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Fishery Bulletin 93(2), 1995 



was in May (Dawley et al., 1985a, Dawley et al. 4 ). 

 Downstream migration of subyearling chinook 

 salmon smolts into the Columbia River estuary took 



4 Dawley, E. M., R. D. Ledgerwood, T. H. Blahm, C. W. Sims, J. T 

 Durkin, R. A. Kirn, A. E. Rankis, G. E. Monan, and F J. Ossiander. 

 1986. Migrational characteristics, biological observations, 



place somewhat later, mainly from May through July, 

 with a peak in late June or early July (Dawley et 

 al. 4 ). The average length of subyearling chinook 



4 (continued) and relative survival of juvenile salmonids entering 

 the Columbia River estuary 1966-1983. Final Res. Rep., Bonneville 

 Power Admin., Div. Fish Wildl., Portland, OR 97208. 



