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Water-Related News

Florida DEP issues Everglades permit for stormwater storage and flow

Permit to South Florida Water Management District continues work on Everglades restoration

PALM BEACH COUNTY – On Nov. 6th, the Florida Department of Environmental Protection issued a permit to the South Florida Water Management District to construct the L-8 Flow Equalization Basin, a structure designed to store 15 billion gallons of water so that it can be treated and moved south to the Everglades. It is one of three storage components of Governor Rick Scott's Everglades Water Quality Restoration Plan.

When construction is complete, stormwater - which at peak flow times is released to the ocean - will be safely held in a deep reservoir and later cleaned and redirected to the Everglades. It will allow water managers the flexibility to store stormwater that under certain peak flow scenarios may have been diverted to the ocean or water conservation areas -- and direct flows for treatment prior to entering the Everglades.

The L-8 flow equalization basin will use a 53-foot-deep reservoir capable of storing approximately 45,000 acre-feet of water, or the equivalent of 22,500 Olympic-sized swimming pools of water. The seven interconnected underground cells will be utilized to effectively manage basin stormwater. During storm events and other peak flow events, the reservoir will act as a storage feature. During dry periods, the reservoir will deliver flows for optimized treatment prior to those flows entering the Everglades.

The below-ground reservoir was a former rock mine site located in central Palm Beach County. The location’s unique geology allows for deep, below-ground storage, reduces water loss through seepage and minimizes levee safety concerns. Construction of embankment protection features is currently underway. The permit authorizes construction of a permanent discharge pump station and inflow feature. Construction of the pump station and inflow spillway is scheduled for November 2013 through April 2015.