28 BULLETIN 1017, U. S. DEPARTMENT OF AGRICULTURE. 
SOUTH DAKOTA 
Fig. 7. — Precipitation on watershed of Red River of the North during 12 months com- 
prising January to June, 1916, and July to December, 1909. 
"MINNESOTA 
f MWahpeton' 
r 
SOUTH DAKOTA ^p-^-y" 
Fig. S. — Mean annual precipitation on watershed of Red River of the North. 
