Bul. 1358, U. S. Dept. of Agriculture PLATE XVI 
Fi71940 
Fic. |.—OVERGRAZED SLOPES AND CHANNELS ABOVE RESERVOIRS AND 
DRAINAGES OF STEEP GRADIENT RESULT IN HEAVY SILTING AND EXPENSIVE 
UPKEEP : 
Such destructive overgrazing as this should never be allowed 
F172796 
Fig. 2.—A THICK, VIGOROUS GROWTH OF VEGETATION IN CHANNELS ABOVE 
RESERVOIRS DECIDEDLY REDUCES SILTING 
This can be secured only by proper grazing use. The most practicable protection seems to be 
the fencing of about one-half mile of the channel in a small, rigidly controlled pasture 
