84 FLORIDA GEOLOGICAL SURVEY

surface, the aquifer releases or takes into storage 0.013 to 0.0013
foot of water per square foot of surface area of the aquifer.
 A comparison of the results of laboratory tests with pumping
tests indicate that the permeability of the Floridan aquifer is
largely dependent upon the presence of solution holes (caverns,
pipes, etc.) which, of course, are not represented in the small core
samples.


 Davenport- Horse Creek area
 -Eastern area
 ----*-- -*-- Northwestern area
 a-- --- --- Southwestern area
 ----x---- x-- Dode City area


 1 r I1 111 i iI I I i II
t---

 -A
 / /


 S--/ / /
 I: -






 SI I

 0,000 100,000 1,000,000
 COEFFICIENT OF TRANSMISSIBILITY
 (gpd/ft)
 Figure 38. Graphs showing the relations between coefficient of transmissibility
 and depth of penetration in the Floridan aquifer.


 The values of T for the pumping tests in table 10 were plotted
 against depth of aquifer penetration, as shown in figure 38. The
 wide range in values of T are caused by unequal penetration and by
 areal and vertical variations in permeability. Areal analysis of
 the data indicate that generally the eastern side (Davenport-
 Horse Creek area) of the Green Swamp area has a low value of T
 and the western side (Dade City) has a high value of T. Therefore.
 the test data were evaluated by location and depth of penetration.