4 BULLETIN 1301, U. S. DEPARTMENT OF AGRICULTURE 
TaBLE 3.—Monthly, seasonal, and annual precipitation at or in the vicinity of the 
Northern Great Plains Field Station for the 48-year period, 1875-1922, inclusive 
[Data in inches; T=trace. The records from 1875 to 1913, inclusive, were obtained by the United States 
von Bureau at Bismarck, N. Dak. Those from 1914 to 1922, inclusive, were obtained at the field 
station 5 
| | | | | Sea- 
| | | | | | sonal,| 4 1. 
Year Jan. | Feb. | Mar.| Apr. | May | June | July | Aug. | Sept.| Oct. | Nov.| Dec. | Apr. anal 
| | | to 
| | | | | Aug. 
LS Da see 1.13 | 1.32 | 2.06 | 4.22 | 3.40 | 5:02) 12554 |) 2°89) | 1085 | 237 | 1.33 10239) 7 Orme heme 
TSAO ee es 78 | 1.45 | 3.27 | 2.77 | 5.74 | 1.24 | 1.48 | 6.55 | 5.61 30 .86 | .87 |17. 78 | 30.92 
Res ees ey shea eee 1. 64 .19 77 | 1. 32 | 4.15 | 4.60) 2.52 ni) 11 94 -40 | .69 |12.94 | 17.68 
SiS ees ae ee AP 267 1S46Ri eds dl | 3.15 | 2avSmiad ea 22009 67 | 1.45 SCAT ys Sh USS (XO) | 240), 2B 
NST Owe ess m5 82 58 | 2.60 | 3.67 | 4.97 | 4.27 | 2.69 07 | 1.35))-2216) || 1285 188200 e22Nen 
USS Osees Ss ae . 30 16 69 | 3.65 | 2.76 | 2.32 | 2.02 | 4.82 72 27 .87 | 1.17 115.57 | 19.75 
ISS Temas Se . 69 78 45) 1202 192027 || Ase 28) 2298 3) 266 er ole| eon menOGr oll OGu tll oseio 
1882 See OB 30)| 1.22) | 3.5613. 46 | 35887) 4531 30) | 1.74 | 1.44 | 246). 43) 115) 51) |) 212 38 
SS Bem es Secoetales 1 OS 66 38.) 1.57 | 1.15 | 3.84 } 1.32 98 04 | 3.88 26 | 1.33 | 8.86 | 15. 66 
1M Ste bosons pee sae .38 87 GON25 20 2856: IP SkGSRRSNG2NSasO Mi 2yo4s eee Oz 5 Cex) 1 at eek | OB} 8X5 
SS teks es moll 36 18 | 3.21 | .92 |) 2.389 | 2:41) 1.62) 14) - 54 66 | .34 |10.55 | 13.08 
SSG meets se NGZh erro: 94°) 1549.) 1.73 | 28037) 1343" 145) 288 - S65n e245) aGelnseon eloe2e 
TUS NSHY (a i an ae .95 OZ (3) \ Vo2 2: 19 G00) 42 495162) | siode lle elp sl) SOONG 7a IeGiss 
1SSSmeeeee ee .96 | .44 CHE le sabh eer MaeGs 0 || ee OE ik 783 33), 102)|" 338) 2.240227 6san 
SSOP =e ee 2 50 | 1.48 55 26003535) | ROsa|s200Le eos . 48 Aly 6 Aes) .69 | 7.18 | 11.03 
SORA Ses 80 | .27]| .49 68. |) 2.57) || 85400 W145 | 169s Sn RS ere 14s eo 2 Mee Sin ts eee 
TSO Deke Le .05 | .57 | 1.24 | 2.40 | 2.92 | 4.19 | 4.20 | 1.43 87 |} .99 | 1.20] .44 |15.14 | 20.50 
1802 ie Pao ai . 29 55 95 | 3.23 | 1.79 | 3.49 | 3.18 | 2.40 66 86) > =66) |) 216 aN sa eisai 
TQOSS ae eee .73 203| sls 52 69 | 1.26 | 4.33 | 1.48 G7AlPes 95 24 | 1.49 | 8.48 | 13.74 
894 seeee eee . 20 04 | 2.27 | 3.40 UMN 28) . 30 42 | 3.83 .87 | .40 .06 | 6.65 | 14. 32 
IG see ee . 89 35 24 | 2.53 | 3.80 | 401 | 2.08 | .40)| .67 .08 | 1.60 .27 |12. 82 | 16.92 
1SOGH= Sea Fee oa . 81 31 . 84 | 2.23 | 1.98 | 2.64 | 1.03 | 1.77 | 1.42 . 48 | 3.10 ..03 | 9.65 | 16. 64 
118 Oss ee MoU: || hey .91 | 1.40 | 1.10 | 3.44 | 1.53 | 2.25 . 30 . 42 25) 230h | Oui2aiel4533 
ISOS eee tee | . 20 485) 1 OOs e229 2565) | S21 e648 loos meecOn ie 2aG0 a6 .44 | 7.97 | 13. 67 
eS ee | 09 |. 18 | 9.88] 1.31 | 4.30 | 58575) 9.451) 297) 206) | e550 3847s | = Gs NG On tone 
