6 BULLETIN 30, U. S. DEPARTMENT OF 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. 
TaBLeE I.— Monthly and annual precipitation (in inehes) 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.| Dee. | Total. 
TN ROS sires pS cetera Sy 0.80 | 0.25 } 1.45 | 1.06 | 5.57 | 0.90 | 1.62 | 0.73 | 0 0.99 | 0.94 | 1.36 | 15.67 
FSOO Kranich Ss Meg oae AS E225) |S sOOs) seiilalelee 95 25 | 1.06 | 0 2.07 | 1.09 | 1.91} 17.43 
190022 ee eS eee ke SSie|eeehO}| ZN Sa e0 57 | .04 03 28 | 1.70 | .69 | 1.45 19 | 10.34 
TOO Ns Re eee ete 93) P2523: 1) A588) 102) 1274s 2295 | 325) | 155 a3 lea ee | S35 ieee ee Rey! 
TOQQ UA. es ine tae Oo ee 2. Ale et 20 TGA 203: |= -32 20 91 | 1.62 | 1.98 |} 1.72 | 12.49 
A903 er 1.64 | .98] 1.33-] 2.03 | 2.26) .48 47 15 92 | 1.56 24 52] 12.58 
5) a eee ee ee ~ 68] 1.44-)°2.41-|. =. 80) |-3:10)} -<20 SOnlely 20 | 1.05 | 0 .97 | 11.20 
LOD Fae ie eta aes oe 328 0\ 2.228) Lol 2230) aia a oll OOM: Ooty) |e OSM tOlele eth 74 ee ONGS 
190632 1548} 2268: 1' 32835-28720 92-)) 43 | 80) 1s 015 2G) a Ee 4a7 aN S1e Soa ei geas 
190 Feee eee See 1.905} 2-02 | 142.) = 2932) 41-76) | 1. 58 32 | LACHES VAs e 50 | 1.97 | 15.43 
TODS Se 2 See ~Ol} Devt <|) PAD") 29) .8.G4 67 ||" 52-12 340 | 2228) 173 46 | .62] 16.66 
1QD9E a see ete PT | USTADS | ile Bs || 27 GSaiy aah ine 99! [2584 I OSal aioe ale msuledy ioe Ga 
IQIORE = Se Se reer L |e Gl ee relies | eA fA AURA esp sie eR || bay 58 | .84 9.08 
OLS 2s ee ee eee 1:92 - 61°} 1.05 - 56 24 76 | 1.77 28 | 1.07 iE 44 . 66 10. 11 
J OND te ae eee SS 39 29-|-2.80-| 1.47 | 1.05 17 75 30 AT | Sroon laa) Te eet Onl 
Average. ...-- 1.12 | 1.23 | 1.81] 1.37 | 1-84 45 | .60 98 | 1.02 | 1.19 90 | 1.09 | 13.61 
Maximum...-_| DEY lara RO | BTA) scy/ || aleais) leaks G7 ap Shesl Salye VSS eels || Tey | TI aR 
Minimise = <|— 628) e252 | eal 2s 229 16 63 03 10 | 0 () | 0 .19 9.08 
1 Trace. 
Table I shows that 
the maximum precipi- 
tation during the 15 
years from 1898 to 
1912, inclusive, was 
VY 
Z Bl | Pe 18.48 inches (in 1906) 
betlerte | | and the minimum for 
the same period was 
eae 9.08 inches (in 1910). 
During that time the 
precipitation has been 
above normal six 
years, below normal 
Fic. 5—Graph showing the annual precipitation in inches for the nine Af EE This fact 
15-year period, 1898 to 1912, inclusive, at or near the substation, is : shown graphically 
Ne aN in figure 5. 
Table I shows, further, that March, April, and May are the wettest 
months, May having the highest average, 1.84 mches. June and 
1898 1899. 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 /H0O 19/1 /H2 
~ 
INCHES OF PRE CMPY TATION 
~“ 
“N 
> 
S 
