Ta'ble 2. — Total mun'ber of fishermen, total hours 

 of angling effort, total catch of fish, and 

 catch per man hour on Firehole and Madison Rivers 

 from 1953 to 1957 and on Gibbon River from 1953 

 to 1956. 



to catch during late summer . The planting of 

 adult rainbows in 1954 and 1955 from June 13 to 

 July 24 was also partly responsible for the in- 

 crease in pressure during early July in the 

 Madison and the lower Gibbon . 



Rainbow trout catch 



The Firehole was never stocked with 

 adult rainbows and the catch has represented 

 almost entirely wild fish (table 3). The catch of 

 wild rainbow was: 1954, 2,199; 1955, 4,007; 1956, 

 2,204; and 1957, 1,946. The rainbow trout fish- 

 ery in the Madison River has changed due to 

 changes in planting procedures . The wild rain- 

 bow trout fishery in the Madison remained rela- 

 tively stable from 1954 to 1957, with catches as 

 follows: 1954, 1,643; 1955, 1,972; 1956, 1,301; 

 and 1957, 1,040 (figure 3). The catch of hatch- 

 ery fish increased in direct proportion to the 

 size of the planted fish. In 1954, 25,006 eight- 



to-ten -inch rainbow trout were planted and the 

 catch was 7,705 fish. In 1955, 21,687 ten-to- 

 twelve -inch rainbow trout were planted and the 

 catch was 10,663 fish. The rainbow trout fish- 

 ery in the Gibbon was essentially restricted to 

 G-1, below Gibbon Falls. Many hatchery fish 

 stocked in the Madison in 1954 were caught in 

 this section of the Gibbon . The plantings in 

 1955 were made both in the Gibbon and the 

 Madison . The rainbow fishery in the Gibbon in 

 1954 and 1955 consisted mostly of these plants 

 and only 395 were caught in 1956 when no 

 plantings were made . 



Brown trout catch 



The brown trout catch has been completely 

 from wild stock . The catch in the Firehole ranged 

 from 2,927 in 1953 to 5,615 in 1955 (table 3). 

 There was a negative coefficient of correlation of 

 0.124 between the fishing pressure by hours and 



10 



