104  FISH AND GAME COMMISSION 



The Frog Lake (Nevada County) Fishery in 1948. Submitted March 7, 1949. 

 5 pp., 5 tables. 



Abstract : Discusses and summarizes the 1948 catch returns from this test 

 lake. Catch records for 1938 through 1949 are tabulated. Practically negligible 

 returns of a marked plant of 15,000 rainbow (2.5-13.0 per ounce) made in 1947 

 is discussed. 



A Report on the Emigrant Basin Flow Maintenance and Stream Improvement 

 Program (Wildlife Conservation Board Project No. 16). Submitted March 18, 1949. 

 74 pp., 16 sketch maps. 



Abstract : Describes, discusses and evaluates the nineteen individual retain- 

 ing and check dam projects within the program. Lists additional information needed 

 for some of the projects. Sketch maps of the project area are given for 16 of the 

 projects. No cost estimates are given. 



Report on Proposed Power Projects, Middle Fork Stanislaus River, Tuolumne 

 County. Submitted September 28, 1949. 15 pp., 7 figures, 4 tables. 



Abstract : Gives description, present status, or probable effects on the fish- 

 eries of the proposed Beardsley and Donnells Dam projects on the Middle Fork 

 Stanislaus River, Tuolumne County, applied for under Federal Power Commission 

 Project Nos. 2005 and 2018 by the Oakdale and South San Joaquin Irrigation 

 Districts. Recommendations for protection of the fisheries to be affected are given. 



German, Eugene R. 



Creel Census at McCloud River Mouth, Shasta County, May 1, 1949. Sub- 

 mitted May 15, 1949. 6 pp., including 3 tables. 



Abstract : The fifth annual creel census at the mouth of the McCloud River 

 was conducted on May 1, 1949. Of 61 anglers, 11 fished the river and took 36 trout 

 (mostly small rainbow), while 50 fished Shasta Lake and took 58 trout (larger 

 rainbow, brown and Dolly Varden). There were more dollies than in other years. 

 Angling was better than in 1948. 



Aerial Fish Planting in District No. 1. Submitted October 31, 1949. 12 pp., 

 including 2 tables. 



Abstract : Describes first full scale aerial fish plants and problems involved. 

 Rough figures show planting costs per fingerling to be $0,004 by air and $0.02 by 

 pack stock. 



Creel Census at McCloud River Mouth, Shasta County, April 29, 1950. Sub- 

 mitted June 15, 1950. 3 pp., including 1 table. 



Abstract : The sixth annual creel census at the mouth of the McCloud River, 

 on Shasta Lake, was made on April 29, 19.10. 85 of 41 anglers fished the lake itself. 

 Catch per hour from shore was .41 and by boat was .14. No fish over 14 inches were 

 taken, but fish were in excellent condition. The catch consisted mainly of rainbow, 

 only 2 Dolly Varden being taken. 



Handley, John G. 



Progress Report on a New Type of Fish Screen Tested in Trinity County. 

 Submitted November 14, 1949. 9 pp., including 6 figures. 



Abstract: The history of the bar and rotary type fish screens is told In-icOy. 

 The new perforated plate fish screen is described and its advantages given. Note is 

 made of the importance of the by-pass flow. The tests made by Handley and Coots 

 on the perforated plate screen on the Jim I^ee Ditch, Trinity County, are described. 

 These tests sliowed that during the 1949 irrigation season approximately 8,280 

 steelhead and salmon fingerlings were stopped by the screen, diverted through the 

 by-pass opening, and carried back to the river. 



Hanson, Harry A., and H. P. Chandler 



Dispersing Rotenonc at Mori-is Lake, Plumas County, California. Submitted 

 February 10, 1949. 5 pp., including 1 map, 1 sketch of equipment and 1 photo of 

 operation. 



Abs'J'RACt : Report ol' mi'tiind used In disperse 1,000 pounds cube root powder 

 (4.9 percent rotenone content) in a forty-acre lake having a volume of approxi- 

 mately 750 acre-feet. Apparatus used : Two 10-foot light metal row boats, one used 

 as a towboat and the other as .'1 barge. Mixing was done in a 60-gallun oak barrel by 

 means of a 2i h.p. Lauson air-cooled outlmard motor. Dispersion was by gravity 

 through two one-inch garden hoses of 8- and 20-foot lengths. Rate of dispersion was 

 about 200 pounds of powder per hour by two men. Suggested improvements in the 

 mothofl included l)y tlie authors. 



