Ha, finally found my reference! Inland Fishes of Washington (Wydoski and Whitney, UW Press, 1979)lists the Nooksack as having a run of eulachon. They also list another anadromous smelt, the Longfin smelt (Spyrinchus thaleichthys), as being common from northern California to northern BC, including a landlocked population in Lake Washington. It's small size (3.5 to 5.0 inches) and the difficulty of locating large numbers of them have kept them from becoming a target of commercial or sport fishermen. It apparently spawns earlier than the eulachon, normally from October to December.