212 



Irrigation and Drainage 



Amount of water used in irrigation in different countries 



Name of country No. of acres per sec.-ft. No. of inches per 10 days 



60 to 150 3.967 to 1.587 



65 to 70 3.661 to 3.4 



80 to 120 2.975 to 1.983 



60 to 120 3.967 to 1.983 



80 to 100 2.975 to 2.38 



70 to 90 3.4 to 2.644 



60 to 80 3.967 to 2.975 



60 to 80 3.967 to 2.975 



100 to 150 2.38 to 1.587 



100 to 150 2.38 to 1.587 



150 to 300 1.587 to .793 



Northern India . . 



Italy 



Colorado 



Utah 



Montana 



Wyoming 



Idaho 



New Mexico .... 

 Southern Arizona . 

 San Joaquin Valley 

 Southern California 



E. Perels* tabulates the duty of water in Algeria 



as follows : 



Water required for irrigation in Algeria 

 ' Water used * 



From another general table giving the duty of 

 water in different countries, by Flynn,t the results 

 which follow are derived: 



*Landwirthschaftlicher Wasserbau, zweite Auflage, p. 502. 

 t Irrigation Canals and Hydraulic Engineering, p. 293. 



