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Silver Creek Evaluation Study
by Robert J. Bell, Fisheries Biologist 1966
The data collected during this time
(until 1977) is different in that they were still stocking the creek at
this time. In this study, they noted an abundance of vegetation up
stream (above the HWY) and sparse vegetation downstream. They also
noted an increase in temperatures downstream, and an absence of
streamside vegetation downstream. This was a tagging study, temperature
study, scuba study, and creel study. They found over 96 % of the fish
they tagged did not move farther than 2 miles form where it was tagged
(1000 catchable rainbows were tagged). The scuba study augmented the
tagging study—they did 2 500’ sections (one on lower stalker and one
just below mouth of Loving creek). They also found trout and whitefish
populations to be stronger upstream- they saw large fish farther
upstream. They noted that years of low catch were associated with: low
flows, low planted fish, low reproduction rates. They noted that fly
fishermen caught more fish and the number of fly fishermen increased
late in the season. Fishermen success (from 1952-1966) ranged from .87
hour to 1.65 hour (in 1965). They surveyed four temperature transects
(start of S turns, by Bud Purdys house, Point of Rocks, and the Suzie
Q). They found temperatures warmed downstream as much as 5 C.
Healthy populations of trout and whitefish in upper three miles
of Silver Creek.
Aquatic vegetation in the upper portion if profuse, therefore
supporting larger fish.
Very
little migration was noted of catchable rainbows in Silver Creek. |