WYOMING (Cont. ) 



University of Wyoming cooperating; Big Laramie River, Middle Fork 

 Powder River, Middle Piney Lake; began January 1952, to close December 1958; 

 Jack J. Kanaly, John W. Mueller, and Fred W. Jackson, Leaders; reports 

 available. 



Address inqueries to: Jack J. Kanaly, Wyoming Game and Fish Com- 

 mission, Cheyenne, Wyoming. 



4. North Platte River Reseivoirs Study 



When the Bureau of Reclamation completes Glendo Dam on the North Platte 

 River the surface area of the nine major impoudments in the State will more 

 than double the combined area of natural lakes and smaller impoundments. 

 This project was inaugurated to study fish management in these waters. The 

 North Platte River Reservoirs are being studied in particular. During the 

 current year, emphasis was placed on an evaluation of stocking procedures, 

 on studying the possibilities of increasing natural spawning, on rough fish 

 control, and on obtaining basic information on the fish population, harvest, 

 and aquatic environment in general. 



University of Wyonning cooperating; North Platte River; began June 1954, 

 continuing; $15,560; Lawrence W. Peterson, Leader; reports available. 



Address inquiries to: Lawrence W. Peterson, Wyoming Game and Fish 

 Commission, Cheyenne, Wyoming. 



5. Experimental Rough Fish Control 



An intensive carp control program consisting of seining and spot poison- 

 ing is under way. The objective of the study is to determine the effect on 

 carp and game fish populations and on the aquatic environment in general. 



Ocean Lake; began January 1955, to close December 1958; Fred M. 

 Eiserman, Leader; reports available. 



Address inquiries to: Fred M. Eiserman, Wyoming Game and Fish Com- 

 mission, Cheyenne, Wyoming. 



6. A Study of Competition Between Brown Trout and Rocky Mountain Whitefish 



The objective is to ascertain if some component of the environment or 

 the presence of Rocky Mountain whitefish is the limiting factor on brown trout 

 populations in Tongue River. The available food, water flows, water temper- 

 atures and surface acreage of the stream are being studied. Information on 

 populations, food habits, migratory habits, length-weight relationships and 

 age and growth rates has been collected for both species. 



Sheridan County; began April 1952, closed December 1956; Charles L. 

 Sowards, Leader; reports available. 



Address inquiries to: Charles L. Sowards, Wyoming Game and Fish 

 Comnnission, Cheyenne, Wyoming. 



7. A Study of Factors Affecting Game Fish Production in Sand Creek 



Sand Creek, with a standing crop of 250 pounds of trout per acre, is 

 possibly the most productive stream in the State. This project was initiated 

 to determine some of the basic factors influencing the productivity of this 

 stream so comparisons can be made with other waters and any future changes 

 in Sand Creek can be better understood. An intensive study is being made 

 in a 1, 600-foot section. This includes preparation of a map showing extent 

 of aquatic vegetation beds and silt deposits; study of age, growth and condition 

 of trout, their spawning areas and food habits; and collection of chemical and 

 temperature data. 



Began 1956, to close December 1957; Charles L. Sowards, Leader. 



Address inquiries to: Charles L. Sowards, as in No. 6 above. 



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