6 



BULLETIN 30, U. S. DEPARTMENT OP AGRICULTURE. 



to take the place of the "bluegrass." In 1903, when the substation 

 was established, the entire ridge was covered with sagebrush (Artemisia 

 tridentata). (Fig. 4.) 



RAINFALL. 



Table I contains a record of the annual precipitation in the Juab 

 Valley by months for the years 1898 to 1912, inclusive. Previous to 

 1904 the record was kept at Levan, 6 miles south of the substation, 

 by a cooperative observer of the United States Weather Bureau. 

 Since 1904 the record has been kept at the substation. The average 

 annual precipitation near or at the Nephi substation for the past 15 

 years has been 13.6 inches. 



Table I. — Monthly and annual precipitation (in inthes) in the Juab Valley, Utah, 1898 

 to. 1912, with the average, maximum,, and minimum for each month. 



Year, etc. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Total. 



1898 



0.80 



1.43 

 .87 

 .93 

 .53 



1.64 

 .68 

 .28 



1.48 



1.90 

 .81 



2.57 

 .61 



1.92 

 .39 



0.25 



2.25 



.70 



2.23 



,1.41 



.98 



1.44 



2.22 



.68 



2.01 



1.11 



1.70 



.61 



.61 



.29 



1.45 

 3.96 



.12 

 1.88 

 2.41 

 1.33 

 2.41 

 1.57 

 3.83 

 1.42 

 1.12 

 1.03 



.81 

 1.05 

 2.80 



1.06 



.71 



3.70 



1.02 



1.20 



2.03 



.80 



1.22 



2. 87 



.93 



.29 



2.21 



!46 



.56 



1.47 



5.57 

 1.75 



.57 

 1.74 



.16 

 2.26 

 3.10 

 1.39 

 2.92 

 1.76 

 3.64 



.68. 



.72 



.24 

 1.05 



0.90 



.95 

 .04 

 .29 

 .03 

 .48 

 .20 

 .21 

 .43 

 1.58 

 .67 

 .17 

 .03 

 .76 

 .17 



1.62 



.25 

 .03 

 .25 

 .32 

 .47 

 .36 

 .31 

 .80 

 .32 

 .52 

 .95 

 .38 

 1.77 

 .75 



0.73 



1.06 



.28 



1.55 



.20 



.15 



.17 



.60 



1.57 



1.46 



3.41 



2.84 



.10 



.28 



.35 











1.70 

 .18 

 .91 

 .92 

 .20 



3.17 

 .61 

 .74 



2.28 

 .68 



2.37 



1.07 

 .47 



0.99 

 2.07 



.69 

 1.31 

 1.62 

 1.56 

 1.05 



.08 



(') 



.84 

 1.73 



.32 

 1.57 



.75 

 3.35 



0.94 

 1.09 

 1.45 



.53 

 1.98 



.24 







1.01 



1.47 

 .50 

 .46 



1.53 

 .58 

 .44 



1.25 



1.36 



1.91 



.19 



1.40 



1.72 



.52 



.97 



.57 



1.82 



1.97 



.62 



1.51 



.84 



.66 



.27 



15.67 



1899 



1900 



17.43 

 10.34 



1901 



13.31 



1902... 



12.49 



1903 



12 58 



1904 



U.20 



1905 



12.63 



1906 



18 48 



1907 



15.43 



1908 



16.66 



1909 



16.19 



1910 



9.08 



1911 



10.11 



1912 



12.61 





Average 



Maximum 



Minimum 







1.12 

 2.57 



.28 



1.23 

 2.25 



.2.5 



1.81 



3.96 



.12 



1.37 



3.70 



.29 



1.84 



5.57 



.16 



.45 

 1.58 



.03 



.60 



1.77 

 .03 



.98 



3.41 



.10 



1.02 

 3.17 

 



1.19 

 3.35 



0) 



.90 

 1.98 







1.09 

 1.97 

 .19 



13.61 

 18.48 

 9.08 



/898 /899 /90O /90/ /902 /903 /9Q4 /9QS /9Q6 /9Q7 /9Q8 /9Q9 /9/0 /9// /9/2 



Table I shows that 

 the maximum" precipi- 

 tation during the 15 

 years from 1898 to 

 1912, inclusive, was 

 18.48 inches (in 1906) 

 and the minimum for 

 the same period was 

 9.08 inches (in 1910). 

 During that time the 

 precipitation has been 

 above normal six 

 years, below normal 

 nine years. This fact 

 is shown graphically 

 in figure 5. 



Tabic I shows, further, that March, April, and May are the wettest 

 months, May having the highest average, 1.84 inches. June and 



FlG. 5.— Graph showing the annual precipitation in inches for the 

 15-year period, 1898 to 1912, inclusive, at or near the substation, 

 Nephi, Utah. 



