The kodiak trawl experimentally replaced the midwater trawl at Sacramento in December
1994 with the hypothesis that the larger volume sampled by the kodiak trawl
will allow us to better detect the scarce winter run and larger sized late-fall
run chinook salmon better than the midwater trawl. The kodiak trawl survey at Sacramento (SR055X) is used to estimate
the relative abundance and timing of midchannal juveniles entering the delta.
The kodiak trawl is planned
from October through June, or potentially year round if resources are available.
Vessel (2) - 7.3m V8 inboard/outboard gas powered center
console boat and a 6.7m V6 outboard gas powered center console boat
Crew - two boat operators and three or four deckhands, depending on
flow conditions
Net specifications - 1.8m by 7.6m with a cod end mesh size of 0.32cm
Sampling effort - ten 20 minute trawls when river conditions permit
four days per week.
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