30_ 



RUTH CANAL 



VERMILION RIVER AT 

 LAFAYETTE 



i! 40 



1971 



1971 



1968 



1969 



J FMAMJ JASOND 

 Month 



15 



10 _ 



in 



1 = 



(A 



E 01 

 u 



r 5 



u 



« 

 O 



10 



B 



1964-1973 



— , — j r~ 



=4— = : == 



* ' ' ' ■*■.>.■■ 



J FMAMJ JASOND 

 Month 



10^ C 



FMAMJJ ASOND 

 Month 



30 

 25 _ 

 20 _ 

 15 



CO 10 



3 



^ 51 



E 



Z 5_ 



« 



10 



1973 



JFMAMJJASOND 

 Month 



Figure 3-33. Freshwater supply of Vemiilion Basin: (A) riverine input from U.S. Geological Survey discharge 

 data; (B) mean monthly water surplus (deficit); (C) monthly water surplus deficit in a dry year; and 

 (D) monthly water surplus (deficit) in a wet year. Calculated from U.S. Weather Service data as 

 described by Borengasser 1977. 



I 



102 



