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Title: Enlargement of Marcus Hook Anchorage, Delaware River : hydraulic model investigation
Authors: Dames & Moore
Athow, Robert F.
Keywords: Delaware River
Delaware Bay
Hydraulic models
Marcus Hook Anchorage
Tidal currents
Sediment transport
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; H-76-17.
Description: Miscellaneous Paper
Abstract: An existing comprehensive physical model that correctly reproduced tides, tidal currents, and density currents throughout the entire Delaware Bay and River was used to determine the effects of enlargement of the Marcus Hook Anchorage. The study included tests in the model of the plan configuration to define its effects on tidal heights, current velocities, salinities, surface current patterns, dye dispersion, and post-dredging shoal developments. Based on the results of the model tests, the following conclusions were reached : (A.) the plan would have no effect on tidal heights or tidal phasing; (B.) the effects of the plan on current velocities and patterns would be minimal; (C.) the plan would not significantly change the salinity regime when low-flow conditions allow salinity to intrude into the study area; (D.) the plan caused a trend for dye concentrations to increase within and in the immediate vicinity of the Marcus Hook Anchorage for dye released between the main navigation channel and the proposed enlargement (sta E2 release) (a trend also existed for the plan to cause a slight increase in dye concentrations within the Marcus Hook Anchorage and a decrease downstream for dye released at the mouth of Raccoon Creek) ; and (E.) the effects of the plan on shoaling rates would be to increase the efficiency of the Marcus Hook Anchorage as a sediment trap, due to the enlarged cross-sectional area. Although there would not be a significant change in the shoaling rate in the Federal navigation channel, there would be a redistribution of shoaling in the study reach.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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