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San Joaquin River Dissolved Oxygen TMDL

The San Joaquin River Dissolved Oxygen TMDL was adopted by the Regional Board on 27 January 2005. It has been approved by the State Water Resources Control Board (SWRCB) and the Office of Administrative Law. Final approval by U.S. EPA was received on 27 February 2007. The TMDL is a Basin Plan Amendment that includes a Control Program to reduce the amount of oxygen demanding substances and their precursors in the San Joaquin River. For additional information please contact Christine Joab at (916) 464-4655 or by email at cjoab@waterboards.ca.gov.


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  • San Joaquin River Dissolved Oxygen Control Program Fact Sheet

  • Downstream Control Program Studies and Associated Peer Review
    The last of the Control Program studies has been completed along with an Independent Peer Review of the models developed for the TMDL. These studies, referred to as the "Downstream Studies", were mainly focused in the reach of the San Joaquin River between Mossdale and Turner Cut. Final report documents for the studies and the Associated Peer Review can be found under the heading below titled, "Implementation of TMDL Required Studies".

  • Draft Staff Report
    The Control Program requires an evaluation of the allocations and implementation provisions once the studies are completed. Staff has reviewed the results of the studies and has developed a draft Staff Report with recommendations for future actions to address the DO impairment. The recommendations made within the draft Staff Report take into consideration the results of the studies, Central Valley Water Board regulatory programs, other actions being undertaken, and current dissolved oxygen conditions in the San Joaquin River.

30-DAY PUBLIC COMMENT PERIOD: Staff is accepting public comment on the draft Staff Report. Comments should be submitted to Christine Joab at Christine.Joab@waterboards.ca.gov no later than December 15, 2014.

The draft Staff Report will be used to support a draft Resolution for Board consideration during the February 5-6, 2015 Central Valley Water Board meeting.

Public Meetings and Workshops

Implementation of TMDL

2005 Final TMDL Report and Approvals

Development of 2005 Basin Plan Amendment


--Web page updated 11/17/2014