Last site update: December 1, 2011.
New: Added the July 2007 report “Deep Water Shipping Channel Aeration Demonstration Project
Biological Assessment for Operations”.
Please check back often as we will be updating this site to give you the most up-to-date Aeration Facility program information.
Welcome to the Stockton Deep Water Ship Channel (DWSC) Demonstration Dissolved Oxygen Project website.
The purpose of this website is to provide
background and information on the purpose, goals, operation status, and monitoring location data for dissolved oxygen of the DWSC Aeration Facility Program.
The Stockton Deep Water Ship Channel Demonstration Dissolved Oxygen project is a multiple-year study of the effectiveness of elevating dissolved oxygen (DO) concentrations in the channel. DO concentrations in the channel drop as low as 2 to 3 milligrams per liter (mg/L) during warmer and lower water flow periods in the San Joaquin River. The low DO levels can adversely affect aquatic life including the health and migration of anadromous fish (e.g., salmon). The objective of the study is to maintain DO levels above the minimum recommended levels specified in the State of California Water Quality Control Plan (Basin Plan) for the Sacramento River and San Joaquin River Basins. The Basin Plan water quality objectives for DO are 6.0 mg/l in the San Joaquin River (between Turner Cut and Stockton, 1 September through 30 November) and 5.0 mg/l the remainder of the year.
The project comprises a full-scale aeration system including two – two hundred foot deep u-tube aeration tubes; two vertical turbine pumps capable of pumping over 11,000 gallons of water each; a liquid -to-gas oxygen supply system; and numerous ancillary equipment and control systems. The system has been sized to deliver approximately 10,000 pounds of oxygen per day into the DWSC. The aeration system is anticipated to only be operated when DWSC DO levels are below the Basin Plan DO water quality objectives (approximately 100 days per year). The project study includes an on-going assessment of DO levels in the DWSC and vicinity and a study of potential adverse effects of oxygen on salmon.
Aeration Facility Map
View the monitoring locations of dissolved oxygen for the DWSC Aeration Facility Map.
Frequently Asked Questions
Requests for information and questions concerning this Stockton DWSC Demonstration Dissolved Oxygen Project may be directed to:
Stockton DWSC Demonstration Dissolved Oxygen Project
California Department of Water Resources
1416 Ninth Street
Sacramento, CA 95814
Telephone: (916) 653-0628
FAX: (916) 653-6077