The U.S. Army Corps of Engineers, Seattle District, will begin annual Grays Harbor maintenance dredging in the Outer Harbor on April 1, utilizing their hopper dredger vessel Yaquina.
Working around-the-clock through April 16, the Yaquina will dredge the Grays Harbor Entrance, Point Chehalis and South Reach channels, USACE said in its latest release.
The Yaquina will place dredged materials at the Washington State Department of Natural Resources-managed Point Chehalis open water disposal sites and the Half Moon Bay nearshore beneficial use site.
A second USACE’s hopper dredger, the Essayons, is scheduled to arrive sometime in mid-April and work through early May to dredge the Grays Harbor Bar, Entrance and Point Chehalis reaches.
The Essayons will place dredged materials at the South Beach nearshore beneficial use site and the Washington State Department of Natural Resources-managed Point Chehalis open water disposal sites.
The vessels are expected to dredge approximately 800,000 cubic yards of material from the Bar, Entrance, Point Chehalis and South reaches combined.