During summer, most age 0 steelhead in the Big Qualicum River inhabited areas over gravel (1-10 cm diameter) and at a mean depth of 30 cm, with no overhead cover. Most age 1+ fish resided over large gravel and cobble (5-20 cm diameter), at a mean depth of 53 cm, and in areas of heavy surface cover. Both ages avoided debris substrates and chose a focal point velocity of ca. 25 cm/sec. The relatively low density and more rigid habitat requirements of age 1+ steelhead indicate that management efforts in habitat improvement should be directed awards increasing prime habitat for this age group. Potential techniques are: (1) creation of 'clean, stable log placements, (2) creation of white water and tail area, and to a lesser extent (3) creation of artificial bank cover.
Pearlstone, P. S. M.. 1976. Management Implications of Summer Habitat Characteristics of Juvenile Steelhead Trout (Salmo gairdneri) in the Big Qualicum River. Ministry of Environment. Fisheries Management Report. 67