4 BULLETIN 33, U. S. DEPARTMENT OF AGRICULTURE. 
viridula), with occasional patches of buffalo grass (Bulbulis dacty- 
loides) and western wheat-grass (Agropyron smithii). The grama, 
buffalo, and western wheat grasses supplied good grazing and have 
sometimes been cut for hay. ’ 
RAINFALL. 
Table I contains a record of the annual precipitation at Dickinson, 
by months, for the years from 1892 to 1913, inclusive. The data pre- 
vious to 1906 were recorded at the city of Dickinson; since that time 
they have been kept at the substation. 
TABLE I.—WVonthly and annual precipitation at Dickinson, N. Dak., from’ 1892 
to 1913, inclusive, with the average, maximum, and minimum for each 
month, 
[Rainfall in inches; T.=trace; data from the records of the Weather Bureau. ] 
| | | | | | 
Year | Jan. | Feb. | Mar. “Apr. | May. | June.) July. | Aug. |Sept.| Oct. | Nov. | Dec. | Total. 
| | | | 
| | 
1892 oe ee aso e 10.32 | 0.60 | 0.60 | 3.60 | 1.77 | 2.20 | 3.89 11. 50 | 0.10 | 0.24 | 0.15 | 0.38 | 115.35 
1 ESIEG Ya wh eh pee ee eet seek] | ol bs 60 | .45 | 2.90 | 12450187" | 246 | 15597 | ze | 02 1 taOG 11. 63 
RG AB yt ae os eres ae ie 0 94 | 2.40} .90} 4.48) 3.44) .95| .90) .58] .47 29 15.47 
TAS aye al ey eae -10 | .32 | 1.06 | 1.36 | 1.69 | 3.28 | 2.47 | .d1 13°} 2.25) | 734 50} 112.01 
it SOG 5 oe af ot re .92| .56 | 1.01 | 2.35 | 5.16 | 2.54 | 1.55 | .58 B02 Gone 18.48 
SG terest ee ae 1.50 | 1.20} 2.21 | 1.93 |. 73 jf 1.19 [12.34 |} 1.06 SOM Merton enon mele iB ay 
WSQS jeter, ee ad Abe . 20 38) 1502) |22500 112301 15635 770 S273 Ula SO meting 
S90 Re eee ees Wee . 20 SZHPANSS sesso | e22 50M e270" eos Ale SOSaielaas .22 20 17.27 
OOO sa Spier ie fae SA BGS} 96/2265) se A Sas e838 tele 19315 51s2 05 6u eA vel noon el Os emi los 
HOGI ae emesis | OL 2-39 |" 270 | 262) 113 1328389) 3.69 19.45 83) 22 SO) leon eee. 
AGO Dee aie Bae Ss. 2 .18 | 1.43 | 2.64 -16 | 3.02 | 2.56 |13.34 |11.89 | 1.05 | 1.10 | 1.40 | 1.30 | 116.07 
IOS E eS ae See eae | 1.85 | 1.20 | .31 | 3.591 1.18} .52 | 5.52 | 3.70] .08| .13] .82] 116.90 
1Q04 eee tel sc ee .33 | .60) 2.02] .92| .90/6.10| .32% 2.68] .26] .22) .04/ .80 15.19 
HOODS Shien s ee cranes & LPB || -Nocle) 15 09 | 2.74 ) 3.75 | 3.46 | 1.48) 2.06} .71 | 1.31 | -.08 16.55 
1O0G Hie Feo eee = .65 | .40 O85 LOM dolla 40 SIG e2564e eon el Aare an eee 20. 46 
OD eos oe . 80 .14 39 SON MsoGNi22 52512488251 sI Son ele SON 2 02 5277 13. 67 
1) 1 eae eae -28 | °.73 | 1.42 | 1.27 | 3.50 | 4.30! 1.41 | 1.41 | 1.67 | 2.47! .78| .24 19.48 
1QQO MAA Oe Pe An SEA ogy? 25 51 | 5.78 |. 3.28 |. 1.89 | 5.54) .83 | 1.08) -29 | 1.02 21.26 
1.910 sos 8s See 34a ROP leva |) ale Payee hp eyes |S sO4 es SLOT lone douse 
AQT eS Iiee Soe ee -90 | .55 | .59 | 1.63 | 2.61 | 1.27 | 2.18 | 2.63 | 2.16 | .56| .22| 15.72 
Tee cae Senne 410 | Sed 2es50 | 2.42 | 3.99 | 1.92 | 3.80 | 2.68 | 1.89 | 1.15 ike Pe be 19. 06 
TI ee ete eee eS. OF a2 52 | 1.78 | 1:77 | 1.36 | 2:70 | .94 | 1.04 ABP Poe 11.93 
Average..._. | .438 1 .47] .92 | 1.19 | 2.54 | 2.82 | 2.24 | 2.05 | 1.08 die soz 43 15. 46 
Maximum.._| 1.50 | 1. 2 2.64 | 3.60 | 7.11 | 6.10 | 4.82 | 5.54 | 3:70 | 2.73 | 2.65 | 1.25 21. 23 
| fee ABS Pe | > e1bs Ces S83 ela eeAo deen Oo OSs 0285 20 | 11.63 
} : 
1 Estimated from surrounding stations. 
The average annual precipitation at Dickinson for the past 22 
years, as shown in Table I, has been 15.46 inches. This table shows 
that the maximum precipitation during the 22 years from 1892 to 
1913, inclusive, was 21.26 inches (in 1909) and that the minimum for 
the same period was 11.63 inches (in 1893). The precipitation during 
the year 1913 was only 0.3 inch greater than the minimum for the 22 
years the records have been kept. The precipitation has been above 
normal 11 years and below normal 11 years. This fact is shown 
graphically in figure 1. Table I shows further that May, June, July, 
and August are the wettest months, June having the highest average 
rainfall, 2.82 inches. December and January are the driest months. 
Most of the precipitation from November to March comes in the 
form of snow. 
