Subject: FN0784-Salmon - Fraser River Sockeye and Pink Update - Areas 11 to 29 - August 4, 2017
The Fraser River Panel met on Friday, August 4 to receive an update on the
migration of the Fraser sockeye and pink runs to date and review the status of
migration conditions in the Fraser River watershed.
Gill net test fishing catches remain low but have improved slightly Area 12 and
have continued to fluctuate at low levels in Area 20. Purse seine test catches
have shown the same pattern with increases in Area 12 and 13, while Area 20 has
been on a declining trend. The combination of the gill net and purse seine test
catches in the two approach areas has resulted in an increase in the projected
diversion rate through Johnstone Strait to 58% compared to the pre-season
forecast of 51%.
In-river gill net test fishery catches have remained low, with the exception of
a large increase observed at Whonnock yesterday. Cottonwood catches have been
very low for the past several days.
The most recent DNA samples taken in the marine purse seine test fisheries show
sockeye stock compositions in Area 20 of approximately 14% Early Summer, 77%
Summer and 8% Late run stocks. In Area 12, the purse seine stock composition
was 10% Early Summer, 83% Summer and 7% Late run stocks. In-river stock
identification information remains highly uncertain as sample sizes continue to
be extremely low.
Daily Mission hydroacoustics escapement estimates have increased in recent days
with the largest daily escapement estimate to date being 16,100 on August 3.
The total estimated sockeye escapement as of August 3 is 167,700. Hell's Gate
observations continue to be extremely low in recent days however there is no
evidence of passage issues at Hell's Gate.
During the call today, the Fraser Panel made no changes to the Early Stuart or
Early Summer run sizes of 50,000 and 166,000 respectively. The estimated
escapement past Mission of Early Stuart, Early Summer and Summer run sockeye as
of August 3 is 45,300, 52,900 and 69,100 fish, respectively.
At the current run size for Early Summer run sockeye, there is no TAC available
and as such no sockeye directed fisheries are being considered at this time. In
addition, Summer run stocks are tracking near the p10 forecast level of
1,065,000, however, it is too early to make any run size modifications at this
time.
On August 3, the Fraser River water discharge at Hope was 2,870 cubic metres
per second, which is approximately 31% lower than average for this date. The
water temperature of the Fraser River at Qualark Creek on August 3 decreased to
18.6° celcius which is 0.6° celcius higher than average for this date. The
forecast is for water temperatures to increase to 20° celcius by August 9. Due
to the very low discharge levels, water temperatures are highly influenced by
air temperatures.
For pre-season planning purposes the Fraser Panel had adopted management
adjustments for Early Summer, Summer and Late run sockeye that reflect the
forecast water temperature and discharge conditions based on the May and June
information for Early Summer and Summer run sockeye, and anticipated river
entry dates for Late run fish. Due to the very poor return of Early Summer run
stocks they are now being managed based on a Low Abundance Exploitation Rate
(LAER) limit and as such there will be no modifications to the in-season
management adjustments for this group. Management adjustments are additional
fish that are set aside from identified harvest levels and allowed to migrate
upstream in an attempt to assist in achievement of identified spawner
objectives for the different run timing groups. In-season information in the
coming weeks will help to inform future decisions on management adjustments for
the Summer management group while the Early Stuart, Early Summer and Late run
management groups will be managed based on the respective LAER for each group
(10% for Early Stuart and Early Summers and 20% for Lates). There will be no in-
season estimates of management adjustment for Early Stuart, Early Summer and
Late run groups in 2017.
At this time, it is too early to assess the return of Fraser pink salmon.
Recent test fishery catches in the marine approach areas have shown increasing
abundances of pink salmon. The first stock identification samples analyzed for
Areas 12 and 20 purse seine test fisheries indicate Fraser origin pink salmon
comprise 24 and 16 percent respectively. Run size and timing updates for Fraser
pinks will likely begin in mid to late August.
First Nations food, social and ceremonial sockeye fisheries have been
restricted by a 4 week window closure protecting Early Stuart and the earliest
timed Early Summer run stocks with limited fishing opportunities to date
directed at chinook salmon. Due to the apparent later than average run timing
and/or weakness in the returns of Early Summer and Summer run stocks, the start-
up of sockeye directed FSC fisheries will continue to be delayed until there is
an identification of TAC for Early Summer and/or Summer run sockeye.
Food, social and ceremonial fishers in marine approach areas as well as the
Fraser River are requested to check for the opening times and any restrictions
in their local area.
Given the low returns to date there are no fisheries directed upon Fraser River
sockeye scheduled at this time, and updates will continue to be provided
following meetings of the Fraser River Panel on Tuesdays and Fridays of each
week.
The next in-season meeting of the Fraser River Panel is scheduled to occur on
Tuesday, August 8, 2017.
FOR MORE INFORMATION:
Jennifer Nener 604-666-0789
Fisheries & Oceans Operations Center - FN0784
Sent August 4, 2017 at 1550
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