| Thickness of the upper confining
unit of the gray limestone aquifer, southern Florida, 1998, WRIR
99-4213 figure 22 |
| Abstract: |
The upper confining unit ranges from 20 to 60 ft in thickness in most
of the study area, but is absent to the west and southwest in much
of Collier County and most of Monroe County. The confining unit is
thickest in south-central and southwestern Miami- Dade County, where
the unit is as much as 125 ft thick in well G-3314. This area corresponds,
in part, to areas of low structural altitude of the top of the gray
limestone aquifer. The unit thickens to 50 ft or more in an area that
extends southeastward from southern Hendry County through northeastern
Collier County and into western Broward County. This area also generally
corresponds to an area of low altitude of the top of the gray limestone
aquifer. The confining unit also thickens to 50 ft or more in southern
Palm Beach County and north-central and central Broward County. Local
thickening occurs in west-central Collier County in well C-1178 and
corresponds to an area where the gray limestone aquifer also thickens.
The upper confining unit is thin in an area that includes small contiguous
parts of southwestern Palm Beach, northeastern Broward, and southern
Hendry Counties, and in this area the underlying gray limestone aquifer
is both thick and its upper surface is elevated. In southeastern Hendry
County, the upper confining unit is locally absent; quartz sand deposits
equivalent to the upper confining unit here have moderate hydraulic
conductivity. |
| Metadata: |
glime_thk_ucu_arc |
| Shapefile: |
glime_thk_ucu_arc [ZIP 17 KB] |
| Online Report: |
WRIR
99-4213 |
| Browse Graphic: |
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