Bui. 376, U. S. Dept of Agriculture. 



Plate IV. 



Fig. 1.— Cowiche Siphon (No. 42), Yakima 

 Valley Canal Co., Washington. 



Fig. 2.— Main Line, Pasco Reclama- 

 tion Co., V/ashington (No. 37). 

 Typical Alignment and Profile. 



FiQ. 3.— Trunk Line, Mohawk Hydro-Electric. Co., New York (No. 50). Typical 

 Alignment and Profile. 



