||Based on the observation of adult chum salmon at Ives and Pierce Islands,
a stable tailwater elevation in the Ives and Pierce Islands area started
on November 9 with an initial targeted daytime tailwater elevation of
11.3 - 11.7 feet. This elevation was increased to 11.7 - 12.1 feet on
December 8. The elevation was increased again to 11.9 . 12.3 feet on
December 15. On several occasions in December it was necessary to allow
daily tailwater change exceedences and expanded hours for higher discharges
in order to pass high river flows. Also flows were ramped up and back
down during day and night hours on 7 dates between November 17 and December
8 for a chum spawning study. The Bonneville tailwater was increased
from 11.5 feet up to 15.1 feet in 1.2-foot increments every other hour,
then ramped back down again on the same schedule, for the study.
At a TMT conference call on December 29, the salmon managers stated
that spawning had ended. As a result, the action agencies. changed the
operational goal from limiting spawning access to a redd protection
operation for the incubation/emergence period. At that time the daytime
upper elevation limit was ended and a 24 hr/day minimum tailwater level
was set at 11.9 ft.
||Dworshak elevation was 1533.20 ft August 31. Until August 31 outflow
was a little above 10 kcfs. Outflow was reduced to 7 kcfs August 31.
Outflow temperature was maintained in the 45-47 degree range until.
September 14 when the temperature went up to around 54 degrees when
flow was reduced to 4.7 kcfs.
||Dworshak outflows were maintained near 10 Kcfs from July 7-11, 2004.
Dworshak outflows were ramped up to approximately 11.5 Kcfs on July
12th. Based on high air temperature concerns, Dworshak outflows were
ramped up to approximately 13 Kcfs on July 23rd, 2004 and were ramped
back down to approximately 11.5 Kcfs July 26th, 2004. Flows were ramped
down to 9.8 Kcfs (full powerhouse) on August 8. A release water temperature
of 45° F was targeted for most of the implementation period. The Dworshak
release temperature was reduced to 43° F from July 26th to August 4th,
also to attempt to counteract the effect of high air temperatures. On
August 31st, 2004 Dworshak was at an elevation of 1533.8 feet, leaving
slightly less than 200 Kaf of flow augmentation for the first portion
||Flows at Dworshak were increased to near 7 Kcfs on June 30th,
2004 and were further increased to near 10 Kcfs on July 6th,
|| Spill was approximately 30% of total outflow at John Day Dam through
August 31st, 2004. Spill averaged 39-40% of total outflow at The Dalles
Dam from July 1st to August 31st, 2004. At Bonneville Dam operations
were not in accordance with SOR 2004-15. Spill levels of 50 Kcfs occurred
throughout the following periods: 7-2 to 7-3, 7-8 to 7-12, 7-16 to 7-17,
7-20 to 7-23, 7-28 to 7-29. Also, during periods when Bonneville was
spilling 75 Kcfs during the daytime, spill was predominantly not to
the gas cap at night.
||Operators at Libby maintained fairly stable outflows of approximately
12.5 Kcfs after the Sturgeon Pulse Operation, however did not draft
to elevation 2439 feet by August 31st as specified in SOR 2004-14. On
August 31st, 2004 Libby was at an elevation of 2445 feet. Also, SOR
2004-14 asked for stable flows in September, flows in September fluctuated
between 9.6 and 14.0 Kcfs, with an average of 11.2 Kcfs.
||Spill ended June 23 and juvenile fish collection for transport began
||Priest Rapids average flow the week of May 31 to June 6 was 131 Kcfs.
||Bon forebay elevation was held within the specified limit 100% of
||The COE agreed to change the study to test two units instead of four
outside of 1%. Unit 6 was operated within 1% so the fish can be tested
and compared to those who pass units operating outside 1%. The COE said
that if there was less than a 5% difference in treatments, they would
continue with the modernization study. If the difference is more than
5%, the COE said they would consider discontinuing the study. Running
units outside of 1% was stopped May 28, 2004.
||TMT agreed to implement this SOR. Libby flows started to ramp up May
29 and reached 13 Kcfs on May 30th. Outflows were ramped up to 14 Kcfs
June 6th. Libby flows further ramped up to 15 Kcfs June 13th, and up
to 16 Kcfs June 20th. Libby outflows started to ramp down June 27th.
||A spill subgroup met on June 2nd to look at spill operations
at The Dalles and John Day, and agreed to revise the management strategy
so that the percentages (40%, 60%) are targets rather than maximums.
The COE and BPA have been operating with this strategy since Friday,
June 4, following a TMT conference call and agreement. In regard to
compensating for lost spill, the COE was unable to agree to provide
the type of compensation or mitigation the SOR requested
||Bon forebay elevation was held within the specified limit 97% of the
||The SOR was not implemented because unsafe transport conditions did
||Bon forebay elevation was held within the specified limit 95% of the
||Spill was not the 12 Kcfs requested in the SOR at Lower Granite, instead
it was 10.2-10.3 Kcfs from 5 PM on 5-5-2004 to 6 AM on 5-6-04. Also,
the SOR asks that the operation requested not come at the expense of
other fish protection measures, however spill was reduced at Bonneville
Dam to offset this operation.
||Flows on Friday May 7, 2004 averaged 123.9 Kcfs at Priest Rapids,
but then dropped to 107.0 Kcfs over the weekend. The week average flow
at priest Rapids Dam from May 10th, 2004 to May 16th
was 139.3 Kcfs and from May 17th to23rd flows
averaged 132.3 Kcfs. Flows continued to fluctuate outside the
designated bands several times per week.
||Bon forebay elevation was held within the specified limit 97% of the
||Spill at Lower Granite and Little Goose Dams ended on April 23rd,
2004 in accordance with the COEs decision on spring spill in the Snake
||BPA supported the SOR but claimed that they could only meet the 110
Kcfs as a weekly average. Over the week between 4-15-04 and 4-21-04,
flow average 114 Kcfs; from 4-22-04 to 4-28-04 flows averaged 110 Kcfs
at Priest Rapids. The SOR also calls for minimal daily fluctuations
at Priest Rapids to minimize; multiple days have exceeded the fluctuation
bands in 2004. Spill was increased to a day average of atlas 75
Kcfs on April 17th, 2004.
||Spill did begin on April 12th at all Lower Columbia projects
(McNary, John Day, The Dalles, and Bonneville). Spill has been
somewhat short of the Biological Opinion levels at John Day and The
||Lower Granite and Lower Monumental spilled through April 23rd,
the SOR asked for spill through April 30th. Ice Harbor
started spilled on April 13th at 1800 hours, the SOR asked
for spill on the evening of April 12th. Lower Monumental
spill did not begin as asked for in the SOR. The following is
a link to the COEs decision pertaining to spring spill on the Snake
||Spill began at Lower Granite on April 3rd, 2004 at 1800
hours, in accordance with the SOR. Spill began at Little Goose
at 1800 hours on April 7th, which was delayed in accordance
with the SOR due to few fish numbers. Ice Harbor started spilling
on April 13th at 1800, which was also delayed due to fish
numbers. Lower Monumental did not start spilling as called for
in the SOR. The MOP operations outlined in the SOR were implemented.
|| After some debate, the Action Agencies decided not to run McNary
turbines outside of 1% of peak efficiency, except for those for the
“McNary Modernization” study. This study includes a blocked design of
either turbines 2, 3, 4,and 5 or turbine nine operating outside of 1%