Temporary Barriers Project Weekly Update - May
18, 2001
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: May 18, 2001
Head of Old River Barrier (HORB):
This barrier at the HORB site is operating normally
with all six culverts open.
Plans have changed for the HORB removal. Now DWR
will begin removing the HORB on Wednesday, May 23,
to provide outmigrating salmon smolts on the San
Joaquin River a couple extra days to move past the
Old River confluence.
Agricultural Barriers (Old River near DMC,
Middle River, Grant Line Canal):
The Grant Line Canal barrier is operating normally
(the GLC barrier culvert flap gates are tied open,
which is normal when the HORB is operating). DWR
took action Wednesday, May 16, to tie open the flap
gates on the other two barriers, in response to
rising Delta smelt salvage numbers at the export
facilities. The Middle River barrier culverts flap
gates were tied open on Wednesday as directed. However,
during a routine site visit today, DWR personnel
determined that the culvert flap gates on the Old
River at DMC barrier were NOT tided open properly
and were still operating tidally. DWR's construction
office and Delta Field Division personnel have scheduled
divers and support crews to fix the problem tomorrow
(May 19) and ensure the flap gates are properly
tied open.
A boat tender will be available at the DMC and
GLC sites to assist recreational boaters in using
the boat ramp to pass across the barrier. Boat ramp
operations for the DMC and GLC barriers are 0800-1800
hours Monday through Friday and 0700 - 1900 hours
on weekends and holidays.
Modeling Forecasts:
New modeling forecasts will be made on Monday, May
21. These forecasts will assume the HORB is removed
and all the flap gates on the ag barriers are tied
open (properly).
Notes:
These weekly updates are also
available for your information on our website http://sdelta.water.ca.gov/web_pg/tempmesr.html.
Tell your friends!
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 Land Management
California Department of Water Resources
Office of State Water Project Planning
1416 9th St., P.O. Box 942836
Sacramento, CA 94236-0001
Phone: (916) 653-7429 FAX: (916) 653-6077
Cell/Pager: (916) 813-6512 E-Mail: markho@water.ca.gov
|
