Although annual and investment e:vpenditure data were not obtained 

 during the study, information on these ti'/o expenditures is available from 

 a study conducted in three Uontana counties (Fish and Wildlife Service, 

 1951c), Data from the county survey are assumed to be applicable to this 

 study, since the t;irpe of equipment used by the fishermen \7o.s similar to 

 that used by the cold-water fishermen interviewed during coxmty survey and 

 the license fee was the same. The county survey revealed considerable 

 variation in the per-person por-day expenditure for combined investment and 

 annual items betiToen cold-v:ater fishermen in Valley and Roosevelt Counties 

 (02.97) and Yellowstone County (yo.65); but because of the better sample 

 from YelloTJ-stone County 9/, it is believed that the Yellowstone Coiinty fish- 

 ermen' s expenditure for cold-xmter fishinr more closely approximates the 

 expenditures of the fishermen with which this report is concerned. Accord- 

 ingly, data from Yellowstone County, modified as indicated belov/, have been 

 applied in completing the analysis of the xlorth Fork Sun -liver and associated 

 fisheries. 



The Y?llov;stone County survey indicated that the average cold-water 

 fisherman spent $3.65 per day for combined annual and investment items, 

 but it was necessary to modify this value before it could be used for the 

 present purpose. The data gathered in the county survsy referred to the 

 per-person per-day expenditure of the average license holder rather than 

 the average fisherman in the field. Therefore, the data v;cre weighted 

 according to the number of times the fisherman went fishing, to obtain 

 the expenditure for the average individual in the field. I.iodif ication 

 of the Yellowstone County data was accomTlished as follovTs: The average 

 season expenditure for combined an?iual and investment items (033.50) was 

 divided by the average niuaber of days (12.5) the fishermen spent cold-water 

 fishing to determine the per-day expenditures of 02.68 (rounded to $2.50). 

 Approximately tliree -fourths of the $2,63, or 02.2O, was for investment 

 items, and the remaining 0o,48 was for annual expenditures* after rounding, 

 these figures v/ere 02,05 and OO.'iS, respectively. 



Using the combined trip and transportation expenditures obtained dur- 

 ing the creel census (belov; Gibson Reservoir, 03.41j Gibson Reservoir, 

 04.07; abnve Gibson Reservoir, 0".2O; and Wood Lake, 03.64) with the com- 

 bined annual and investment e:-:^enditures (02. 50) from the Yellowstone 

 County survey, average total expenditures per person per day of about 

 05.91 for the area below Gibson Reservoir, 06,57 for Gibson Reservoir, 

 vlO,70 for the area above Gibson Reservoir, and 06,14 for Wood Lake v/ere 

 derived. The percentage distribution of the component parts of the total 

 daily expenditure per person are shoii/n for each fishery in Fig. 5, 



9/ Eighty-trro percent of the 187 license holders in Yellowstone 

 County could be classified as cold-v;ater fishermen, as against only 18 

 percent of the 170 license holders interviewed in Valley and Roosevelt 

 Counties (Fish and Wildlife Service, 1951c), 



25 



