WASHINGTON (Cont. ) 



8. Blue Lake Dike and Screen. (FA: F-17-D)* 



Blue Lake was rehabilitated in November 1952. Trout stocked have been ob- 

 served leaving the lake by way of the outlet which runs into Alkali Lake, a non- 

 trout lake. The State is installing a revolving screen to prevent further loss. 

 Sonne diking will be done, but the lake level will not be affected. A short power 

 line is to be installed. 



Near Coulee City; began November 1953, to close Novennber 1954; $9,963; 

 Roy A. Banner, Leader. 



Address inquiries to: Clarence F. Pautzke, as in No. 1 above. 



9. The Effects of Various Types of Fisheries on the Return of Marked Artificially 

 Reared Downstream Migrant Steelhead. 



Objective is to determine what percentage return may be obtained under 

 varying conditions on hatchery reared steelhead fingerling. The information 

 will be applicable to all coastal waters. The program is set up to deternnine 

 the effect of sport fishing on downstream migrants and the effect of sports, com- 

 mercial, and one or more dams on downstream and upstream migrant steelhead. 



Columbia River and coastal waters of Washington; began 1947, indefinite; 

 $21, 000. 



Address inquiries to: Clarence F. Pautzke, as in No. 1 above. 



10. Growth Rates and Stocking Experiments on Spiny-rayed Fish. 



A continuation of the life history work on various members of the spiny-rayed 

 family, the rate of growth of perch, large and smallmouth bass, crappiff, and 

 bluegills in the different waters of the State. By using salvaged fish of the above 

 species which have been tagged a determination is being made of the rate of growth 

 of these transplanted fish plus their survival. 



Statewide; began 1951, indefinite; $6,000. 



Address inquiries to: Merrill H. Spence, Washington Department of Game, 

 Route 3, Box 1026, Puyallup, Wash. 



11. The Effect of Predatory Birds on Pure Trout Populations During the Winter 

 Months. 



The objective is to determine the degree of predation of merganser ducks on 

 lowland lakes of western Washington during the winter months. Concentrations of 

 over 2, 000 of these birds have been observed on one body of water. 



U. S. Fish and Wildlife Service cooperating; Lowland lakes of western Wash- 

 ington; began January 1, 1954, to close April 1954; $1,200. 



Address inquiries to: Harry Senn, Washington Department of Game, 18046 

 Third Street Northeast, Seattle, Wash. 



12. Returns of Trout Planted in Mixed-Species and One-Species Lakes. 



The objective is to determine the returns of different sized trout planted into 

 lakes inhabited by different species of warm-water fish and undesirable fish in 

 comparison with trout planted into rehabilitated lakes. 



Eastern Washington; began 1948, indefinite; $4,000. 



Address inquiries to: Don Earnest, Washington Department of Game, North 

 520 Walnut Road, Dishnxan Branch, Spokane 63, Wash. 



Department of Fisheries 



1. Estimate of Sport Catch of Salmon. 



The objective of the project is to obtain reasonable estimation of sport exploi- 

 tation. Number of boats fishing daily is recorded. Average catch per day by 

 species is recorded. The study was conducted between Megler, Washington, and 



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