Bul. 832, U. S. Dept. of Agriculture. PLATE XIII. 
B. P, R.—DI203 
Fic. |.—SLOPE COURSE OF WILLOW CREEK DREDGED CHANNEL, NEAR MISsouURI 
VALLEY, IOWA, I9I7. (SEE TABLE NO. 4.) 
B. P. R.—D1200 
Fig. 2.—SLOPE COURSE OF BOYER RIVER DREDGED GHANNEL, NEAR MISSOURI 
VALLEY, IOWA, I9I7. (SEE TABLE No. 4.) 
