LETTER OF TRANSMITTAL 



Mr. Edward Hyatt, 

 State Engineer, 

 Sacramento, California. 



Dear Sir : I have the pleasure to transmit herewith for publication a 

 report ' ' Consumptive Use of Water by Native Plants Growing in Moist 

 Areas in Southern California." 



The report was prepared by Harry P. Blaney, assisted by Colin A. 

 Taylor, A. A. Young and Harry G. Nickle, and is, I believe, one of the 

 most comprehensive presentations of research data available dealing 

 witli the consumptive use of water by various uoncrop plants native of 

 southern California and the Southwest in general. It is of economic 

 and practical importance in considering problems of water conser- 

 vation and use. 



As a final chapter there is brought together data on evaporation 

 from a free-water surface, that will be of great value to engineers and 

 others dealing with water utilization, especially its storage in open 

 reservoirs. 



The investigations on which tlie report is based were siip|)orted by 

 and the report was prepared under cooperative agreement between the 

 Division of Water Resources of the California State Department of 

 Public Works and the Division of Irrigation of the P>ureau of Agricul- 

 tural Engineering, U. S. Department of Agriculture. 



Respectfully submitted, 



Berkeley, California, 

 June 3, 1933. 



Chief, Division of Irrigation, 

 Bureau of Agricultural Engineering, 

 U. S. Department of Agriculture. 



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