48 



FISH AND GAME COMMISSION 



State ; and as it.s water will be drawn from salmon streams, a screen has 

 been considered necessary. This installation is also expected to save large 

 numbers of striped bass and other species of fish. Bids have already been 

 received for a pilot screen 200 feet lonp- to be located in a temporary chan- 

 nel. This structure will be adeiiuate for the diversion capacity of the first 

 three years of pump operation. The pilot screen wall contain several 

 types of debris-cleaning- mechanisms and should give the information 

 necessary for the designing of an effective permanent installation. Dur- 

 ing the life of the pilot screen it is planned to transport the small fish out 

 of the danger area by barge. 



The construction of a building at Elk Grove has supplied a much 

 needed headquarters and shop for the men working on stream improve- 

 ment in the Central Valley. This shop when finished and eciuipped with 

 power tools will greatly increase the efficiency of the personnel working 

 in this area. This installation was constructed with funds provided by the 

 Wildlife Conservation Board. 



As part of an interstate investigation involving California, Wash- 

 ington, and Oregon, the Bureau of Marine Fisheries has started tagging 

 salmon in the ocean. Taggers have been working out of San Francisco, 

 Fort Bragg, and Eureka. In addition, the bureau has tagged salmon in 

 the Sacramento-San Joacjuin Delta as part of an investigation which is 

 unconnected with the Pacific Marine Fisheries Commission. 



TABLE 6. NUMBERS OF SALMON TAGGED 



The numbers of fish tagged are shown in Table 6. 



An innovation in tagging methods, tried for the first time in 1949, 

 was moderately successful, and was tried again in 1950. The second time 

 it was an overwhelming success. Sport fishing boats operating out of 

 San Francisco Bay were contacted before the salmon season opened. 

 Arrangements were made with 15 boats to donate their time and catch 

 salmon for tagging before the season was open. This included 11 charter 

 boats, three private boats, and one commercial troller. Each charter 

 boat's .skipper contacted some of his best customers and asked them if 



