Sumay Bay Shoreline
Sumay Bay Shoreline
Wave Propagation Into Apra Harbor
Wave Propagation Into Apra Harbor
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Revetment Design at Sumay Cove, Guam

Sea Engineering, as part of the design-build team of Wilson Okamoto Corp. and Bulltrack-Watts JV, designed a revetment along approximately 270 feet of shoreline at the headland between Sumay Cove and Clipper Cove in Apra Harbor, Guam. Work included:

  • Review of existing available information concerning extreme wave conditions near Apra Harbor
  • Implementation of a finite element numerical model to calculate the transformation and transmission of waves to the project site at Sumay Cove
  • Analysis of oceanographic design criteria
  • Preparation of a basis of design report

The CGWAVE numerical model contained in the Surface water Modeling System was used for this analysis.  CGWAVE is a finite element model that employs the Mild Slope Equation to simulate wave characteristics in nearshore environments.  Model cases were run for 2, 5, 10, 25, and 50-year return period wave heights.  A riprap revetment concept plan was developed for the site based on the model results.

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