Lake Washington
sockeye salmon are cooperatively managed by the Washington Department
of Fish and Wildlife (WDFW) and three Puget Sound Indian tribes; the
Muckleshoot, Suquamish, and Tulalip tribes. Annually, the co-managers
base decisions on fishing seasons on counts made as the sockeye enter
freshwater at the Ballard Locks. When the run into the lake is expected
to exceed the spawner objective for the system, the surplus fish are
made available for harvest by recreational and Tribal fisheries. The
following is information on the 2007 Lake Washington sockeye salmon
return and the process that will be used to decide if fishing seasons
will occur.
The pre-season forecast
for the 2008 sockeye return is about 105,000. The estimate is based
primarily upon fry production from the spawners in 2003 and 2004. Since
lake and marine survival rates are highly variable from year to year,
the actual return to Lake Washington could be higher or lower than 105,000.
The spawning escapement
goal for the system is 350,000 sockeye salmon. If the projected return
is greater than 350,000 the excess will be available to provide for
sport and Tribal fisheries. The process for determining if there are
surplus sockeye for sport and Tribal fisheries is based on an in-season
estimate of total run size that is generated by counting the sockeye
as they enter the system at the Ballard Locks. Daily estimates are added
and the cumulative total is compared to various runsize projection update
models based on past years’ data and a total run estimate is calculated.
Although sockeye
are observed at the locks as early as mid-May, personnel from the Muckleshoot
Tribe and WDFW will conduct formal sockeye counts from June 12th through
the end of July. Counts conducted during this standardized time period
are the basis of the update model.
Reliable estimates
of projected total run size cannot be made until a significant portion
of the run has entered the system. State and Tribal biologists will
update this year's return beginning in early to mid-July. The mid-July
period is typically when more than 50% of the sockeye return has passed
the Locks. A determination will be made in early to mid-July if there
are sufficient sockeye to open fisheries, and the structure and duration
of any fishing seasons will be announced.
Although unlikely
in 2008, if there is a sport fishery it would probably be open in early
to mid-July. Updated in-season sockeye salmon counts from the Ballard
Locks can be viewed in the Sockeye Counts
section.