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Biscayne Aquifer - Renewal & Removal of Groundwater - Page 2

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What is an Aquifer?

General Information

Saltwater Intrusion

Saltwater Intrusion Animation

Renewal & Removal of Groundwater -Page 1

Renewal & Removal of Groundwater page 2

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Urban Development
The replenishment of an aquifer relies on the permeation of the ground with water from rain. In urban areas, areas with high concentrations of concrete and asphalt or other non-permeable areas, the water doesn’t pass down through the soil and into the aquifer.

ASR Well
"Typical Deep Ground Injection Well and ASR Well in South Florida." From the Comprehensive Everglades Restoration Plan: Aquifer Storage and Recovery Program

Wells
Wells are the means by which South Florida’s population access the groundwater of the aquifer. About 330 million gallons of water per day are pumped from the Biscayne aquifer through wells descending an average of 80 feet below the ground surface (Miami-Dade Government).

Aquifer Groundwater Storage and Recovery
Aquifer Storage and Recovery wells (ASR) are being explored as a part of the Comprehensive Everglades Restoration Plan. They are a potential means of protecting South Florida’s groundwater supply and Everglades’ water supply. These wells have been in use in parts of Florida and the United States since 1980’s. The principle of the ASR well is that when the water level is high, excess water is pumped further underground into confined aquifer (an aquifer sandwiched in between two impermeable layers of material). The water is then extracted during times when the water level is low.

Sources:
1). U.S. Geological Survey. The Ground Water Atlas of the United States: Alabama, Florida, Georgia and South Carolina, HA 730-G. By James A. Miller. Published in 1990. http://capp.water.usgs.gov/gwa/ch_g/index.html
2). Miami-Dade County, Department of Environmental Resources Management. Water Supply. http://www.co.miami-dade.fl.us/derm/Water/supply_treatment.asp
3 ) U.S. Geological Survey. Circular 1262. Ground Water in Freshwater-Saltwater Environments of the Atlantic Coast. Box F. Aquifer Storage and Recovery in South Florida. By Paul M. Barlow. http://water.usgs.gov/pubs/circ/2003/circ1262/#boxf
4) Comprehensive Everglades Restoration Plan (CERP). Document: Comprehensive Everglades Restoration Plan: Aquifer Storage and Recovery Program. http://www.evergladesplan.org/docs/asr_whitepaper.pdf