Extending the rubble mound breakwater is likely not an option for the South Portage Cove harbor expansion project, according to the preliminary results of a recently conducted geotechnical survey.
Installation of a metal wave barrier will probably be pursued instead, Haines Borough officials said this week.
Based on a draft report released by PND Engineers, soft clay deposits and other sediments on the sea floor would make constructing a rubble mound breakwater “a challenging engineering…
