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:  November 16 , 2007

Head of Old River Barrier (HORB):

The HOR barrier was breached November 9.  The culverts, culvert gravel pad, and the center portion of the barrier have been removed.  Small points on the north and south side remain and will be completely removed after the Thanksgiving holiday.

Agricultural Barriers (Old River near Tracy [ORT], Middle River [MR], Grant Line Canal [GLC]):

The removal of the ORT and GLC barriers began on November 5 and November 6 respectively, with breaches occurring the following days.  The GLC barrier center weir has been removed and crews continue to work on the boat ramp.  The ORT weir and culverts have been removed and crews continue working on removing the last 20% of the boat ramp.  The MR barrier will be breached on November 27.  All in-water work will be completed before November 30, 2007.



Modeling was not done this week as the barriers are in various states of being removed.


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: