Returning Napa River to its original navigational depths

The U.S. Army Corps of Engineers awarded Pacific Dredge & Construction, LLC. (PDC) the Napa River Maintenance Dredging project recently.

Pacific Dredge

The project’s goal is to return the river to its original navigational depths, allowing boats to transit entirely throughout the river.

To perform this project, Pacific Dredge & Construction, LLC. is using its smaller rig, “Horton,” in conjunction with the 300 cu yds scows Thing 1 and Thing 2, along with the In-Harbor tugboat Cadet.

Pacific Dredge photo

The dredged material is taken by scows to be offloaded at a temporary disposal site.

A subcontractor was hired to perform the upland offloading portion of the project with an E-Crane barge and earth-moving equipment.

The County of Napa offered a disposal site for offloading dredged materials and hired a subcontractor to off-haul sediments to their destination.

For this project, the river is also divided into three Reaches 1, 2 and 3.