WATER RESOURCES OF ORANGE COUNTY 89
(832-105-2), figure 37. The casing of this well extends 75 feet below land surface into a 12-foot shell bed. At this site there is also a record of the fluctuations of the water table (well 832-105-3) and the fluctuations of the piezometric surface of the Floridan aquifer (well 832-105-1). The water level of the secondary artesian aquifer is always below the water table and above the piezomtric surface of the Floridan aquifer at this site. This relation probably exists wherever the water table is continuously above the piezometric surface. At this location the secondary artesian water level is 6 to 12 feet below the water table and 6 to 14 feet above the water level in the Floridan aquifer. The range of fluctuation of the water level in the secondary artesian aquifer for the period of record was about 31/2 feet or from 7 to 10/ feet below land surface. The secondary aquifer water level does not respond rapidly to rainfall. The recorder chart usually shows very little daily fluctuation, however there is a gradual long-term decline or
o Well 832-105-2---~
Depth 5 feet
S Sceened3 feet
z Depth 492 feet
Cased 651 feet
No aesion aquifer
Cased 1 -'T k-k..fee..
201 < Csd 65 feet I
15
- o
Z20 we l 1332-105-f '
OJ. F MA M JJASO N D J FM AM J .1 A S ND J F MA M.1J AS ON DJ F MA MJ d AS OND0
1960 1961 1962 1963
Figure 37. Relationship between, water levels at Bithlo and rainfall at Orlando.