The average round-trip mileage per person per day was deter- 

 mined by dividing the total number of miles in the round trip (from 

 the point of origin of the trip to the point of contact) by the number 

 of fishermen in the party and the number of days in the fishing trip, 

 A. rate of 7 cents per mile was used to determine transportation costs. 

 Occasionally fishermen were visiting nearby or were on a business 

 trip; thus, use of mileage from the point of origin of the particular 

 trip to the point of contact should more nearly approximate the mile- 

 age actually traveled on the fishing trip. Extra miles which might 

 have been driven during the course of a fishing trip were disregarded 

 as there was no adequate way of determining the exact extent of extra 

 driving. Trip expenditures were converted to the average per person 

 per day by dividing by the number of people in the party. 



It is recognized that there were differences in the average 

 round-trip mileage and trip expenditures for the various check areas, 

 but an average daily expenditure figure (weighted by the number of 

 individuals in each yearly sample) was derived for each section. 

 These figures were then applied to estimates of the number of fisherman- 

 days and yield for the respective sections of river and the two reser- 

 voirs for derivation of total expenditures. 



In some instances complete data could not be obtained on all 

 aspects of the study, thus those interview records were left out for 

 purposes of calculating the particular aspects for which data were in~ 

 complete. Accordingly, the number of individuals in the various samples 

 listed in tables is not always the same, 



RESULTS OF CREEL CENSUS 



Based on data shown in Tables 2, 3, h, and 5, using prescribed 

 methods, and assuming that there was no difference in the relative use 

 or yield of the various sections from year to year, it is estimated 

 that approximately UO,772 fisherman -days were expended annually on the 

 river as a whole over the 3-year period 1950 to 1952 (Table 6), The 

 annual yield was about 80,U59 fish weighing 82,682 pounds. Separated 

 into the component fisheries, i,e„, stream or reservoir, annual fish- 

 ing pressure and yield for the 98 miles of stream was estimated to be 

 about 22,660 fisherman -days and 52,u2l4 fi s h weighing U8,385 pounds, 

 while that for the two reservoirs was about 18,112 fisherman-days and 

 28,035 fish weighing 3h»291 pounds. 



Considering the 98 miles of stream, fishing pressure and 

 yield per mile was about 231 fisherman -days and 535 fish weighing 

 [i9h pounds (Table 7), It will be noted from Table 7 that there was 

 considerable variation in the pressure and yield from check area to 

 check area, although that for each of the three sections was remark- 

 ably similar. The greater rate of use of Lower Bear Trap Canyon, 

 Channel, Ennis, and Madison Canyon Areas probably can be attributed 



15 



