Lake Washington and Cedar River sockeye are on the agenda of an “important” Tuesday night public meeting that may help figure out where the troubled program goes from here.
With increasing inlake predation on smolts and more and more returning adults dying before they can even reach the spawning grounds or hatchery, there hasn’t been a season on the big lake since 2006 and this year’s forecast of just 15,153 is the lowest ever.
The “godfather” of the fishery, Frank Urabeck, says he’ll be asking anglers whether to just throw in the towel, maintain the status quo or request WDFW assess what could be done to restore the runs to harvestable levels.
That show of hands will follow presentations on the fish and hatcheries by WDFW’s Brody Antipa and Aaron Bosworth, and Amy LaBarge of Seattle Public Utilities, which operates a sockeye production facility on the system.
They will be speaking before the Cedar River Council, and during last year’s meeting on sockeye issues state research scientist Dr. Neala Kendall said that if nothing is done, her models said that the run could peter out in 20 years or so.
She said that restoring the fishery would be hard but it also wasn’t impossible.
Among the problems to overcome are smolt predation by native cutthroat trout and northern pikeminnow, as well as nonnative species such as largemouth, smallmouth, rock bass and yellow perch. Walleye and at least one northern pike are also in the lake and represent some level of threat to the young salmon.
Ocean conditions have been poorer for Lake Washington sockeye since 2006’s year-class enjoyed “insanely high” survival at sea, with one out of every two smolts that went out returning that year for an estimated Ballard Locks count of 472,000.
And in recent years a high percentage of sockeye have just disappeared between the locks and the Cedar — 77 percent last year, 80 percent in 2016 — likely victims of prespawn mortality.
The combination of too-warm water in the relatively shallow ship canal the fish have to transit before reaching the cool depths of the lake and preexisting diseases appear to be a one-two punch many aren’t surviving.
Potential solutions might include increased focus on removing piscivorous fish and trucking returning adults from the locks to the lake, but those would likely face headwinds from fans of those species and the cost.
Still, for how popular and productive the fishery once was, it would be interesting to know whether it’s feasible or not.
The April 23 meeting begins at 7 p.m. at the Renton Red Lion, 1 S. Grady Way, which is exit 2 on I-405.