| Summary: | Source: https://erdc-library.erdc.dren.mil/jspui/ A 1: 100-scale (undistorted) three-dimensional coastal hydraulic model was used to investigate the design of proposed harbor improvements at St. Paul Harbor, St. Paul Island, Alaska, with respect to wave and current conditions in the harbor and sediment patterns at the site. Wave-induced circulation and sediment patterns seaward of the main breakwater as a result of a submerged reef also were investigated. The model reproduced approximately 2,865 m (9,400 ft) of the St. Paul Island shoreline, the existing harbor, the surface area of Salt Lagoon with its connecting channels to the harbor, and sufficient offshore area in the Bering Sea to permit generation of the required test waves. Proposed improvements consisted of deepening the entrance channel, constructing a maneuvering area and installing a wave dissipating spending beach inside the existing harbor, and constructing a submerged reef seaward of the main breakwater. An 18.3-m-long (60-ft-long) unidirectional, spectral wave generator, an automated data acquisition and control system, and a crushed coal tracer material were used in model operation. United States. Army. Corps of Engineers. Alaska District.
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