| Limit of Gray Limestone Aquifer,
Southeastern Florida, 1998, WRIR 99-4213 |
| Abstract: |
The northern and western extents of the gray limestone aquifer were
not defined in this study. Although the aquifer is interpreted to
be absent in well C-1077 in northwestern Collier County, the lower
Tamiami aquifer is mapped as being present in most of western and
northeastern Hendry County (Smith and Adams, 1988, fig. 21), which
are outside of the study area. However, the limestones of the Tamiami
Formation, which are included in the lower Tamiami aquifer, thin to
the north, and sand and sandstone layers make up most of the thickness
of the formation in central Hendry County (Smith and Adams, 1988,
p. 10). The easternmost extent of the gray limestone aquifer corresponds
closely to the limits previously delineated by Fish (1988) and Fish
and Stewart (1991). In northeastern Broward County, the eastern edge
of the aquifer occurs at the transition from highly permeable limestone
or contiguous shell sand to a significantly less permeable facies
composed of sandy, clayey limestone and quartz sand and sandstone.
In northeastern Miami-Dade County, the eastern limit of the aquifer
is mapped where the aquifer merges with the Biscayne aquifer and the
intervening semiconfining unit wedges out. South of the Tamiami Trail,
the eastern boundary occurs at a transition to less-permeable siliciclastic
sediments. aquifer tests. An area of high transmissivity (greater
than 50,000 ft2/d) was mapped in this area and trends in the same
direction. The hydraulic head gradient also is to the southeast in
this area. Relatively rapid downgradient movement of ground water
that has been recharged in Hendry County probably causes this area
of low specific conductance.
Fish, J.E., 1988, Hydrogeology, aquifer characteristics, and ground-water flow of the surficial aquifer system, Broward County, Florida: U.S. Geological Survey Water-Resources Investigations Report 87-4034, 92 p.
Fish, J.E., and Stewart, Mark, 1991, Hydrogeology of the surficial aquifer system, Dade County, Florida: U.S. Geological Survey Water-Resources Investigations Report 90-4108, 50 p., 11 pls.
Smith, K.R., and Adams, K.M., 1988, Ground water resource assessment
of Hendry County, Florida: South Florida Water Management District
Technical Publication 88-12, 109 p. |
| Metadata: |
glime_limit_arc |
| Shapefile: |
glime_limit_arc [ZIP
10 KB] |
| Online Report: |
WRIR
99-4213 |
| Browse Graphic: |
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