Lower Mississippi-Gulf Water Science Center

Data and Tools

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Real-time data:

Streamflow:   AL || AR || LA || MS || TN

Water quality:   AL || AR || LA || MS || TN

Groundwater levels:    AL || AR || LA || MS || TN

Precipitation:    AL || AR || LA || MS || TN

Water use:    AR || LA || MS || TN

Additional Information: USACE River Gages, NOAA Lower Mississippi River Forecast Center, NOAA South Atlantic Gulf River Forecast Center, NOAA Southeast River Forecast Center.

USGS StreamStats

USGS StreamStats

StreamStats users can select USGS data-collection station locations shown on a map and obtain previously published information for the stations.

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USGS WaterWatch

USGS WaterWatch

WaterWatch is a U.S. Geological Survey (USGS) World Wide Web site that displays maps, graphs, and tables describing real-time, recent, and past streamflow conditions for the United States.

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USGS NWISWeb

USGS NWISWeb

These pages provide access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands.

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Filter Total Items: 221
Date published: January 1, 2019

1) Streamflow-gaging stations

Seventeen streamflow-gaging stations, operated by the U.S. Geological Survey and distributed across the Ouachita Mountains of Arkansas and Oklahoma were selected for analysis. This child item includes a geographic information system point shapefiles of the study site locations. (OuachitaUsgsGages)

Date published: January 1, 2019

Groundwater altitude data, from monitoring-networks wells, considered for the potentiometric surface map, Mississippi River Valley alluvial aquifer, spring 2016

A potentiometric surface map for spring 2016 was created for the Mississippi River Valley alluvial (MRVA) aquifer, which was referenced to the North American Vertical Datum of 1988 (NAVD 88), using most of the available groundwater-altitude data from wells and surface-water-altitude data from streamgages. Most of the wells were measured annually or one time, after installation, bu

Date published: January 1, 2019

Digital elevation model, in meters, of the bathymetry of Dierks Lake, Arkansas

The dataset is a digital elevation model (DEM), in GeoTiff format, of the bathymetry of Dierks Lake, Howard and Sevier Counties, Arkansas. The extent of the DEM represents the area encompassing the extent of the aerial Light Detection And Ranging (LiDAR) data used in the project. Horizontal and vertical units are expressed in meters. The DEM was derived from an LAS dataset (a

Date published: January 1, 2019

Estimated baseflow and runoff using estimated and measured streamflow, five selected sites, Mississippi Delta

This data set provides estimated and measured streamflow data and hydrograph-separation results for five sites located in northwest Mississippi. Streamflow data were collected by the U.S. Geological Survey (USGS) and the U.S. Army Corps of Engineers. Hydrograph-separation results provide runoff and baseflow estimates at each site that were calculated using four methods: PART, HYSEP Fixed%

Date published: January 1, 2019

Point-source contributions of total nitrogen and total phosphorus from facilities

This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Ten

Date published: January 1, 2019

Summary of basin characteristics for National Hydrography Dataset, version 2 catchments in the southeastern United States, 1950 - 2010 at 12-digit hydrologic unit code (HUC12) pour points

This dataset provides numerical and categorical descriptions of 48 basin characteristics for 9,314 ungaged basins coinciding with 12-digit hydrologic unit code (HUC12) pour points that drain to the Gulf of Mexico. Characteristics are indexed by National Hydrography Dataset (NHD) version 2 COMID (integer that uniquely identifies each feature in the NHD) and HUC12 identifying number.

Date published: January 1, 2019

Estimated groundwater altitudes for wells screened in the MRVA aquifer, April 10th 1980 and April 10 2016, Mississippi Delta

This dataset includes grid node locations at which groundwater altitudes were estimated for April 10, 1980 and April 10, 2016 using the general additive model (GAM) and groundwater observations from the USGS NWIS web interface.

Date published: January 1, 2019

False River

Nutrient and phytoplankton data indicate poor environmental health in four oxbow lakes in central Louisiana suggesting that long-term agriculture practices and increases in shoreline development have accelerated eutrophication. Surface-water quality and phytoplankton indicators of eutrophication were examined at Lake Bruin, Lake St. John, Lake St. Joseph, and False River Lake along an eutro...

Date published: January 1, 2019

Digitized Contours from Georeferenced Plate 2001 from "Status of water levels and selected water-quality conditions in the Sparta-Memphis aquifer in Arkansas and the Sparta aquifer in Louisiana, spring-summer 2001" (Schrader, 2004)

During the spring of 2001, water levels were measured in 427 wells in the Sparta-Memphis aquifer in Arkansas and the Sparta aquifer in Louisiana. Water-quality samples were collected for temperature and specific-conductance measurements during the spring and summer of 2001 from 150 wells in Arkansas in the Sparta-Memphis aquifer. Dissolved chloride samples were collected and analyzed for 87 of...

Date published: January 1, 2019

Digitized Contours from Georeferenced Plate from "Analog simulation of water-level declines in the Sparta Sand, Mississippi Embayment" (Reed, 1972)

A digital dataset of analog simulation of water-level declines in the Sparta Sand, Mississippi Embayment in Missouri, Kentucky, Arkansas, Tennessee, Louisiana, and Mississippi was developed from J.E. Reed's "Analog simulation of water-level declines in the Sparta Sand, Mississippi Embayment" (1972). The plate was georeferenced to North American Datum 1983 and projected to

Date published: January 1, 2019

Natural and managed components of the water-budget from 2008–2012 for 43 HUC10s in the Apalachicola-Chattahoochee-Flint River Basin, Georgia, U.S.

A simple water budget includes precipitation, streamflow, change in storage, evapotranspiration, and residuals: P=Q + ET + ΔS + e. It is essential to include the managed component (i.e., the “human” component) to close the water budget and reduce the magnitude of the residuals from “natural” water budgets. Some of the largest components

Date published: January 1, 2019

Natural and managed components of the water-budget from 2008–2012 for 43 HUC10s in the Apalachicola-Chatahoochie-Flint River Basin, Georgia, U.S.

A simple water budget includes precipitation, streamflow, change in storage, evapotranspiration, and residuals: P=Q + ET + ΔS + e. It is essential to include the managed component (i.e., the “human” component) to close the water budget and reduce the magnitude of the residuals from “natural” water budgets. Some of the largest components of...