Population estimates of adult steelhead trout, obtained at the Keogh River on northern Vancouver Island, were compared to catch statistics and underwater fish counts collected elsewhere in British Columbia. Also, survival rates from smolt-to-adult for Keogh steelhead were compared to rates obtained at another research station, Snow Creek, Washington. Similar trends were found in all comparisons. Angler catch of wild fish in the Keogh River and neighbouring streams was closely correlated with the run size estimates of the Keogh River adult steelhead (n=13). Annual catch of wild fish on Vancouver Island followed a similar trend as the winter run of the Keogh, but the statistical correlation was weak unless years were sequentially paired (n=6). Representative winter-run streams to the south displayed catch statistics that weakly correlated with Keogh run sizes unless also sequentially paired. Of the larger rivers, there was close correlation between Nimpkish River catch on northern Vancouver Island but not Cowic
Ward, B.R., Wightman, J.C.. 1989. Monitoring Steelhead Trout at the Keogh River as an Index of Stock Status and Smolt-to-Adult Survival: Correlations with Other Data Sources. Ministry of Environment. Fisheries Management Report. FMR95
Topic: Fish and Fish Habitats
Keywords: steelhead, Keogh River, population estimates, survival, angler catch, stock monitoring, sport, fishery
Scientific Name: Oncorhynchus mykiss
English Name: Rainbow Trout
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