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ARS Home » Southeast Area » Oxford, Mississippi » National Sedimentation Laboratory » Watershed Physical Processes Research » Research » Research Project #438913

Research Project: Database of Lower Mississippi River Alluvial Plain Stream System Morphologic Attributes

Location: Watershed Physical Processes Research

Project Number: 6060-13000-026-53-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 1, 2020
End Date: Sep 30, 2022

Objective:
The overall objective is to develop a database of geometric and routing attributes for streams located in the Mississippi portion of the Lower Mississippi River Alluvial Plain, colloquially referred to as the Mississippi Delta. Specific objectives are: 1) Enhance pyRiverBed for use in the MS Delta; 2) Characterize channel bathymetry of meandering streams using pyRiverBed; 3) Compile generated stream system geometric attributes; and 4) Derive topology of the MS Delta stream system.

Approach:
Specific tasks are: 1) Further develop and test the Cooperator's model pyRiverBed on select reaches of meandering streams in the MS Delta using observed river bathymetry collected by ARS; 2) Develop technology to extract channel width, slope, and planform curvature from a combination of 2009 lidar of the Mississippi Delta and other remotely sensed data such as Landsat; 3) Develop spatial relationships of channel depth as a function of other stream system geometric attributes (e.g., width, slope, drainage area, etc.); 4) Generate meandering river bathymetry throughout the MS Delta for derived channel width, depth, slope, and curvature information using pyRiverBed; 5) Combine meandering stream geometric attributes with similar data of straight streams into a database; and 6) Develop the topology (incl. flow direction) of the Mississippi Delta stream system.