558 



IOWA DEPARTMENT OF AGRICULTURE' 



State, occurred. Crest stages occurred at Dubuque on the 18th, at Daven- 

 port on the 19th and at Keokuk on the 21st. At the end of the month 

 low stages were general on the Mississippi. The interior rivers were 

 low except for brief periods. 



1890. 

 1891- 

 1892- 

 1893- 

 1894. 

 1895. 

 1896- 

 1897- 

 1898- 

 1899- 

 1900- 

 1901. 

 1902- 

 1903- 

 1904- 

 1905- 

 190G- 

 1907- 

 1908- 

 1909- 

 1910. 

 1911- 

 1912-, 

 1913- 

 1914- 

 1915- 

 1916- 

 1917. 

 1918.. 



T indicates an amount too small to measure, or less than .005 inch precipita- 

 tion, and less than 05 inch snowfaU. 



SEPTEMBER. 



September mean temperature, 58.6°, is the lowest of 29 Septembers, 

 except 1896, which was only 0.1° cooler. The deficiency in temperature 

 was greatest, 8°, in the extreme northeast portion and least, 2.6°, in 

 Adams County. The temperature was normal or higher on very few 

 days. During the coolest period, 18th-21st, heavy to killing frosts covered 

 all sections of the State except a distance of about 50 miles west of 

 the Mississippi River, and frosts reached most of the east-central counties 

 on the 27th. Precipitation was deficient except in Floyd and surrounding 

 counties where heavy rains on the 10th caused a monthly excess; also 

 in "Wapello and adjacent counties where heavy rains fell on the 2d and 4th. 



Due to the great damage by frost last year, the seed corn available 

 for planting this season was limited largely to the earlier varieties. This, 

 together with a favorable season, left little corn subject to damage by 

 the early frosts. That planted after the June floods suffered most. 



