What to do with torrents off the roof?
Zone 4A, East TN, annual rainfall >50″ and downpours can be significant. Upslope lot.
Downspouts will tie into 4″ pipe to daylight, but then what? Seems responsible to NOT discharge it down the driveway. But if I discharge it onto the slope it would soon create a local grand canyon.
There will be a 3′ garden wall to provide a level grade in front of the house. The 4″gutter drains will exit through that wall in two or three places.
Any tried and true remedies?
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