IRRIGATION 



261 



Usually there are depressions to he filled or slight elevations to 

 he removed. The ohject is not to level the land, but to reduce 



. 117. 



Fio. 118. 

 Fin. 117. Desert lands and Homestead, Iluntloy Trojort, Montana. (U. S. Rrrlnmntion 



Service.) 



Fio. 118. Wheat firl.l, Minidoka Projcrt. Malio. Yield 00 bushels per acre. (U. S. 



Kerlamation Service ) 



it to a uniform slopo so that water will spread over i( uniformlv 

 (I-V IIS). 



Character of Water Used for Irrigation. In humid regions 



