The San Francisco Bay to Stockton Improvement Project is a Congressionally authorized study being performed by the U.S. Army Corps of Engineers (Corps) together with local partners to identify and potentially recommend for Federal funding one or more projects for navigation improvements. 

The Port of Stockton is the non-Federal sponsor for the study and Contra Costa County is a project partner.  Other agencies and stakeholder groups will also be involved in the planning process.

The study area includes the John F. Baldwin and Stockton Ship Channels, which extend 75 nautical miles from the Pacific Ocean, just outside the Golden Gate, to the Port of Stockton.  The project is divided into two separate reaches, with the John F. Baldwin Ship Channel extending from the Golden Gate to Chipps Island, and the Stockton Ship Channel extending from Chipps Island to the Port of Stockton.  Portions of the reaches have been deepened in the past; however, not all reaches attained authorized dimensions.  Currently, the Corps is reevaluating the authorized Federal project to determine the extent to which changes to channel dimensions are warranted.