Infiltration chambers: Gallery

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  Infiltration chambers being installed.

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  Chamber systems can be very large, both in terms of depth and footprint...

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  ...or very small as this residential soakaway/dry well.

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  Parking lot stormwater detention system, partially installed. Photo credit: Arbitrarily0

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  Contractors construct an underground soakaway on the runway extension of Taxiway Alpha as shown here Oct. 5, 2012, at RAF Mildenhall, England. Photo credit: Karen Abeyasekere

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  Infiltration chambers being installed.

An underground water storage reservoir into which stormwater is directed and allowed to percolate into the underlying native subsoil.

An excavated area lined with geotextile filter cloth and filled with clean granular stone or other void forming material, that receives runoff and allow it to infiltrate into the native soil; can also be referred to as infiltration galleries, French drains, dry wells or soakaway pits.

The temporary storage of stormwater to control discharge rates, and allow for sedimentation.