Manson Completes Channel Islands Harbor Dredging

The U.S. Army Corps of Engineers, Los Angeles District, has completed maintenance dredging of the Channel Islands Harbor, California.

Work on the $9.45 million contract, awarded to Seattle-based Manson Construction, started back in December 2016.

During the works, Manson’s hydraulic cutter-head suction dredge, H.R. Morris, dug up 1.54 million cubic yards of sediment from the harbor entrance and sand trap. The material was then piped to and placed on nearby beaches.

This project is vital to maintaining safe navigation in and out of Channel Islands Harbor and to maintaining the downcoast beaches that would otherwise be lost to erosion,” said Jeff Cole, Corps project manager.

The Corps typically dredges every two years under legislation that authorized the small craft harbor and sand trap to be built in the early 1960s.

The harbor was designed to trap sand to prevent loss to the submarine canyon off of Port Hueneme and to provide dredged material for beach replenishment for downcoast beaches.

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