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Title: Grays Harbor Estuary, Washington. Report 3, Westport small-boat basin study : hydraulic model investigation
Authors: United States. Army. Corps of Engineers. Seattle District.
Brogdon, Noble J.
Keywords: Estuaries
Grays Harbor Estuary
Hydraulic models
Small-boat basins
Small-boat harbor
Sediment transport
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; H-72-2 rept.3.
Description: Technical Report
Abstract: The existing, comprehensive fixed-bed model of the Grays Harbor estuary was used to determine current velocities, surface current patterns, flushing and dispersion characteristics, and qualitative shoaling rates and patterns for four small-boat basin plans located near Westport, Wash. Data collection consisted of current velocities for plans 1 and 2, surface current pattern photographs for plans 1, 1A, and 2; qualitative shoaling rates and patterns for plans 1, 1A, and 2A; flushing rates for plans 1, 1A, 2, and 2A; and dispersion from a proposed sewage outfall for the City of Westport for plan 1. Model test results indicate that only insignificant local changes in current velocities and surface current patterns outside the proposed basins would result from construction of any of the four small-boat basin plans. Shoaling for the plan 2 basin would be significantly less than for either plan 1 or 1A, but the shoaling rate for any of these plans would probably be moderate. The flushing rate for either plan 1 or 1A would be much better than for either plan 2 or 2A. The flushing rates for plans 2 and 2A could be improved, however, by the addition of a channel connecting the western end of the basin to either the existing Westhaven Cove or South Bay. Waste material discharged from the proposed Westport sewage outfall would enter the proposed basin during both ebb and flood currents, but maximum concentrations in the basin would only be on the order of 0.01 percent of the initial concentration at the outfall.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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