The records were secured with recording thermographs, except the 

 records from Battle Creek near its mouth and Sacramento River near the 

 Sacramento Water Works. For Battle Creek^ morning and afternoon hand 

 thermometer records are given; for the Sacramento Water Works, hand 

 thermometer readings taken at 7 aomo are given. Thermograph records 

 are listed as daily maximum and minimum readings to the nearest one 

 degree Fahrenheit. Monthly mean values are given at the bottom of each 

 column. In the field^ thermograohs were calibrated once a week. 



Present or former Fish and Wildlife Service members who contributed 

 to these records by sei-vicing instruments, tabulating data, or in other 

 ways, are Melvyn K. Bowers, Louis H, Carufel, Jr., Frederick Ko Cramer, 

 Eugene S. Cuoernell, William Ho Davenport, Leo F. Erkkila, Kenneth L. 

 Liscom, James Miggins, Daniel W. Slater, Bernard R. Smith, and James R, 

 Thrailkill. Ray W. Jones of the City of Sacramento Division of Water and 

 Sewers kindly supplied records from his files, Dr, Hubert 0. Jenkins of 

 Sacramento State College supervised the maintenance of a thermograph on 

 Sacramento Riverj he was assisted by Jack Criqui, Phillip Cuccia, 

 M. Delfendahl, and Howard Noy. 



References 



COPE, 0. 



19li9« VJater temperature records from California's Central Valley, 

 1939-19hS. U. S. Fish and Wildlife Service, Special Scien- 

 tific Rei:)ort: Fisheries Noo 2. 



ERKKILA, L. F., J. W. MOFFETT, 0. B. COPE, B. R. SFjITH, and R. S„ NIELSOM. 

 19^0. Sacramento - San Joaquin Delta fishery resources: Effects of 

 Tracy Pumping Plant and Delta Cross Channel. U. S. Fish and 

 Wildlife Service. Special Scientific Report: Fisheries No. $6, 



