BULLETIN 836, U. S. DEPARTMENT OF AGEICULTLEE. 



Table I.- — Monthly and annual precipitation at Woodicard, OMa., during the 

 11-year period from 1908 to 1918, inclusive. 



[Data (in inches) furnished by the observer of the United States Weather Bureau at Woodward.] 



Year. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



An- 

 nual. 



Mean. 



1908 



0.25 



1.25 



1.10 



1.70 



3.25 



3.76 



5.87 



1.S2 



4.30 



2.75 



1.47 







27.52 





1909 



.05 



.28 



.66 



.45 



4.78 



2.45 



1.54 



.29 



4.88 



2.95 



9.54 



.15 



28.02 



27.77 



1910 



.46 



.22 







1.97 



.53 



1.17 



1.62 



7.65 







.38 







.01 



14.01 



23.18 



1911 







8.09 







.10 



4.13 







3.54 



5.29 



.41 



.82 



.52 



2.90 



25.80 



23.84 



1912 



.03 



2.58 



2.37 



1.63 



1.15 



3.02 



3.25 



2.90 



3.44 



.50 



.05 



.07 



21.00 



23.27 



1913 



.40 



Z44 



.54 



1.11 



2.08 



5.31 



.99 



1.87 



4.89 



1.05 



3.50 



2.73 



26.91 



23. S8 



1914 



.18 



.51 



.34 



2.44 



3.53 



.60 



.92 



2.92 



.82 



1.99 



.05 



. 77 



15.08 



22.62 



1915 



1.17 



3.44 



1.45 



7.08 



6.47 



2.87 



3.46 



3.90 



6.27 



2.52 



. 03 



.02 



39.21 



24.69 



1916 



1.29 



.03 



.92 



2.01 



1.74 



1.64 







1.15 



2.22 



1.87 



.95 



.38 



24.20 



24.64 



1917 



.43 



.22 



.34 



1.93 



1.39 



1.89 



1.33 



7.00 



1.90 







.77 



.18 



17.38 



23.91 



1918 



1.60 



.22 



1.85 



2.51 



4.49 



2.11 



1.79 



.70 



1.26 



3.54 



1.73 



3.58 



25.38 



24.04 



Average. . . 



.53 



1.75 



.87 



2.08 



3.05 



3.17 



2.21 



3.23 



2.76 



1.67 



1.74 



.98 



24.04 





DISTRIBUTION OF MONTHLY KAINFALL. 



The total annual and seasonal precipitation, which is shown 

 graphically in figure 2, may easily be misleading. This is due to 



^ ^ \ \ t 



s5&?S&WZ 



SZ&S&/U&: 



SZ&S0AZZ 



Fig. 2. — Diagram showing the annual and seasonal precipitation (April to September) 

 and the average precipitation (in inches) at Woodward, Okla., in the 5-year period 

 from 1914 to 1918, inclusive. 



the irregular distribution of summer rainfall, to the varying quanti- 

 ties deposited by different showers, and to the manner in which it 



