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retention basin
From Wiktionary, the free dictionary
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English
Noun
retention basin (plural retention basins)
- (hydrology, soil science) A depression in the ground containing a permanent pool of water that is replenished by rainwater which would otherwise cause flooding or erosion, which releases the water at a slow rate into the ground or other nearby water bodies.
- Synonym: retention pond
- Coordinate terms: detention basin, infiltration basin
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