Location 



Table 11.— Diurnal temperature variations F. 



Typical values prepared fron U. S. Fish and Wildlife Service, 



Chelan County Public Utility District, Puget Sound Power and 



Light Company, and Washington Pollution Control Commission records. 



Maximum and minimum monthly diurnal temperature differences. 

 Where maximum value only is given, this is the monthly variation. 



January February March April May June 

 Max. Mln. Max. Min. Max. Min. Max. Mln. Max. Min. Max. Min, 



Colxanbla River 

 Inter" 1 Bdiy. 

 Elmer City 

 Bridgeport 

 Rock Island 

 Priest Rapids 

 Pasco 

 Umatilla 

 Dalles 

 Bonneville 



Spokane River 

 Little Falls 



Okanogan River 

 Oro villa 



Viienatchee River 



Takima River 



-- ----1020 



20 2030I1IUO 

 3 



10 2 0202111 



-- _-----l- 



10 10101010 



-- ---.--101 



1 

 1 

 1 

 1 



2 



3 



1 

 1 

 1 





 



Donald -- ---._--- .. 



Chandler -- «-_»---« _- 



Richland -- __.----- 51 



Snake R. Mouth -- -._----- 30 



Deschutes R. Mouth -- __-_---- U- 



56 



