The following report on the Temporary Barriers Project is for your information and action, as appropriate.  This report will be transmitted whenever changes occur to the operation of the barriers, and as a result of modeling and/or field monitoring of water levels in the south Delta.

STATUS AS OF:  December 8 , 2006  

Head of Old River Barrier (HORB):

The spring and fall HORB was not installed this spring due to high flows and favorable dissolved oxygen conditions in the SJR. 

Agricultural Barriers (Old River near DMC, Middle River, Grant Line Canal):

The Middle River barrier was completely removed on November 19, 2006.  The “in-water’ work for Grant Line Canal barrier was completed on December 5 and cleanup was completed on December 7.  The DMC barrier in-water work was completed on December 7, with cleanup expected to be finished December 8.

This will be the last update until the 2007 season begins in early April.  Thanks everyone for another successful year for the Temporary Barriers Project!  Have a happy holiday season!!

These weekly updates are also available for your information on our website

If you know of anyone else that should be receiving this update, please let me know by email, and I'll add them to the mailing list.  Thanks!


Mark A. Holderman, P.E.
Chief, Temporary Barriers Project and Lower San Joaquin
Bay-Delta Office

California Department of Water Resources
1416 9th St., P.O. Box 942836
Sacramento, CA 94236-0001

Phone: (916) 653-7429  FAX: (916) 653-6077
Cell/Pager: (916) 601-6036 E-Mail: