Level spreader

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Illustration of a level spreader designed to infiltrate road drainage

A level spreader is an erosion control device designed to reduce water pollution by mitigating the impact of high-velocity stormwater surface runoff. It is used both on construction sites and for permanent applications such as drainage for roads and highways. The device reduces the energy level in high-velocity flow by converting it into sheet flow, and disperses the discharged water so that it may be infiltrated into soil. [1] [2]

Level spreaders may be used in conjunction with runoff infiltration devices such as bioretention systems, infiltration basins and percolation trenches.

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Installation of a level spreader
  1. ^ U.S. Army Corps of Engineers. Construction Engineering Research Laboratory. Champaign, IL. "Level Spreader." USACERL Special Report 107-98. Accessed 2009-04-09.
  2. ^ Massachusetts Department of Environmental Protection. Boston, MA. "Erosion and Sediment Control Guidelines for Urban and Suburban Areas." May 2003. p. 109.