what is riprap
Riprap DefinitionRiprap is a permanent cover of rock used to stabilize streambanks, provide in-stream channelstability, and provide a stabilized outlet below concentrated flows.This BMP addresses using riprap to stabilize streambanks, line channels and provide stable out-lets.ll bare soil on the slope above the riprap should be stabilized with seed and mulch, or sod.See the Vegetative BMPs.3. When riprap is used in conjunction with other vegetative practices or bioengineering, theriprap should extend 1 foot above the ordinary high water mark.