Internal drainage
Revision as of 21:57, 22 July 2007 by Kdanneberger (talk | contribs)
1. The downward movement of water into, through, and out of the soil profile, which may be enhanced by means of an installed drain system. See also Drainage.
SMART DRAIN™ is commercial example of an internal drainage system.
Source: http://www.smartdrain.com/athletic_fields.asp