IOWA ACADEMY OF SCIENCES. 



163 



SIOUX CITY. 



Precipitation in Inches. 



Year. 





W 



1893 



1894 



1895 



1896 



1897 



1898 



Average 



2.29 

 1.81 

 2.63 

 5.54 

 2.26 

 2.78 



2.88 



5.85 

 1.68 

 1.54 

 0.86 

 2.51 

 3.10 



2.59 



1.11 

 0.73 

 3.91 

 2.09 

 0.51 

 95 



1.55 



23.83 

 18.79 

 20.29 

 30.77 

 20.38 

 22.91 



22.83 



CLARINDA. 



COUNCIL BLUFFS. 



The precipitation for Council Bluffs for 1900 was 31.87 inches. 



It will be seen from the above tables that the average 

 rainfall for a period of six years in the northern section 

 along the Missouri river at Sioux City was 22.8 inches, at 

 Clarinda in Page county, 29.26 inches. Compare this with 

 the precipitation in Keokuk in the southeastern part 

 of the state the precipitation for the same period was 

 34.16 inches. Now compare this with the mean annual 

 temperature for the same regions: Keokuk, 52.2'^F., 

 Sioux City, 46.4^F., Clarinda, 49.9'-' F. The greater number 



