James C. Borawa, North Carolina Wildlife Resources
Commission, Division of Inland Fisheries, 37 New Cross North, Asheville, North Carolina
28805-9213; Voice 704-299-7023; E-Mail borawajc@mail.wildlife.state.nc.us
Keywords: creel survey design, trout fishery
Put-and-take trout fisheries in North Carolina have not been evaluated
since the early 1970s. In the intervening time, stocking frequencies and stocking rates of
individual streams have evolved at the discretion of innumerable fishery biologists. Since
so little was known about the characteristics of these fisheries, the North Carolina
Wildlife Resources Commission conducted pilot creel surveys on 6 streams in 1997. The
objective of these surveys was to obtain fishing pressure patterns and angler trip
characteristics for use in designing statistically valid and efficient creels in
subsequent years. The pilot creel work schedules were subjectively determined with the day
of stocking as the beginning of each period. Beginning with the afternoon of each stocking
day, morning and afternoon work periods were alternated. Major changes in future
put-and-take creel survey designs resulting from this study include: reducing the defined
work day by 2 hours, changing the probability of selecting morning and afternoon work
periods from 0.5:0.5 to 0.35:0.65, and changing the stratification of work days from
weekend days and weekdays to stocking day plus 4 days following and remaining days until
the next stocking. These design changes were implemented in 1998 and are expected to
improve the precision of the statistical estimators of these creels.