Wave Action and Breakwater Location, East Beaver Bay Harbor, Lake Superior, Minnesota: Model Investigation
Abstract
A hydraulic model study was performed of the proposed harbor at East Beaver Bay, Minnesota, to determine the adequacy of the initially proposed plans of harbor construction in protecting the docks from storm-wave action, and to devise a satisfactory plan if the initially proposed plans were found inadequate. It was especially desired that the adopted plan afford optimum protection to the docks at minimum coat. The harbor study was conducted using a 1:150-scale concrete model geometrically similar to its prototype . It was concluded from the results of the model study that: (1) the originally proposed harbor plan with a 930-ft navigation opening immediately south of Pancake Island would not afford adequate protection to the docks and ships within the harbor, and would not provide safe navigation entrance conditions; (2) the originally proposed harbor plan with a 600-ft navigation opening on the south end of the harbor immediately west of Gull Island would provide adequate protection if spending beaches were added in critical areas of the harbor, and if the breakwater leg from Pancake Island to shore were constructed with a straight alignment and a crown elevation of at least +14 ft lwd; and (3) the best breakwater plan tested involved a navigation opening 600 ft wide located immediately east of Gull Island.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1949
- Accession Number
- ADA637731