THE FLOW OF WATER IN IRKIGATIOISr CHANNELS. 



5T 



V= Velocity in feef pers^econd. 



Fkj. «. -Churt for use in tltmlnninn rouKh mu-wnry, rfiugli-couted concrcto, or oiirtli chiinnols. From 

 IntpTMWtlon of U uii'l n follow giildo linos to Intorsoct Ion of 8 und V. 



