MONTANA (Cont. ) 



3. Effects of Boat Fishing on the Cutthroat and Dolly Varden Trout Population of the 

 North Fork of the Flathead River as Relates to Conventional Bank Fishing. 



A great deal of public pressure has been exerted to outlaw fishing from or 

 with the aid of a boat on the North Fork of the Flathead River which borders 

 Glacier National Park. This project was designed to measure the effects of 

 boat fishing and the relative efficiency of boat fishing and bank fishing through 

 creel census and fishermen counts from the ground and with the aid of an air- 

 plane. Observations on the life history and movement of the cutthroat trout 

 and dolly varden trout were made as incidental objectives. 



North Fork, Flathead River, Flathead County; began May 1953, to close 

 Decennber 1953; Frank A. Stefanich, Leader; reports available. 



Address inquiries to: Frank A, Stefanich, Department of Fish and Game, 

 Route 1, Kalispell, Mont. 



4. Relationship of Trout and Yellow Perch in Middle Thompson Lake. (FA: F-7-R 

 in part) 



Many trout lakes in the western half of Montana have had yellow perch intro- 

 duced with the usual result of a high population of stunted perch and a seemingly 

 decreased trout population. This project is designed to determine the most eco- 

 nomical and effective methods of restoring either or both perch and trout fish- 

 ing to this type of lake. 



State College cooperating; Thompson Lakes, Lincoln County; began June 1952, 

 to close November 1955; Frank A. Stefanich, Leader; reports available. 



Address inquiries to: Frank A. Stefanich, as in No. 3 above. 



5. The Effects of Logging on Pinkham Creek's Fish Population. (FA: F-7-R in 

 part) 



Pinkham Creek, containing a population of eastern brook and rainbow trout, 

 drains an area of virgin timber in northwestern Montana. Logging operations 

 began in 1952 by controlled cutting under the supervision of the U. S. Forest 

 Service. Annual observations of the streams fish population are made by use 

 of the electric shocker. These observations will be continued over a period 

 of years, as the logging operations progress, so that any changes in the fish 

 population may be noted. 



Pinkham Creek, Lincoln County; began August 1951, continuing; $200; 

 Frank A. Stefanich, Leader; reports available. 



Address inquiries to: Frank A. Stefanich, as in No. 3 above. 



6. Effectivene-gs of Smith Lake Rearing Pond. (FA: F-7-R in part) 



The primary objective of this project is to measure the economics of the 

 operation of Smith Lake as a cutthroat trout rearing pond. The cost of the instal- 

 lation, the cost of the fry planted, the cost of the operation are connpared with 

 the value of the yearling trout produced. Production figures are obtained by 

 draining the pond and by making actual counts of the fish captured. 



Smith Lake, Flathead County; began July 1951, continuing; $700; Frank A. 

 Stefanich, Leader; reports available. 



Address inquiries to: Frank A. Stefanich, as in No. 3 above. 



7. Establishment of Measures of Abundance of Cutthroat Trout in Ashley Lake. 

 (FA: F-7-R in part) 



At one time the cutthroat trout was abundant in Ashley Lake, but in recent 

 years the number of cutthroat has dwindled to a dangerous low. Trout in Ashley 

 Lake are a source of spawn for hatchery use, and traps are operated on four 

 tributaries. The purpose of this project is to determine the relative efficiency 

 of creel census and counts at the spawning weirs as measures of the size of the 

 cutthroat population. 



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