Biscayne Aquifer

Fed from the Everglades, discharging into the Bay, the Biscayne Aquifer is also the sole source water supply to the Miami East Coast. Talk about the aquifer that ties the room together! | Aquifers | Biscayne | Floridan | Intermediate | Surficial | Springs | Estuaries and coast | Water bodies | Florida’s water districts

Intro - World's fastest aquifer?

By Robert V. Sobczak

Maybe not the fastest ...

It is one of the most permeable aquifers in the world.

Permeability describes how easily water moves through an aquifer. Sand for example, is porous and typically makes a great aquifer, but because the void space between sand grains is small, it typically travels slow, maybe 10-50 per day under its own inclination (i.e. not including pumping), maybe even less. Compare that to a limestone resembling swiss cheese that forms the Florida's Biscayne Aquifer. Wedged shaped and thinning to the northwest, the Biscayne Aquifer is about 200 feet thick towards the coast and forms the main water supply for the Miami East Coast. As for the speed, even prior to groundwater pumping, there are stories of freshwater springs funneling up in the middle of Biscayne Bay. Coastal canals and Everglades drainage caused saltwater intrusion, a problem that was famously fixed by Gerald Parker of the U.S. Geological Survey -- although still persists today as a growing concern as sea level continues to rise.

As for how fast, several hundred feet, and over a thousand in it's most porous parts.

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Quotable: “The water cycle is our passport to nature”