WATER RESOURCES OF ORANGE COUNTY 101
PIEZOMETRIC SURFACE
The artesian pressure or piezometric surface is the height to which water will rise in tightly eased wells that penetrate the artesian aquifer. Where the water table is above the piezometric surface, nonartesian water may infiltrate through the confining layer and recharge the artesian aquifer. Conversely, where the piezometric surface is above the water table, the artesian water tends to discharge upward. The piezometric surface and flowing well areas in Florida are shown in figure 45.
The piezometric surface of the Floridan aquifer in Orange County slopes to the northeast and east from its highest point in the southwestern part of the county (figs. 46, 47, 48, and 49).
 0C A M A
ZJ
EXPLANATION
Plieemettit Centeur
411016 4t111 t I lh t! iller w ovd hae titan
In fllIf, solid WeilIl tht penetrte thie
m ie? e rleon 110 Floridan
Contour InIGOV4l 10 toit. hod Ip~iliI
Hitogre t 0 en ODei tum Ii meetao ite level, Arte O feeOlta flowl
talen t el end I jete t o e eltin t i the
fl~outelva l teof the *leeerli .. peartl eglotrI I n f%& t hv PUmoilng, IkeOlivlt lmiGi rei of ol.l0on fIo are all lhivded
I.4Ieeoil 041#1oelt to at peoretilinf thle seet a MIaY1 ot the Miljler rivers and
spriling ,
ci oil.
Figure 45. Piezometric surface and areas of artesian flow of the Floridan aquifer in Florida, July 6-17, 1961.