48 



FISH AM) CA.Mi; COMMISSION 



State; and as its water will be drawn from salmon streams, a screen has 

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

 numbers of striped bass and otlier s])eeies of fisli. Bids liave already been 

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

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

 three years of pump opei-ation. The pilot screen will contain several 

 types of debris-eleaiiing 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 eonstruction 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 equipped with 

 power tools will greatly increase the efficiency of the personnel working 

 ill 1 his area. This installation was constructed with funds provided by the 

 W i I (1 1 if e Conservation Board. 



As part of an interstate investigation involving California, Wash- 

 iii<itoii. and Oi-cgon, the Bni'eau of Marine Fisheries has started tagging 

 .salmon in the ocean. Taggei's have been working out of San Francisco, 

 Fort Bragg, and I*>iircka. In addition, the bureau has tagged salmon in 

 the Sacraiiiciito-Saii .loa(|uiii Pclla as part of an investigation which is 

 iiiiciiniiiM-tc(l with the Pacific Marine Fisheries Commission. 



TABLE 6. NUMBERS OF SALMON TAGGED 



The nniiihers (if (ish tagged are shown in Table 6. 



.\n innovation in lagging methods, tried for the first time in 1949, 

 was nioder;itely siiccessl'iil. and was tried again in IDoO. The second time 

 it was an ovcrw lielinin^- success. Sport lisiiinu boats operating out of 

 San l-'raiieisco \',ny were contaidcd liefore the salmon season opened. 

 Arran-i'inents were made with 1.') boats to donate theii' time and catch 

 sainioii for tagging before the sejison was open. This included 31 charter 

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

 boat's ski]>|)er contacted some ,,\' his best cnstomers and asked them if 



