portion of the Sacramento-San Joaquin Delta are also considered in this 

 study, the southernmost locality being; at Mossdale, on San Joaquin River c 

 The location of the temperature recording stations is shown in Figure I, 



ACKNOWLEDGMENT 



The information in this compilation has been brought together from 

 several sources. Most of the data represents the results of efforts of 

 many Fish and Wildlife Service personnel, while various other segments 

 of the collection have been added through the cooperation of the 

 California Division of Fish and Game, the U. S. Bureau of Reclamation, 

 and the City of Sacramento. Credit is given these cooperating agencies 

 on those tables which each contributed. 



Among Fish and Wildlife Service personnel, Leo F. Erkkila and 

 Frederiok K. Cramer have been particularly active in the field program. 

 Other biologists, who deserve credit for the operation of thermographs, 

 are: Millard H. Coots, William H. Davenport, David H. Hammack, Harry 

 A. Hanson, Kenneth Legg, Norman W. Mattoon, James W. Moffett, Lewis P. 

 Parker, Bernhard R. Smith, Stanford H. Smith, and Charles B. Wade. 

 Various men of the 1939 and 1940 Shasta survey parties collected tem- 

 perature data, some of which aopear in the tables. 



REFERENCES 



Hanson, H. A., 0. R. Smith, and P. R. Needham 



1940. An investigation of fish-salvage problems in relation to 



Shasta Dam. II. S. Bureau of Fisheries, Special Soientifio 

 Report No. 10. 



Moffett, J. W. and S. H. Smith 



1949. Biological investigations of the fishery resources of Trinity 

 River, California. Mimeographed report, U. S. Fish and 

 Wildlife Servioe. 



Needham, P. R., H. A. Hanson, and L. P. Parker 



1943. Supplementary report on investigations of fish-salvage problems 

 in relation to Shasta Dam. U. S. Fish and Wildlife Service, 

 Special Scientific Report No. 26. 



