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Related to detention basin: Retention pond
detention basin[di′ten·chən ‚bā·sən]
A reservoir without control gates for storing water over brief periods of time until the stream has the capacity for ordinary flow plus released water; used for flood regulation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
In a storm-sewer system, a basin for temporarily storing storm water during periods of peak downpour.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.