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https://hdl.handle.net/11681/26566| Title: | The influence of geology on the morphologic response of the Lower Mississippi River |
| Authors: | Biedenharn, David S. Little, Charles D., 1946- Dunbar, Joseph B. Gaines, Roger A. |
| Keywords: | Alluvial streams Geology--Mississippi River Geomorphology River channels River engineering Water levels |
| Publisher: | United States. Army. Corps of Engineers. Mississippi Valley Division. United States. Mississippi River Commission. Coastal and Hydraulics Laboratory (U.S.) Geotechnical and Structures Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | MRG&P ; Report No. 17 |
| Abstract: | The Mississippi River is heavily influenced by structural and geologic controls involving regional uplifts, faults, clay plugs, outcrops of Tertiary clay, and Pleistocene gravel in its bed and tributaries. Degradation is continuing to migrate upstream on the Lower Mississippi River (LMR) and has presently moved as far upstream as the Hickman, KY, area. Left unchecked, this degradation could continue to advance on the LMR and ultimately migrate upstream into the Ohio and Middle Mississippi River systems. This degradation would not only adversely affect the stability and environmental features in the main stem of the river but also introduce headcutting into the many tributaries that enter the river in this degradational zone. Detailed studies of the exact role of these features, particularly with respect to retarding or halting long-term degradational processes along the river, have not received much attention. In this study, potential areas where geologic outcrops may influence river morphology are identified, and examples are provided that support the concept that geologic outcrops may be extremely important features that serve as temporary or permanent grade control along the river. |
| Description: | MRG&P Report |
| Gov't Doc #: | MRG&P Report No. 17 |
| Rights: | Approved for Public Release; Distribution is Unlimited |
| URI: | http://hdl.handle.net/11681/26566 http://dx.doi.org/10.21079/11681/26566 |
| Appears in Collections: | MRG&P Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MRG&P Report No 17.pdf | 15.79 MB | Adobe PDF |  View/Open |