190028 as_ Ls | .28 .30 | 2.24 58 | 1.26 | 2.32 | 1.14 | 2.92 | 4.27 | 1.43 | 1.03 SIS Sa 225 elvacs 
1O0l2= sees = O03: .16 . 96 . 36 tale? SE OZE Wh ae Onl |i 27 a ®) . 30 96 | 9.82 | 15. 59 
LOO2E 2 at seers . 05 PALA 24 140) £26: 1538)-20))|) SNGSe|e27 04, | IN C4 se Ae Ee St LOM 27S SS9 5) 
1903355 eeeee= . 82 . 09 ~12 .61 | 3.30 | 1.44 | 2.18 | 5.59 | 2.36 iG .28 | 1.05) 113.02) |) 17296 
10042222 . 58 541) W6OP aa Gk yl ns Ue eb eto 90 | .68 | 1.03 | 1.24 .03 | 1.39 | 8.09 | 14.17 
1905 ee ole) - 504 116 072) 1287| Sela e8e244 | Me | 4s ees SOR ela oO) |e OSe lab Om ene 
1906255222 see 7 . 06 32 -85 | 5.37 | 4.78 ! 1.15 | 2.04 . 60 5 Oe) It de Sts) . 64 114.19 | 18. 22 
190 (Zen Ree 1.01 | .57 | 1.09] .67 | 1.98 | 3.63 | 4.32] .61 | 1.19 80 | .36 32) |i Die Ges 5 
1ODSNas. eee SOE UAE Meaty. |p aloe} | 2.89 | 2.29 82 | 2.44 59 | 1.81 | 1.60 08 {10.17 | 16.91 
O09 Fone 5A . 36 27 .84 | 4.43 | 2.19 | 2.41 | 4.77 83 78 .41 | 1.05 |14. 64 | 18.55 
HONOR a See 5 OY - OF 54 SON ne 2895 93 | 1.26 | 2.66 75 .14 31 | 6.44 | 11.98 
Chie 1. 50 . 42 1G 8), 118) | 2eSsel lls onion 226 TAY | of} 30 | 8.94 | 15.22 
ONZE 2 Sane . 18 . 08 LOM 2530F 3h03. | tsa ode Noel Suleeyoonln 242 94 Ah 40 |14.39 | 19.11 
1Olgeee. ae eee SYe | oOR3 49 55:15:99) | QlOG Ra 72 alowed elas 20 nel Sule 6 28 | 8.09 | 12. 84 
TNC bs Se ae ye . 07 .05 | 1.89 | 1.55 | 3.57 |10.68 | 1.35 | 1.89 ! 1. 24 90 Saul 37 |19.94 | 23.87 
LO ue= see ees . 07 4 30 | 1.11 | 4.98 | 6.32 | 6.48 . 63.| 1.84 | 1.85 . 34 14 19. 52 | 24.06 
1OUGE Stee te . 28 .09 | 1.88 193° 2 12169) |: 22 25m|nssone 2504 92 27 | .07 | 1.10 {10.46 | 15. 07 
OLE ss = . 28 .19 SON ISSA aod. | ee DOMleroS . 89 | 1.97 Oda 203 19 | 7.25 | 10.31 
TRC ares ae ne oer . 20 11 45.| 2.61 | 2.45 . 68 |-2. 47 | 2.03 63 27 .45 | 1.02 |10. 24 | 13.37 
OUO eee oe . 08 SOR MeaSon lenia sigon05- | eles, 85 | 1.22 49 98 | 1.19 | .25 | 8.86 | 13.48 
19208o ee N52 ~20:| 1.21 208) | 12 72) | W850 2868) | O1S S1e a9 25 37 .21 | 8.64 | 12.69 
UC 7 ees .18 OOS) S279 2559 3. 05 12st aroOag 620) | 158: |) 139) 18% 24 |10.09 | 15, 23 
NOD 2a eo een WSs |i Abs YS) 5 GY . 66 | 2.05 | 3.43 | 3.17] .32 | 2.31 . 64 | 1.60 82) | 9563) al 7o35 
| | | 
Average: | | | 
48 years___| .48 47 .97 | 1.66 | 2,46: | 354252530) | 186" |1..30 . 96 61 56 |11 69 | 17.04 
Se yeanseaal 5 22, Saye Oe | ole owl | PAY |e Gil) || 25 too |) LPB} | 1, 36 | 5 Ue 58 48 \11. 53 | 16.16 
Table 3 shows the precipitation for the 48 years from 1875 to 1922, 
inclusive. The records from 1875 to 1913, inclusive, are from Bis- 
marck; from 1914 to 1922, inclusive, from the field station at Mandan. 
The winter precipitation at the station is measured by the rain gauge, 
which often fails to measure snow accurately. When there is reason 
to believe a measurement is inaccurate, the record of the United 
States Weather Bureau at Bismarck is substituted for the Mandan 
record. 
Approximately 70 per cent of the total annual precipitation occurs 
during the growing season, from April to August, inclusive. Table 
3 and Figure 1 show that the years 1916 to 1921, inclusive, were excep- 
