COLORADO (Cont. ) 



problems in connection with the Colorado Lake development program. State 

 funds are used to expand the program over what the Dingell- Johnson funds 

 alone will permit. Approximately 1, 000 acres of additional fishing water will 

 have been developed by the end of 1957. 



Statewide; began 1951, continuing; $200, 000; reports available. 



Address inquiries to: As in No. 1 above. 



8. Rawah-Maclntyre High Lakes Studies 



The objective of this cooperative 3-year project is to evaluate the effects 

 of fertilization on the trout populations of some Colorado mountain lakes. Six 

 lakes are intensively studied, the investigational activities including fish popu- 

 lation sampling, limnological studies, and population estimates. In the future 

 food and feeding relationships will be added to the project and will involve 

 the use of a radioactive isotope of phosphorous. 



Colorado A and M College cooperating; Roosevelt I^ational Forest, Lari- 

 mer County; began June 1956, to close October 1958; $3,000; Wesley C. Nelson, 

 Leader; reports available. 



Address inquiries to: Wesley C. Nelson, Colorado Game and Fish De- 

 partment, 1530 Sherman Street, Denver 3, Colorado. 



9. Skaguay Reservoir Studies 



Detailed information is obtained on the fish and fishermen as well as for 

 pertinent physical, biological, and ecological conditions in a fluctuating water 

 reservoir as a basis for better fish management in waters of this type. The 

 Skaguay study involves experimental plants of marked kokanee salmon and 

 rainbow trout. Growth, returns, and spawning observations are recorded. 

 All available means of sucker control are practiced and the results recorded. 

 All fishermen are checked both in and out, all fish nneasured and other per- 

 tinent data recorded Since the reservoir has only one access road an alnnost 

 100 percent creel census is obtained. 



Teller County; began May 1952, indefinite; $8, 000; Ivan I. Wescoatt, 

 Leader; reports available. 



Address inquiries to: W. D. Klein, as in No. 6 above. 



U. S. Fish and Wildlife Service, Office of River Basin Studies 



1. Creel and Economic Census 



The purpose of these studies was to determine recreational use, fishing 

 harvest, and monetary expenditures by fishermen and persons accompanying 

 them. The information will be used in the Curecanti unit and Seedskadee project 

 reports by the Fish and Wildlife Service to express an evaluation of the fishery 

 resources in the project areas. 



Data were collected by several crews each assigned to a specific reach 

 of stream or streams and in one case a reservoir was included. The survey 

 was conducted during a 3-month period of the fishing season, and each crew 

 followed a work schedule designed to make sampling uniform in respect to 

 time and space coverage. Total counts of fishermen were made and harvest 

 and economic data were gathered from personal interviews of fishermen con- 

 tacted at random in the study areas. The interviewers recorded this infor- 

 mation on standard fornns provided by the Service. 



Colorado Game and Fish Department and Wyoming Game and Fish Com- 

 mission cooperating; Curecanti unit - vicinity of Gunnison, Colorado, and 

 Seedskadee project - between Green River and LaBarge, Wyoming; began 

 June 1956, to close February 1957; $16,300; Arthur B. Eustis, Leader. 



Address inquiries to: Arthur B. Eustis, U. S. Fish ctnd Wildlife Service, 

 Building 40, Denver Federal Center, Denver 2, Colorado. 



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