Bui. 339, U. S. Dept. of Agriculture. 



Plate I. 







1— ' 



'«• Ml 



/ 



I 



/S 



r<'fc 







i 



■** 



Fig. 1.— Upstream View of Cipolletti Weir Used in the Idaho Investigation. 



Fig. 2.— Downstream View of Cipolletti Weir Used in Idaho Investigation, 

 Showing Method of Measuring. 



