Ch. 23] 



CORRECTIVE TREATMENT FOR GULLIES 



429 



Fig. 7(a). Bank protection along Chinle 



Wash. Many Farms area near Chinle, 



Arizona. Ground water is within a few 



feet of the surface. 



Fig. 7(b). Vigorous growth of cotton- 

 wood trees and willows form bank pro- 

 tection in Keams Canyon gully, Navajo 

 Indian Reservation, near Keams Can- 

 yon, Arizona. Gully is 50 feet deep. 

 Stream is perennial in this reach. 



Fig. 7(c). Deposition induced by tetra- 

 hedrons with willows and other types of 

 shrubs. Chinle Wash near Chinle, Ari- 

 zona. 



