Groundwater in the Biscayne aquifer is primarily recharged by
precipitation. The amount rainwater that seeps through the ground into
the aquifer depends upon how much rainfall occurs during the year. Not
all of the rainfall reaches the aquifer. The Miami River Commission
Less than 15 percent of South Florida's
rainwater reaches the Biscayne Bay Aquifer, the region's primary
drinking water supply. The rest of evaporated by the sun or drained by
canals to the sea.
|From U.S. Geological Survey. The
Groundwater Atlas of the U.S.. Figure 36
Modified from Klien and others, 1975.
The Groundwater in the aquifer is also recharged and removed by the
Florida Everglades canal system. The canals directly intersect the
The canals were constructed in the early part of the twentieth
century for the draining of Everglades land for commercial and
residential use. In the 1960’s the canal were further developed for
controlling flood water.
"During periods of less than normal precipitation, water passes freely
from the aquifer into canals that are dug into it (top diagram). When
storm runoff raises canal water levels, the movement of water is
(U.S. Geological Survey, Ground Water Atlas
of the United States)
Renewal and Removal of Groundwater - page 2