Alabama

Streamflow Alteration Assessments to Support Bay and Estuary Restoration in Gulf States

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Arkansas

Flow Conditions on the Buffalo National River

Buffalo River Float Conditions

Louisiana

Flood Inundation Mapping

Louisiana

Mississippi

Airborne Electromagnetic Surveys for Water Supply

Environmental Flow Research in the Tennessee River Basin

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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.

Real-Time Water Data - LMG

Hydrologic Data at LMG

Sediment Sampling - Mississippi River - Arkansas photograph

We provide current and historical surface-water, groundwater, water quality, water use, and ecological data in various formats (map, graphical, tabular)

Water Data at LMG

Science at LMG

The Lower Mississippi Water Science Center collects high-quality hydrologic data and conducts unbiased, scientifically sound research on Alabama, Arkansas, Louisiana, Mississippi, and Tennessee water resources.

Science at LMG

Quick links - Water Conditions for the nation

See current and historical water data for the United States. Here you can find information from floods to droughts for the entire nation.

NWISWeb

Publications

November 26, 2025

The acoustic-Doppler current profiler (ADCP): A comprehensive tool for river-reach hydromorphodynamics The acoustic-Doppler current profiler (ADCP): A comprehensive tool for river-reach hydromorphodynamics

This paper introduces the use of acoustic Doppler current profiler (ADCP) measurements as input for the Acoustic Mapping Velocimetry (AMV) method, a technique for characterizing the dynamics of riverine bedforms. The performance of this new approach, ADCP-AMV, is compared with input from a multibeam echosounder through a field study conducted on the Mississippi River (USA). A virtual...

Authors

Gábor Fleit, Marian Muste, Sándor Baranya, Dongsu Kim, Amanda Whaling, Tate McAlpin, Hojun You

Lower Mississippi-Gulf Water Science Center

September 29, 2025

Regional hydraulic geometry characteristics of stream channels in the Boston Mountains in Arkansas Regional hydraulic geometry characteristics of stream channels in the Boston Mountains in Arkansas

Many stream-channel infrastructure, habitat enhancement, and restoration projects are undertaken on streams throughout Arkansas by Federal, State, and local agencies as well as by private organizations and businesses with limited data on local geomorphology and streamflow conditions. Equations that relate drainage area above stable stream reaches to the basin characteristics, bankfull...

Authors

Daniel Kroes, Laura Suzanne Ruhl-Whittle, Allegra Pieri, Aaron Pugh

Lower Mississippi-Gulf Water Science Center

January 1, 2024

Watershed hydrology assessment for the Lower Colorado River Basin. Appendix D: RiverWare analyses Watershed hydrology assessment for the Lower Colorado River Basin. Appendix D: RiverWare analyses

RiverWare is a river system modeling tool developed by CADSWES (Center of Advanced Decision Support for Water and Environmental Systems) that allows the user to simulate complex reservoir operations and perform period-of-record analyses for different scenarios. For the InFRM hydrology studies, RiverWare is used to generate a homogeneous regulated POR by simulating the basin as if the...

Authors

David Wallace, Kara Watson

Lower Mississippi-Gulf Water Science Center, Oklahoma-Texas Water Science Center

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