Subsurface Drain
Definition:   A conduit, such as tile, pipe, or tubing, installed beneath the ground surface which collects and/or conveys drainage waer.

Purpose:    To improve the soil environment for vegetative growth by regulating the water table and groundwaer, alleviating seepage problems; and to remove surface runoff.

Conditions Where Practice Applies:
     When included n the design of a Grassed Waterway, to be constructed in areas having prolonged flows, a high water table, or seepage problems.
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