Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/13711
Title: Columbia River estuary hybrid model studies. Report 4, Entrance channel tests
Authors: United States. Army. Corps of Engineers. Portland District
McAnally, William H., Jr.
Brogdon, Noble J., Jr.
Stewart, J. Phillip
Keywords: Columbia River estuary
Estuaries
Dredging
Navigation channels
Hydraulic models
Shoaling
Sediment transport
Sedimentation
Deposition
Salinity
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; HL-83-16 rept. 4.
Description: Technical Report
Abstract: A hybrid modeling approach using a fixed-bed physical model, numerical models, and analytical techniques was used to study navigation channel shoaling at the mouth of the Columbia River. Sixteen plans for reducing channel maintenance dredging at the existing 48-ft depth and at 55- and 60-ft depths were tested. Effects of the plans on tides and currents were found to be subtle. Nondeepening plans had minor effects on salinity intrusion while channel deepening increased salinities by 1 to 6 ppt up to about mile 18. Only one structural plan reduced shoaling below base conditions for the 48-ft channel. Channel deepening increased shoaling considerably. NOTE: This file is large. Allow your browser several minutes to download the file.
Rights: Approved for public release; distribution is unlimited.
URI: http://hdl.handle.net/11681/13711
Appears in Collections:Technical Report

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