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Title:	Effects of geologic outcrops on long-term geomorphic trends : New Madrid, MO, to Hickman, KY
Authors:	Dahl, Travis A. Giles, Justin S. Staebell, Kathleen A. Biedenharn, David S. Dunbar, Joseph B.
Keywords:	Hickman (Ky.) Hydraulic models Mississippi River--Geomorphology New Madrid (Mo.) Outcrops (Geology) River channels
Publisher:	United States. Army. Corps of Engineers. Lower Mississippi Valley Division. United States. Mississippi River Commission. Coastal and Hydraulics Laboratory (U.S.) Engineer Research and Development Center (U.S.)
Series/Report no.:	MRG&P Report (Mississippi River Geomorphology and Potamology Program (U.S.)) ; no. MRG&P Report No. 38
Abstract:	The Mississippi River between New Madrid, MO, and Hickman, KY, is of particular interest because of divergent trends in water surface profiles at the upstream and downstream ends of the reach. This report documents the investigation of the bathymetry, geology, and hydraulics of this segment of the river. The report shows that the area near River Mile 901 above Head of Passes strongly affects the river stages at low flows. This part of the river can experience high shear stresses when flows fall below 200,000 cfs, as opposed to most other locations where shear stress increases with flow. One-dimensional hydraulic modeling was also used to demonstrate that an increase of depth at a single scour hole, such as the one downstream from Hickman near River Mile 925, is unlikely to cause reach-wide degradation.
Description:	MRG&P Report
Gov't Doc #:	MRG&P Report No. 38
Rights:	Approved for Public Release; Distribution is Unlimited
URI:	https://hdl.handle.net/11681/41086 http://dx.doi.org/10.21079/11681/41086
Size:	38 pages / 3.21 MB
Types of Materials:	PDF
Appears in Collections:	MRG&P Report