tAINFALL OF WESTERN PORTION OF UNITED STATES. AT 
year to year are so great that an isolated record of a single year is of no 
value as an indication of the average rainfall. The mean of two or three 
years is almost equally liable to mislead, and only a long series of observa- 
tions can afford accurate results. In the following tables no stations are 
included (with one exception) which show records of less than five years’ 
extent. 
Table I shows the precipitation of the Sub-humid Region; Table II, 
of the Arid Region; Table III, of the San Francisco Region; and Table 
IV, of the Region of the Lower Columbia. The limits of each region have 
been given in a former chapter, and need not be repeated. In each table 
the first column contains the names of the stations of observation; the 
second, their latitudes; the third, their longitudes (west from Greenwich); 
and the fourth, their altitudes in feet above the level of the sea. The next 
four columns show for each season of the year the mean observed rainfall 
in inches, and their sum appears in the following column as the mean 
yearly rainfall. In the last column the extent of each series of observa- 
tions is given in years and months. In Table I the stations are arranged 
by latitudes, in Tables II, II, and IV, alphabetically. 
TABLE I.—Precipitation of the Sub-humid Region. 
Mean precipitation, in inches. Fs 
a . = : . oH | 
Station. = S B S - ° 
| &] gp ee | See) ee | 
‘S 3 3 Ne 3 ne Ss % 
WW H =i ) 4 a | i) | 
o 4 or Feet. | B fe & 
Pem Dine GWAC eee San ae nc ae peso ces scenes 48 57 97 03 768 4.02 7. 24 | 2571 4 8 
Morn Lotion; aes meaas ctercaaaccis os cise aeescc 47 56 99 16 1, 480 5.18 TM. 2.50 5 5 
Fort Abercrombie, Dak ......-. 4627 | 96 21 ]........ 4.80| 867] 3.45 13 6 | 
Fort Wadsworth; Dak ...< --..--.0ss20005250 45 43) 9710] 1,650 7.00 | 10.25 3. 98 6 5] 
Omaha Aimeney. ODT << as. <-a<-sc0asersodececss | 42:07 | 96:22°)...2.. 2. 821) 870] 5.77 5p 
Fort Kearney, Nebr...-.....--- 40 38-98 57 | 2, 360 7.81 | 11.13 | 4.83 14 4 
Nort Riley, Kansjo-23 2.222222. 39 03 96 35 1, 300 5.49 | 10.48 | 5. 92 20 10 | 
RortHaysaeKansiecss<c2.<c2s0c8,- 38 59 99 20 2, 107 6. 93 6.25 6.77 611 
Fort Larned, Kans ...-.-...---. 3810} 9857] 1,932] 5.17] 9.63] 4.95 10 9) 
Kort Belknap, Tex .....-...-... 33.08 98 46 | 1, G00 6. 41 9. 44 8. 34 5 10 | 
MortiGrifiin Tex: 6s. ccsusee een 32 S4 tt ©: il tree 4.95 6.25 6.14 5 3 
Fort Chadbourne, Tex .....-... | 3158} 10015] 2,020] 5.77| 653] 7.06 8 7) 
Fort McKavett, Tex ...-....--. | 30 48, 100 08 | 2, 060 5.21] 6.71 7.81 9.7] 
New Braunfels, Tex.--..-...--. -. | 2942] 98 15 720 7.60 | 6.90 8. 83 a a. 
Mort (Clarkwlexcs 2s. <2 sec aos. ae all 29:17, | 100 25 1, 000 4.14 | 1.57 6. 595 12.54) 
Fort Inge, Tex.. | 99 50 845 5.38 | 9.67 6. 88 7 4) 
Vort Dunean, Tex --| 100 30) 1,460 3. 56 8.60) 6.54 aba! 
| 29.5 | 97 37 50 3.18 7. G4 13. 02 15 0 
