. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. FORTY-FOURTH BIENNIAL REPORT 31. At left department personnel and members release /nc ount and measure marked steelhead at Coleman Hatchery. Yearling steelhead are of Kamloops, d (right) alter marking into the Sacramento River at Princeton Ferry. (Fish and Game Photos by Don LaFaunce) were found either in the diversions or in Butte Creek in the spring of 1956. This work will be continued in 1957. Considerable losses of adult salmon we
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. FORTY-FOURTH BIENNIAL REPORT 31. At left department personnel and members release /nc ount and measure marked steelhead at Coleman Hatchery. Yearling steelhead are of Kamloops, d (right) alter marking into the Sacramento River at Princeton Ferry. (Fish and Game Photos by Don LaFaunce) were found either in the diversions or in Butte Creek in the spring of 1956. This work will be continued in 1957. Considerable losses of adult salmon were observed in diversions from Butte Creek in the spring of 1956, and recommendations for elimination of tiiese losses were made. Some of the answers to fish screening problems have been found, but many problems still remain, and the department is working toward solu- tions. Evaluation of Steelhead Planting Since completion of Shasta Dam, the Sacramento River has become excellent habitat for steelhead trout. Releases from the dam have lowered river tempera- tures to a level ideal for steelhead. Many fishermen no\\ travel considerable distances each fall to fish the upper Sacramento. Creel censuses indicate that at least 10 percent of the anglers are from Los Angeles County. Questions of \\ hether present regulations are adequate to maintain the excellent fishing, in view of ever-increasing fishing pressure, and whether it is economical!)' feasible to maintain or even improve the fishing by planting yearling hatchery-reared fish, are being studied. Knights Landing Project To answer these questions, the department is mark- ing and planting hatchery-reared steelhead in the upper Sacramento River. This work is supplemented by an adult steelhead trapping and tagging program in the lower river near Knights Landing each fall and winter, coupled with an examination of adult steel- head upstream from the trapping site. These fish are examined at the project's counting station on Mill C
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