Movement and survival of presmolt steelhead in a tributary and the main stem of a Washington river
survival, steelhead, smolt, upstream, juvenile
Journal or Book Title
North American Journal of Fisheries Management
Presmolt steelhead (Salmo gairdneri) were marked in Gobar Creek from 1981 to 1984and movements between this creek and the main stem of the Kalama River in Washington wereexamined. Some of these migratory parr travelled a considerable distance down the river,whereas others remained in the tributary. We found that migrant parr were capable of surviving tothe smolt stage. Most migrant parr remained in downstream areas prior to smolting, with fewreturning upstream and emigrating as smolts from Gobar Creek. Of all juvenile steelhead fromGobar Creek that survived to become smolts, most emigrated from the creek to downstreamareas as parr and subsequently outmigrated from these downstream areas the following year.The freshwater survival of a majority of the steelhead spawned in tributaries may depend largelyon the availability of suitable rearing environments in downriver areas.