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Bay-Delta Office
Department of Water Resources

1416 9th Street,
Sacramento, Ca 95814

Mailing Address:
P. O. Box 942836,
Sacramento, Ca 94236-0001

Department of Water Resources Logo
 Stockton DWSC Demonstration Dissolved Oxygen Project
South Delta Improvements Program
Temporary Barriers Program
SDWSC Aeration Facility
Proposition 84

Aeration Facility Program
What's New?


Aeration Facility Operational Testing Status
Aeration Facility Map
Aeration Facility Documents
Monthly Dissolved Oxygen Data Reports
Frequently Asked Questions
Contact Us


What's New
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.

Aeration Facility Photos
Aeration Facility Schematic
Aeration Facility Overview
2 - 200 HP Pumps
Air Compressors For Fish Screen Airburst System
9,000 Gallon Liquid Oxygen Tank
Vaporizers (Converts Liquid Oxygen to Oxygen Gas)
Oxygen Gas Flow Meter and Control
Sparger (Injects Oxygen Gas into Top of U-Tube)
2 - 200' Deep Concentric U-Tube
30" Discharge Line
Diffuser with 6" Discharge Ports
Discharge Line Route and Diffuser Location

Aeration Facility Documents
SJR DWSC Demonstration DO Aeration Facility Initial Study/Mitigated Negative Declaration - February 2005
Deep Water Shipping Channel Aeration Demonstration Project
Biological Assessment for Operations-July 2007
Initial Testing of Aeration Facility Capacity and Efficiency – December 2008
Effects of the Head of Old River Barrier on Flow and Water quality in the San Joaquin River and Deep Water Ship Channel-March 2010
2008 Operations Performance Report-April 2010
-Appendix A
-Appendix B
Low Dissolved Oxygen Levels in the Stockton Deep Water Shipping Channel - Adverse Effects on Salmon and Steelhead and Potential Beneficial Effects of Raising Dissolved Oxygen Levels with the Aeration Facility-October 2010

UCD BML Juvenile Salmon Hyperoxia Study
-Appendix III
-Appendix IV
-Appendix V
-Appendix VI
-Appendix VII

Stockton DWSC Demonstration DO AF Final Report – December 2010
-Appendix A

For additional documents, click here.

Frequently Asked Questions
Coming Soon.

Central Valley Water Board’s DO TMDL
San Joaquin River Dissolved Oxygen Total Maximum Daily Load (DO TMDL) Technical Working Group (TWG)
Rough and Ready Island Station

Contact Us

Requests for information and questions concerning this Stockton DWSC Demonstration Dissolved Oxygen Project may be directed to:

Bill McLaughlin
Stockton DWSC Demonstration Dissolved Oxygen Project
Bay-Delta Office
California Department of Water Resources
1416 Ninth Street
Sacramento, CA 95814

e-mail: williamm@water.ca.gov
Telephone: (916) 653-0628
FAX: (916) 653-6077

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