ROCK OUTLET PROTECTION

Definition

Rock placed at the outfall of channels or culverts.

Purpose

To reduce the velocity of flow in the receiving channel to non-erosive rates.

Conditions Where Practice Applies

This practice applies where discharge velocities and energies at the outlets of culverts are sufficient to erode the next downstream reach. This applies to outlets of all types such as sediment basins, stormwater management ponds, and road culverts. 

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