1.0 



0.8 



u 

 <55 0.6 



o 

 e 

 o 



o 0.4 



e 



0.2 

 0.0 



O Rainbow 



B Brown 



D Mountain whitefish 



D Cutthroat 



:3 



^*l 



f/^ 



1975 



1976 



1977 



1981 



Yew 



Figure 12. Proportion of the catch for each salmonid species in the Snoball section of the Madison River, 

 Montana, based on creel survey data from 1975 to 1981. This section was closed to fishing in 1977. 



In addition to official FWP creel survey data, some anecdotal data was provided by an angler 

 who has fished the Madison consistently since 1974 and has kept a detailed fishing log since 

 1986. His information displays the same pattern in the proportion of catch changes (Figure 14). 

 Although this data is not official, it does have the added benefit of somewhat controlling for the 

 skill of the angler, which is often a confounding factor in creel analysis. 



1.0 



E3 Rainbow 



® Brown 



D Mountain whitefish 



D Cutthroat 



1977 



1981 



1995 



1996 



Year 



Figure 13. Prof>ortion of the catch for each salmonid species in the Pine Butte section of the Madison 

 River, Montana, based on creel survey data from 1977 to 1996. No data were collected in 1981 or 1996 

 for mountain whitefish. 



Evaluation of 199S and 1996 Creel Data and its Implications related to Whirling Disease 

 In the Madison River, Montana 



Montana Fish, Wildlife and Parlu 

 March 12. 2002 



25 



