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Abstract

This resource includes overbank water levels and temperatures at 3 floodplain sites along the Lower Mississippi River downstream of Natchez, Mississippi, between October 2017 and November 2020. Overbank conditions are captured for three major floods, including the longest duration flood (2019) in recorded history along the Mississippi River. These time-series data of overbank water levels and temperatures are derived from Onset Hobo U20 pressure and temperature sensors deployed at 3 sites in the Lower Mississippi River floodplain between October 2017 and November 2020. Additionally, in-situ water quality data and depth-integrated samples were collected from the overbank water column during major flood conditions at multiple floodplain sites in March 2019 and June 2019. Water-quality measurements and laboratory analyses of suspended sediment, carbon, and nutrients are also provided in this resource. This resource is associated with an article in Journal of Hydrology titled 'Inundation mechanisms and overbank water quality along the Lower Mississippi River during the major floods of 2018, 2019, and 2020' (Heitmuller et al., 2025).

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

North Latitude

31.5395°

East Longitude

-91.3909°

South Latitude

31.0325°

West Longitude

-91.6765°

Temporal

Start Date:	10/19/2017
End Date:	11/07/2020

Streets Terrain Satelite

Spatial Extent

Leaflet Map data © OpenStreetMap contributors

Content

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Related Geospatial Features

This HydroShare resource is linked to the following geospatial features

Lower Mississippi Region [hu02/08]

Funding Agencies

This resource was created using funding from the following sources:

Agency Name	Award Title	Award Number
The Nature Conservancy	Nutrient, carbon, and sediment dynamics in an embanked floodplain system along the Lower Mississippi River in Adams and Wilkinson Counties, Mississippi	MSG–1903
U.S. Army Engineer Research and Development Center	Sediment management for compound flood hazards in fluvial systems (Tasks 1–5)	W912HZ-21-C-006
Geological Society of America	Hydrologic dynamics and floodplain sedimentation along the Lower Mississippi River embanked corridor near Natchez, Mississippi, during water year 2018

Contributors

People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name	Organization	Address	Phone	Author Identifiers
Leiden University
Kent Ozment	U.S. Fish & Wildlife Service

How to Cite

Heitmuller, F., P. F. Hudson, J. Costello, K. Kuehn (2025). Lower Mississippi River - Overbank water column (2017-20), HydroShare, https://doi.org/10.4211/hs.321ed1fe68864f62b10c067ac11e84f5

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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Lower Mississippi River - Overbank water column (2017-20)