WYOMING (Cont.) 



11. Fish Tagging and Marking Programs (13-FR-6). 



Using several different species of fish retained under identical conditions the com- 

 parative merits of various types of tags and other methods of marking fish are 

 being determined. Ten thousand, four hundred and ninety fish were tagged in 

 1952 and placed where follow-up observations could be made. 



Statewide; began January 1, 1951, continuing. 



Address correspondence to: A. F. C. Greene, State Fish Warden, Wyoming Game 

 and Fish Commission, Cheyenne, Wyoming. 



12. Beaver -Trout Relationship Studies (27-FR-6). 



This program was established to determine beaver-trout relationships at various 



times of the year. Water depths, temperatures, ice and snow depths are recorded 

 along with the chemical, physical and biological conditions of the ponds. Avail- 

 ability of fish foods, species present, and abundance are also recorded. Utiliza- 

 tion of various habitats is noted. 



Pole Creek, Johnson County; began November 14, 1950, to close in 1953; $700. 

 Address correspondence to: A. F. C. Greene, State Fish Warden, Wyoming Game 

 and Fish Commission, Cheyenne, Wyo. 



13. Lake DeSmet Investigations (29-FRD-2). 



The objectives of this project are to determine fish production and activity; to dis- 

 cover the effects of the limnological and environnnental factors on the fish popula- 

 tions in the lake; and to improve conditions in the lake which will in turn make for 

 improved fish and fishing conditions. 



Johnson County; began in the winter of 1950, to close March 31, 1955; $2,000; Louis S. 



Pechacek, Fisheries Biologist. 

 Address correspondence to: A. F, C. Greene, State Fish Warden, Wyoming Game 



and Fish Comnnission, Cheyenne, Wyo. 



14. Chugwater Creek Investigations (30-FRD-3). 



The determination of annual trends in abundance of brown trout by population esti- 

 mates on a 1-mile section of stream is being made. The life history of the trout 

 in a stream of low gradient, meandering type is being recorded. Facts of age, 

 growth and survival as determined from marked, wild fish will be secured and 

 the value of various stream improvements devices used will be established. 



Platte County; began Nov. 1950, planned for 4 years; $6,000; Jack J. Kanaly, 



Fisheries Mgt. Biologist. 

 Address correspondence to: A. F.C. Greene, State Fish Warden, Wyoming Game 



and Fish Comnnission, Cheyenne, Wyo. 



126 



