retention basin


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Related to retention basin: Detention pond

retention basin

A depression for temporarily storing storm water in order to reduce the rate of runoff from a drainage area.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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The store has retention basins next to its parking lot, where storm water is collected and makes its way through a natural filter before re-entering the ground.
One of the materials used in building the retention basin is a fine sand, he said.