BATTLING THE BERING SEA: ST GEORGE ISLAND'S BERM BREAKWATER

  • Philip Blackmar
  • Ronald McPherson

Abstract

St. George Island, Alaska is located in the Bering Sea more than 320 kilometers (200 miles) north of the nearest Aleutian Island. During original design and construction of the fishing harbor at St. George Island in the early 1980's, stone large enough for a conventional breakwater was not available to quarry on the island, so the project utilized a berm breakwater approach with the available local stone. The long-term performance and service life of the berm breakwaters is reviewed in this paper. Construction of the berm breakwater was completed in 1987 and the breakwaters remained functional for nearly 20 years with little maintenance. In the winter of 2015/2016, approaching 30 years since initial construction, significant damage occurred during a winter storm. Repairs utilized a berm breakwater approach similar to the original design. Repairs were completed in 2 phases due to the short construction seasons at the project site.

References

Alaska Mapped. 2013. Alaska Mapped and the Statewide Digital Mapping Initiative. Webpage, http://www.alaskamapped.org/.

Bloomberg, R. and P. Green. Berm Walls Tame Violent Seas. ENR, 1988. 43-45.

HDR. 2013. RE: Field Data Collection at St. George Harbor, AK. Memorandum Prepared for the Alaska DOT&PF.

HDR. 2017. RE: Design Basis for Breakwater Repair Design (Phase 2). Memorandum prepared for the Alaska DOT&PF.

PND. 1984. St. George Harbor. Construction Drawings prepared for the City of St. George.

PND. 2007. Saint George Harbor Breakwater Storm Repairs. 2006 LIDAR Survey As-Built South Breakwater Sections.

PND. 2008. Saint George Harbor Repairs: Project Summary - Rev 2. Project summary prepared following construction of breakwater repairs.

St. George Future Bright: Island's Port Opens New. Alaska Construction & Oil, 1986. 16-18.

Published
2018-12-30
How to Cite
Blackmar, P., & McPherson, R. (2018). BATTLING THE BERING SEA: ST GEORGE ISLAND’S BERM BREAKWATER. Coastal Engineering Proceedings, 1(36), papers.20. https://doi.org/10.9753/icce.v36.papers.20