
weight of trout declined from 0,60 pounds per fish in 1949 to 0.39 pounds 
per fish in 1950. The average rate of catch was 0.48 fish per hour of ef- 
fort in 1949, and it was 0.42 in 1950. 
The variation in expenditure per pound of fish between the 
Middle and Upper Sections of the Madison River [21] is attributable 
largely to the difference in the daily expenditure of the fishermen using 
these two stretches of stream, because the average weight of fish taken 
and the average rate of catch were quite similar on both areas, Fish 
taken in the two areas weighed 0.87 and 0.56 pounds respectively, and 
the average rate of catch was 0.62 fish per hour in the Middle Section 
and 0,55 fish in the Upper Section. The large daily expenditure for the 
Upper Section was due primarily to the large number of nonresidents 
who use the fishery. More than 55 percent of the fishermen using the 
Upper Section were nonresidents, as compared to 22 percent for the 
Middle Section, 
The high average expenditure per pound of cold-water fish 
($5.13) as compared to that for warm-water fish ($1.54) was due mostly 
to a generally lower average rate of catch and a higher daily expenditure 
for cold-water fishermen, The average daily expenditure for cold-water 
fishermen was $7,38, as compared to $3.72 for warm-water fishermen, 
The average rate of catch for the listed warm-water fisheries was more 
than two fish per hour while that for the listed cold-water fisheries was 
a little less than one-half fish per hour (25]. Although the average 
weight of cold-water fish was about 0.7 pounds, compared with about 0.5 
pounds for warm-water fish [25], the slightly higher weight of the one 
type of fish was more than offset by the higher rate of catch for the 
other type. 
The expenditure per surface acre of lakes or reservoirs, or 
per mile of stream, like the total expenditure on the area, varied con- 
siderably from area to area owing to differences in the daily expenditure 
and intensity of use. As already indicated, the daily expenditure is in- 
fluenced by the type of fishery, manner of access, number of nonresi- 
dents, and other factors, Intensity of use also is influenced by a 
variety of factors, among which are the types of fishery, manner of 
access, number of pounds of fish per hour of effort, and size of lakes 
or reservoirs, All the influencing factors are so variable that detection 
of any general principles is virtually impossible, and the expenditure 
per acre of lake or reservoir or per mile of stream is presented only 
as a matter of interest, Because of the variables involved, the listed 
averages have no real meaning nor any general applicability. However, 
