HYDROLOGY OF NEW YORK 



161 



we have given the distance from the curb to the water surface on 

 the first day of December, 1886, and on the first day of each month 

 thereafter, and also the rainfall of the preceding month. 



(Scale for night of ground water in feet and for rainfall in inches.) 



Fig. 4 Diagram showing the relation between rainfall and hight of ground 

 water at the Geneva Agricultural Experiment Station, from December 1, 

 1886, to December 1, 1889. 



In the cut, figure No. 4, the figures in table No. 36, have been 

 platted, showing graphically the relation between rainfall and 

 hight of ground water for the three years from December 1, 1886, 

 to December 1, 1889, inclusive. In discussing these records, the 

 Acting Meteorologist of the Agricultural Experiment Station 

 notes the following facts : 



1) Fluctuations in the precipitation from month to month did 

 not much affect the hight of the water-table. The very light pre- 

 cipitation of January., 1887, did not stop the rise of the water- 

 table, nor did the extremely large rainfall of July of the same year 

 cause the water-table to stop falling. 



2) The rapid rise in the water-table from January 7 to April 

 1, 1888, or from December 1, 1888, to January 1, 1889, was not 

 due to large precipitation during this time, nor was the fall from 

 May 7 to November 1, 1888, due to small precipitation. 



3) The rapid rise of water from November 18 to December 1, 

 1889, was in part at least due to the heavy rainfall of the 18th to 

 23d, which found the soil nearly or quite saturated. The rainfall 

 for that time was 2.60 inches, followed by 0.51 inch inore during 

 the latter days of November. 



