Title: Statements
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Permanent Link: http://ufdc.ufl.edu/WL00002175/00001
 Material Information
Title: Statements
Physical Description: Book
Language: English
 Subjects
Spatial Coverage: North America -- United States of America -- Florida
 Notes
Abstract: Statements
General Note: Box 10, Folder 6 ( SF Water Crop - 1978-1979 ), Item 4
Funding: Digitized by the Legal Technology Institute in the Levin College of Law at the University of Florida.
 Record Information
Bibliographic ID: WL00002175
Volume ID: VID00001
Source Institution: Levin College of Law, University of Florida
Holding Location: Levin College of Law, University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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TIn omrc of rstr for the Floride Aquifer, where its petentiemtric sur-

face is leowar than th ter table, is by dmwward sepage from the shallow

pWifer. Mh the pioMtimetric surface is higher then the water level

I1 the shloNw Oqifwr, the source of the water is at som distance upgradiel t

edre the .ctml reclrge takes place. The rate of mv oent of water from

Sthe shllaw aquifer to the Florida. Aquifer, or vice versa, depends on the
mter-trammitttng characteristics of the clay unit separating the two aqifers

t the differvnce i t th elevation of water level in the shallow aquifer an

the petentlmtric surface of the Floridan Aquifer.


__




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S Management decisions are not only concerned with the avaDability of water
in an area, but also with the method by which the water is withdrawn.
Management practices must either:
1. Provide a means by which water can be made available to replenish
the zones in which the water levels are lowered, or
2. Restrict withdrawal to zones or components that can annually

replenish or recharge themselves, or
3. Allow the water level to decline in this zone.


Withdrawal of water from the aquifer must be limited to the water crop in
the recharge area to prevent a reduction in storage or a decline In water
level. Fortunately, most of the Southwest Florida Water Management District
Is in a recharge area.. The water level of the shallow aquifer is at a
greater elevation than the potentiometric surface of the Floridan Aquifer
throughoutmost of the District.


The source of water for the Floridan Aquifer, where its potentiometric sur-
face Is lower than the water table, is by downward seepage from the shallow
aquifer. Where the potentiometric surface is higher than the water level
in the shallow aquifer, the source of the water is at some distance upgradient
where the actual recharge takes place. The rate of movement of water from

) the shallow aquifer to the Floridan Aquifer, or vice versa, depends on the
water-transmitting characteristics of the clay unit separating the two aquifers
and the difference in the elevation of water level in the shallow aquifer and

the potentiometric surface of the Floridan Aquifer.


When water is withdrawn from an aquifer, the water level is lowered and a cone
of depression is formed in the potentiometric surface around the discharging
well. In response to the lowered levels in the cone of depression, a second
more subdued cone of depression is formed in the water table of the overlying
shallow aquifer (Figure 4). The difference in the elevation of the
water level in the shallow aquifer and the potentiometric surface of the
Floridan Aquifer is greatest at the point of withdrawal; likewise, leakage
from the water-table aquifer is greatest at the point of withdrawal, other

conditions being equal.








) Management decisions are not only concerned with the av ability of water
in an area, but also with the method by which the water is withdrawn.
Management practices must either:
1. Provide a means by which water can be made available to replenish
the zones in which the water levels are lowered, or
2. Restrict withdrawal to zones or components that can annually
replenish or recharge themselves, or
3. Allow the water level to decline in this zone.


Withdrawal of water from the aquifer must be limited to the water crop In
the recharge area to prevent a reduction in storage or a decline in water
level. Fortunately, most of the Southwest Florida Water Management District
is in a recharge area.. The water level of the shallow aquifer is at a
greater elevation than the potentiometric surface of the Floridan Aquifer

throughoutmost of the District.


The source of water for the Floridan Aquifer, where its potentiometric sur-

face is lower than the water table, is by downward seepage from the shallow
aquifer. Where the potentiometric surface is higher than the water level
in the shallow aquifer, the source of the water is at some distance upgradient
where the actual recharge takes place. The rate of movement of water from

) the shallow aquifer to the Floridan Aquifer, or vice versa, depends on the
water-transmitting characteristics of the clay unit separating the two aquifers

and the difference in the elevation of water level in the shallow aquifer and

the potentiometric surface of the Floridan Aquifer.


When water is withdrawn from an aquifer, the water level is lowered and a cone

of depression is formed in the potentiometric surface around the discharging

well. In response to the lowered levels in the cone of depression, a second
more subdued cone of depression is formed in the water table of the overlying
shallow aquifer (Figure 4). The difference in the elevation of the
water level in the shallow aquifer and the potentiometric surface of the
Floridan Aquifer is greatest at the point of withdrawal; likewise, leakage
from the water-table aquifer is greatest at the point of withdrawal, other

conditions being equal.


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