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Freshwater resources of Big Pine Key, Florida

Open-File Report 80-447

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Abstract

The principal freshwater-bearing unit underlying Big Pine Key, Fla, is a layer of oolitic limestone averaging 19 feet in thickness. The freshwater exists in two separate lenses, one in the northern half of the island and one in the southern half. The slightly larger north lens is separated from the south lens by a low-lying land area 1 to 3 feet above mean sea level. The lenses float on saltwater in the aquifer and are affected by tidal fluctuations. The areal and depth configuration of the lenses fluctuate in response to rainfall, evapotranspiration, lateral and vertical losses, and pumpage from local wells. The lenses are not a major source of freshwater. Only a small amount of the freshwater in the lenses can be removed before saltwater intrusion will occur. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Freshwater resources of Big Pine Key, Florida
Series title:
Open-File Report
Series number:
80-447
Edition:
-
Year Published:
1980
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
iv, 40 p. ill. ;26 cm.