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Lower Mississippi-Gulf Water Science Center

Welcome to the USGS website that provides access to water resources information for the USGS Lower Mississippi-Gulf 5 State Water Science Center. Our center encompasses Alabama, Arkansas, Louisiana, Mississippi and Tennessee including all of the unique water resources contained within! If you are seeking Real-Time Water Data for the states we serve please click the button below. 

News

Watershed mapping project shows rapid loss of forests, offers new view of Va.’s changing landscapes

Watershed mapping project shows rapid loss of forests, offers new view of Va.’s changing landscapes

Chesapeake Bay Program releases most detailed data on the Chesapeake’s lands and waters to date

Chesapeake Bay Program releases most detailed data on the Chesapeake’s lands and waters to date

Unlocking Arkansas' Hidden Treasure: USGS Uses Machine Learning to Show Large Lithium Potential in the Smackover Formation

Unlocking Arkansas' Hidden Treasure: USGS Uses Machine Learning to Show Large Lithium Potential in the Smackover Formation

Publications

Trends and seasonal patterns of nitrogen and phosphorus concentrations and loads in two Mississippi Alluvial Plain watersheds following nutrient reduction efforts during 2010–22 Trends and seasonal patterns of nitrogen and phosphorus concentrations and loads in two Mississippi Alluvial Plain watersheds following nutrient reduction efforts during 2010–22

The Mississippi Alluvial Plain ecoregion in Mississippi was historically part of the largest continuous wetland in North America but was clearcut and converted to row crop agriculture beginning in the late 1800s. To reduce the effects of agriculture on surface waters in the Mississippi Alluvial Plain, nutrient reduction best management practices have been implemented throughout the...
Authors
Stephen E. DeVilbiss, Matthew B. Hicks, Emily Gain, Natalie Segrest

Magnitude and frequency of urban floods in Alabama and Mississippi using data through the 2024 water year Magnitude and frequency of urban floods in Alabama and Mississippi using data through the 2024 water year

To improve flood-frequency estimates for urban streams in Alabama and Mississippi, the U.S Geological Survey, in cooperation with the Alabama and Mississippi Departments of Transportation, estimated streamflows corresponding to selected annual exceedance probabilities (AEPs) for 64 streamgages on urban streams in the two States—48 in Alabama and 16 in Mississippi. Using estimates from 42...
Authors
Daniel M. Wagner, Brandon T. Anderson

A multidecadal metric of coastal wetland stability: Development of the Landsat-based UnVegetated-to-Vegetated Ratio (UVVR) version 2 spanning 1985-2022 A multidecadal metric of coastal wetland stability: Development of the Landsat-based UnVegetated-to-Vegetated Ratio (UVVR) version 2 spanning 1985-2022

The UnVegetated-to-Vegetated Ratio (UVVR) is a well-established metric of wetland condition, identifying stable wetlands with high vegetation cover and low vegetation cover wetlands prone to loss, informing research and management efforts in the coastal zone. In this study, we document the development and release of version 2 of UVVR (UVVRv2) for the coastal conterminous United States...
Authors
Brian T. Lamb, Brady Couvillion, Zafer Defne, Neil K. Ganju

Science

Mobile River Basin Study

The Mobile River Basin in Alabama, Georgia, Mississippi, and Tennessee is one of the 59 study units that are part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program. The long-term goals of this program are to describe the status and trends in the quality of a large, representative part of the Nation's surface- and ground-water resources, and to provide a sound...
Mobile River Basin Study

Mobile River Basin Study

The Mobile River Basin in Alabama, Georgia, Mississippi, and Tennessee is one of the 59 study units that are part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program. The long-term goals of this program are to describe the status and trends in the quality of a large, representative part of the Nation's surface- and ground-water resources, and to provide a sound...
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Where Land Meets Sea: USGS Science for Resilient Coastal Habitats

USGS coastal science plays a critical role in supporting the effective, science-based management of coastal ecosystems, where the biodiversity of land and sea meet. It provides managers with the information they need to make sound decisions. Through cutting-edge research, predictive modeling, and decision-support tools, USGS empowers resource managers to make informed, science-based choices. From...
Where Land Meets Sea: USGS Science for Resilient Coastal Habitats

Where Land Meets Sea: USGS Science for Resilient Coastal Habitats

USGS coastal science plays a critical role in supporting the effective, science-based management of coastal ecosystems, where the biodiversity of land and sea meet. It provides managers with the information they need to make sound decisions. Through cutting-edge research, predictive modeling, and decision-support tools, USGS empowers resource managers to make informed, science-based choices. From...
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Integrating Remote Sensing and Numerical Modeling Technology to Detect and Manage Current and Future Harmful Algal Blooms in Louisiana’s Coastal and Tidal Waters

USGS is collaborating with partners to assess past and current CyanoHABs for the development of a predictive model and forecasting system for Lake Pontchartrain estuary. This technology can be beneficial for informing future planning of water resource development projects, and the water management of the estuary.
Integrating Remote Sensing and Numerical Modeling Technology to Detect and Manage Current and Future Harmful Algal Blooms in Louisiana’s Coastal and Tidal Waters

Integrating Remote Sensing and Numerical Modeling Technology to Detect and Manage Current and Future Harmful Algal Blooms in Louisiana’s Coastal and Tidal Waters

USGS is collaborating with partners to assess past and current CyanoHABs for the development of a predictive model and forecasting system for Lake Pontchartrain estuary. This technology can be beneficial for informing future planning of water resource development projects, and the water management of the estuary.
Learn More
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