Atlantis Drainage Solutions solves this problem with PVC sewer and drainpipe in place of the non-recommended but commonly used corrugated pipe which can become easily clogged from leaves and roof debris.
PVC sewer and drainpipe has solvent welded watertight joints and a 3000 PSI crush factor. Each downspout connection has a clean-out access and we bubble-up into a 6” diameter diffuser over gravel pit. Designed and installed to last.
* Note: Black corrugated pipe not recommended due to easy clogging.