408 



IRRIGATION PRACTICE 



Oshkosh, Wisconsin, with a rainfall of practically 30 

 inches per year, there were twenty-seven such periods of 

 drought, sixteen of which came in the spring and early 

 summer, and one of which lasted fifty-nine days. At 

 Vineland, New Jersey, with a rainfall of 47 inches, there 

 were forty-six such droughts, and 362 days during which 

 irrigation would have been helpful. At Columbia, South 



FIG. 118. The annual rainfall of Milan (famous for its irrigation), compared with 

 that of humid and arid districts in the United States. 



Carolina, of the sixty-two droughts occurring in the ten 

 years, twenty-seven lasted from twenty to thirty days, 

 four from forty to fifty days, and one lasted sixty-one 

 days, showing the frequent occurrence of rather long 

 droughts in that section of the country. At Selma, Ala- 

 bama, with over 50 niches of rainfall, sixty periods of 

 drought occurred, with 724 days needing irrigation. 



The facts of this table are only representative of a vast 

 mass of information of a similar character gathered by the 



