. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. FORTY-THIRD BIENNIAL REPORT 39 sturgeon are once again abundant enough to support a fishery. These fish have been heavily protected since 1917. On the basis of departmental recommendations the Fish and Game Commission adopted an open sea- son on sturgeon angling for 1954. Sacramento-San Joaquin River Salmon and Steelhead Study This important federal aid project (F-7-R), begun during the biennium, is presently aimed toward two importan
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. FORTY-THIRD BIENNIAL REPORT 39 sturgeon are once again abundant enough to support a fishery. These fish have been heavily protected since 1917. On the basis of departmental recommendations the Fish and Game Commission adopted an open sea- son on sturgeon angling for 1954. Sacramento-San Joaquin River Salmon and Steelhead Study This important federal aid project (F-7-R), begun during the biennium, is presently aimed toward two important objectives. The first is an evaluation of the anadromous fish losses occurring at the numerous water diversions in the Central \^alley. Second is the derivation of a sound and practical management plan for the steelhead trout of the Sacramento River. Valu- able data are also being gathered on king salmon, as a service to the Marine Fisheries Branch. Work on the diversions has thus far been confined chiefly to the 246-mile section of the Sacramento River between the Cities of Redding and Sacramento, in which there are more than 300 points of diversion. All but one are pumping diversions, consisting of from 1 to 13 pumps and ranging in capacity from less than one to more than 2,300 cubic feet per second. During the 1953 irrigating season initial surveys were made of each pump. Included was all the basic information on factors believed to influence fish losses, such as periods of operation, depth and position of intake, size and type of pump, etc. Notes were also made on whether or not the pump could be effectively tested for fish losses. Preliminary sampling was also done at several diversions. With this phase of the work completed, several rep- resentative pumps are being tested with fyke nets through the 1954 irrigating season. Nets are placed in discharge outlets of the pumps. At the end of the sea- son reasonable accurate estimates may be made of total numbers and species
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