Montioring and Modeling of Tandem Breakwater System at Hammond, IN

Anglin, D.; MacIntosh, K.; Prehn, J.; Werren, D.; ,

Montioring and Modeling of Tandem Breakwater System at Hammond, IN

by D. Anglin, (A.M.ASCE), Baird and Associates, 1-1145 Hunt Club Road, Ottawa, Ont. K1V 0Y3, Canada,
K. MacIntosh, (A.M.ASCE), Baird and Associates, 1-1145 Hunt Club Road, Ottawa, Ont. K1V 0Y3, Canada,
J. Prehn, (A.M.ASCE), Baird and Associates, 2981 Yarmouth Greenway, Madison, WI 53711,
D. Werren, (A.M.ASCE), Baird and Associates, 2981 Yarmouth Greenway, Madison, WI 53711,

Document Type: Proceeding Paper

Part of: Breakwaters '99: First International Symposium on Monitoring of Breakwaters

Abstract:

A tandem breakwater system was constructed in 1989-90 to provide protection for a large marina at Hammond, IN, at the south end of Lake Michigan. A five year monitoring program (1993-98), required by the State, was undertaken by Baird & Associates (Baird), and identified a number of concerns regarding the breakwater system, including the stability of the breakwater system and the level of protection it provides to the marina, particularly during periods of high lake levels. These concerns were realized during a period of moderately high lake levels in 1997-98, when several moderate storm events caused damage to the marina dockage system. In response to these concerns and events, a detailed physical model investigation was undertaken to quantify the performance of the tandem breakwater system under a range in wave conditions and water levels, and to assess design alternatives for breakwater improvements. This paper provides a detailed discussion of the monitoring program, including a discussion of the monitoring methodologies. In addition, the paper provides a summary of the physical model investigation and its key results.

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