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FIRST YEAR RESULTS OF THE EVALUATION OF THE EFFECT OF FOREST 

 LAND MANAGEMENT ON TRIBUTARIES IN ROCK CREEK AND THE 

 BITTERROOT RIVER DRAINAGES 



by 



Montana Department of Fish, Wildlife and Parks 



Don Peters 



Abstract 



STATE DOCUMENTS COLLECTION 



JUN 2 7 1989 



MONTANA STATE LIBRARY 



1515 E. 6th AVE. 

 HELENA, MONTANA 59S20 



Fish population estimates were completed in August and September on 13 

 sections in IC streams in the Rock Creek and EitterrooL River drainages. Study 

 si ceF were selected in the same area that U. S. Forest Service embendedness '-'ork was 

 completed. Trout standing crop estimates were highly variable between streams and 

 v^thlr. diffeTPnt sections of streams sampled. The abundam-e of wst-Lslcpc cntrhroat 

 greater tnan or equal to 6.0 inches total length was highest in Sleeplag Child Creek, 

 138 fish per 300 m stream length and lowest in Gold Creek, 10 fish per 300 m. The 

 West Fork of Rock Creek in the Sand Basin area and Tolan Creek had the second lowest 

 population of westslope cutthroat greater than or equal to 6.0 inches total length, 

 30 <^ish per 300 meters. Habitat variables, fisherman harvest, arc ^isn movement 

 Kcxv all be involved in the measured variability in standing crops. 



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