Breakwater Rehabilitation Study, Crescent City Harbor, California Coastal Model Investigation

An undistorted scale hydraulic model study was conducted to develop an adequate repair plan for a section of the Crescent City breakwater which as armored with dolosse. The damaged area was to be repaired with 42-ton dolos. It was desired to quantify the number of armor units required, the optimum slope on which to place the dolosse, overall constructability, and methods of stabilizing the transition areas. Based on results of model tests, a combination of trenching and buttressing with 25-ton armor stone is a constructable method of stabilizing the transition area.