Sciences Center (UMESC) has assisted in developing an outstanding safety program. As the Center’s Collateral Duty Safety Program Coordinator (CDSPC), he coordinates the Center safety program, industrial hygiene monitoring, and employee safety training. Randy maintains the Center’s safety plans and ensures each employee has created a personal hazard...
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Image: Florida Everglades

Across Trophic Level System Simulation (ATLSS) Program for the Greater Everglades

Goals of the ATLSS Program are to help achieve a better understanding of components of the Everglades ecosystem, to provide an integrative tool for empirical studies, and to apply these tools to an adaptive management framework.
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Land Management Research Program, Wetland and Aquatic Research Center
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Across Trophic Level System Simulation (ATLSS) Program for the Greater Everglades

Goals of the ATLSS Program are to help achieve a better understanding of components of the Everglades ecosystem, to provide an integrative tool for empirical studies, and to apply these tools to an adaptive management framework.
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