BUREAU OF RECLAMATION
NAVAJO RESERVOIR
SPRING PEAK RELEASE SCHEDULE
May 8, 2008

SENT VIA FAX AND E-MAIL


Due to decreasing inflow forecasts and after conferring with the US
Fish and Wildlife Service, the release pattern and duration of the
spring peak release has been modified.

In the last Navajo Release Notification (dated May 5, 2008), we
announced that the Bureau of Reclamation would begin ramping up the
release from Navajo Reservoir beginning May 9, 2008.  That scheduled
change has been cancelled.  Releases will continue at the present rate
of 2,200 cubic feet per second (cfs) through the weekend of May 9th,
10th and 11th. 

The release will be decreased from 2,200 cfs to 1,000 cfs on Monday,
May 12th.  The release will remain at 1,000 cfs until Monday, May 19th,
when it will be increased to 2,000 cfs.  The release will remain at
2,000 cfs until Friday, May 23rd, when it will be increased to 3,000
cfs.  The release will remain at 3,000 cfs through Monday, May 26th.  On
Tuesday, May 27th, releases will be increased to 4,000 cfs and the
following day, Wednesday, May 28th, releases will be increased to 5,000
cfs.  Beginning on Thursday, June 19th, the release will begin to be
gradually decreased until it reaches 500 cfs on Wednesday, July 2nd.
The attached chart shows the daily release rates throughout the spring
peak release period.

At various times throughout the spring peak release, the release will
be temporarily reduced in order to accommodate required inspections of
the outlet works.  These inspections are tentatively planned to occur on
June 10th, and the week of June 23rd.  Additional notices will be
provided in advance of each of these inspections.

Adjustments may be made to the spring peak release duration if the
inflow forecasts change.  Reclamation will provide updates to the
release schedule if any changes occur.  If you have any questions,
please contact Pat Page at (970) 385-6560 or e-mail him at
ppage@uc.usbr.gov
.

 

Wednesday, May 28th - Thursday June19th. 5,000 cfs

Friday, June 20th  4,500 cfs

Mondya, June 23rd. 3,400cfs

Wednesday, June 25th 1,750cfs

Friday June 27th - Monday June 30th 1,500

Wednesday July 2nd 500cfs

 

BUREAU OF RECLAMATION
NAVAJO RESERVOIR RELEASES
April 8, 2008

SENT VIA FAX AND E-MAIL

As a result of a drier than average March, and based on the April 1st
inflow forecast, the Colorado Basin River Forecast Center is now
predicting an inflow of 1,220,000 acre-feet (af) into Navajo Reservoir,
which is a decrease of 180,000 af from the previous forecast.  As a
result, when the ongoing inspections to the outlet works are completed
this week, the Bureau of Reclamation will only be increasing the release
from the reservoir to 2,200 cfs rather than the 4,000 cfs originally
scheduled.  The release will be gradually increased from 1,600 cfs
beginning at 7:00 a.m. on Friday, April 11, 2008, until it reaches 2,200
cfs by 11:00 am later that morning. 

Subject to updated forecasts and changing hydrological and weather
conditions, the release will remain at 2,200 cfs until the middle of
May, at which time the release will be increased to 5,000 cfs where it
will remain until approximately the end of June.  More detailed
information will be provided on the timing and duration of the 5,000 cfs
release as forecasts are updated.

Releases are made for the authorized purposes of the Navajo Unit, and
to attempt to meet flow recommendations for the endangered fish in the
San Juan River.  If you have any questions, please contact Pat Page at
(970) 385-6560 or e-mail him at ppage@uc.usbr.gov.