IDAHO (Cont. ) 



7. Statewide Fishing Harvest Survey 



Under this project all licensed Idaho anglers are sampled for fishing 

 intensity and harvest data through the use of a questionnaire. Intended use 

 of the findings is for management of sport fisheries on a statewide or large- 

 area basis. 



Statewide; began September 1954, indefinite; $3,000; Forrest R. Hauck, 

 Leader; reports available. 



Address inquiries to: James C. Simpson, as in No. 1 above. 



8. Experimental Rough Fish Control 



This study is designed to determine economical methods of harvesting non- 

 game fish species and ways in which they might be used. The effect of partial 

 removal of rough-fish populations on game fish is also being measured. 

 Various types of trapo and nets are being evaluated as to their ability to catch 

 fish so that they may be used in waters where the more conventional method 

 of taking fish in seines cannot be used. Life history data of the species of 

 non-game fishes \inder study are also being collected. 



Lake Lowell, Lake Wilson, and American Falls Reservoir; began De- 

 cember 1954, to close December 1957; $25,000; Monte Richards, Leader. 



Address inquiries to: James C. Simpson, as in No. 1 above. 



9. Silver Creek Stream Improvement 



The objective of this project is to evaluate several types of improvement 

 structures in Silver Creek. Every few years this stream is swept clean of 

 the aquatic vegetation, Chara principally, which provides cover for the 

 rainbow trout populations. The improvement structures are of K-dam, sheet- 

 piling, and concrete block (tongue and groove) construction, and are so placed 

 that pools will be formed to replace the loss of cover. 



Blaine County; began September 1954, to close November 1958; $5, 000; 

 Robert Irving, Leader. 



Address inquiries to: Jannes C. Simpson, as in No. 1 above. 



10. North Idaho and Boundary County Lake Development 



In these projects nine trout lakes were restored to recreational angling 

 by treatment of the waters and restocking with trout. In addition, a public 

 dock and boat launching area were developed on Pend Oreille Lake, making 

 possible the safe launching of boats adjacent to a public camp ground. 



Conner and Boundary Counties; began August 1954, closed September 1956; 

 $16,000; Paul Jeppson, Leader. 



Address inquiries to: James C. Simpson, as in No. 1 above. 



11. Rehabilitation of Stanley Lake 



The restoration of this 200-acre lake to recreational trout angling involved 

 the construction of a fish migration block in the outlet, eradication of the fish 

 in the lake, and restocking with rainbow trout. The migration block is a low, 

 concrete dam on the outlet. Fertilization experiments are planned on the lake. 

 Productivity measurements will be made when a nitrogen deficiency is over- 

 come and the four basic elements are brought into balance. 



Custer County; began July 1954, to close September 1957; $3300; Robert 

 Irving, Leader. 



Address inquiries to: James C. Simpson, as in No. 1 above. 



12. Waha and Blue Lakes Rehabilitation 



Two lakes in north-central Idaho were restored by eradication of rough fish 

 species and restocking with trout. Access roads and a parking and boat- 

 launching area were developed. 



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