UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 339 



Contribution from the Office of Public Roads and Rural Engineering 

 LOGAN WALLER PAGE, Director 



Washington, D. C. 



PROFESSIONAL PAPER 



April 21, 1916 



EXPERIMENTS ON THE ECONOMICAL 



USE OF IRRIGATION WATER 



IN IDAHO 



By 



DON H. BARK, Irrigation Engineer, Division of 

 Irrigation Investigations 



CONTENTS 



Page 



Introduction 1 



Plan of Investigation 2 



Weather Conditions in Idaho During the 



Investigation 6 



Results Obtained During 1910, 1911, 



1912, and 1913 9 



Page 

 Measurement of Water Used on Farms 

 and Under Complete Canal Systems . 43 



Seepage Investigation 47 



Survey of Waste Land in Idaho .... 52 

 Proper Duty of Water for Idaho .... 56 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1916 



