4 BULLETIlsr 398, U. S. DEPARTMENT OF AGEICULTURE. 



Table II. — Monthly, seasonal, and annual precijntation (in inches) in the vicinity of 

 Moccasin, Mont., during the 18 years from 1898 to 1915, inclusive} 



[Data from the records of the United States Weather Bureau and of the Biophysical Laboratory of the 



Bureau of Plant Industry.] 



Year. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Sea- 

 sonal. 



Total. 



1898 



0.70 

 1.69 

 .45 

 .40 

 .14 

 .50 

 .18 

 .19 

 .55 

 1.34 

 .55 

 .90 

 .09 

 .58 

 .88 

 .89 

 .47 

 .76 



0.27 

 .38 

 .35 

 .20 

 .24 

 .24 

 .22 

 .16 

 .63 

 .08 

 .49 

 .08 

 .74 

 .55 

 .60 

 .09 



1.35 

 .08 



1.91 

 .92 

 .21 

 .57 

 .45 



1.11 

 .79 

 .62 

 .43 

 .61 

 .98 



1.22 

 .10 

 .54 

 .81 

 .20 



1.12 



2.69 



1.12 



2.29 



2.85 



1.65 



1.12 



2.29 



1.14 



.75 



.16 



.43 



.61 



1.03 



1.31 



1.66 



1.43 



.79 



1.19 



1.43 



5.87 

 3.33 

 1.04 

 3.82 

 1.41 

 1.82 

 1.94 

 1.97 

 2.61 

 3.21 

 7.31 

 1.34 

 2.40 

 2.98 

 3.94 

 2.64 

 2.91 

 2.12 



5.80 

 1.22 



.44 

 3.97 

 3.28 

 2.81 

 1.73 

 2.82 

 2.66 

 6.75 

 2.45 

 5.97 

 1.69 

 2.55 



.64 

 4.77 

 4.64 

 3.97 



3.16 

 2.57 



.70 

 1.97 

 1.84 

 2.57 

 3.25 

 3.19 



.93 

 3.51 



.20 

 2.54 

 1.10 



.50 

 1.92 

 1.12 



.64 

 3.54 



0.67 



1.31 



2.20 



.90 



.67 



.81 



.42 



.27 



2.00 



1.47 



1.18 



4.21 



2.02 



6.34 



1.27 



.51 



.65 



.92 



0.47 



.28 



.82 



2.42 



.32 



2.42 



.12 



.83 



.99 



.73 



1.41 



4.47 



2.54 



1.37 



1.63 



1.01 



1.11 



2.65 



1.25 



1.15 



.86 



1.39 



.18 



.05 



.54 



.39 



.70 



.20 



6.27 



.49 



1.36 



1.94 



1.68 



1.63 



.74 



.85 



1.14 

 .11 

 .29 



2 ip 



2.04 

 .44 

 .50 

 .50 

 .42 

 T 

 T 

 .30 



1.26 



1.76 

 .14 

 .93 

 .64 



1.01 



0.59 

 .88 

 .21 



3.22 

 .25 

 .65 

 .24 

 T 

 .68 

 T 

 .22 



1.21 

 .48 

 .68 

 .06 

 .38 

 .21 

 .66 



15. 95 

 9.41 

 5.03 

 11.41 

 7.65 

 9.49 

 8.06 

 8.73 

 6.56 

 13.90 

 10.57 

 10.88 

 6.50 

 7.69 

 7.93 

 9.32 

 9.38 

 11.06 



22.95 



1899 



16 13 



1900 



10 42 



1901 



20.51 



1902 



11 94 



1903 



15.71 



1904 



11 07 



1905 



11.69 



1906 



12 76 



1907 



18.33 



1908 



21 67 



1909 



23.76 



1910 



15.09 



1911 



21.45 



1912 



15. 00 



1913 . . 



14.96 



1914 



15.67 



1915 



20.68 







Average 



Maximum . . 

 Minitnura . . . 



' .62 

 1.69 

 .09 



.38 



1.35 



.08 



.85 



2.69 



.10 



1.29 



2.85 



.16 



2.93 

 7.31 

 1.04 



3.23 



6.75 



.44 



1.96 



3.54 



.20 



1.55 



6.34 



.27 



1.42 



4.47 



.12 



1.20 



6.27 



.05 



.64 



2.04 



T 



.59 



3.22 



T 



9.41 

 15.95 

 5.03 



16.66 

 23.76 

 10.42 



1 Precipitation records previous to 1909 were taken at Utica, Mont., 7 miles southwest of the substation; 

 in 1909 and since they were taken at the station. 

 2T=trace. 



Table III gives the average monthly, annual, and seasonal pre- 

 cipitation at the Judith Basin substation in the nine years from 1907 

 to 1915, inclusive, the years during which experiments have been 

 conducted at Moccasin. This table has been compiled from the 



ss^ 



Fig. 1. — Diagram showing the annual and seasonal precipitation, ia inches, at the Judith Basin substa- 

 tion, Moccasin, Mont., for nine years, 1907 to 1915, inclusive. Solid bars show the seasonal precipita- 

 tion, while the total length of the bars shows the annual precipitation. 



monthly and annual records given m Table II. The data for 1907 

 and 1908 are from the Weather Bureau records taken at Utica, 7 

 miles southwest of the station. The data for the remaining years 

 are from the records of the Biophysical Laboratory of the Bureau 

 of Plant Industry, taken at Moccasin. Figure 1 presents this data 

 for each year in graphic form. 



