FLORIDA GEOLOGICAL SURVEY


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Figure -5. Map of central Florida showing mineral content of water in the
 Floridan aquifer.


seepage into and out of the basin. The basic concept is that water
loss is equal to evapotranspiration; that is, water that returns to
the atmosphere and thus is no longer available for use. As used in
this report, water loss is not adjusted for seepage into or out of


 where, L is water loss
 P, is effective precipitation
 i I






















 R is streamflow
 AS is change in storage both

 surface and underground
 Use of an effective precipitation (Searcy and Hardison, 1960)
is one way5. ap of makicentrallorida showing mineral contee amount of water in the
 Floridan aquifer.


seepage into and out of the basin. The basic concept is that water







carrloss is equal to evapotranspiration; that is, water that returns tobasin.
the atmosphere and thus is no longer available for use. As used in
this report, water loss is not adjusted for seepage into or out of
the basin. Thus, the equation for water loss is:


 where, L is water loss




 Sis effective precipitation (P), as commonly used, is that part of the
 precipitation (Po) for the current year and the part of the
 AS is change in storage both
 surface and underground

 Use of an effective precipitation (Searcy and Hardison, 1960)
is one way of making allowance for the variable amount of water
carried over from year to year as ground water storage in the basin.
Effective precipitation (Pe), as commonly used, is that part of the
precipitation (P0) for the current year and the part of the