TL;DR
An underground downspout drain is a buried pipe run that picks up a gutter downspout at grade and carries roof water away from the foundation, discharging to daylight on a slope, a pop-up emitter in the lawn, or a dry well. Solid-wall PVC such as SDR-35 outperforms corrugated pipe underground because it holds grade, resists crushing, and can be cleaned with a jetter.
What it means
An underground downspout drain is a buried pipe run that picks up a gutter downspout at grade and carries roof water away from the foundation, discharging to daylight on a slope, a pop-up emitter in the lawn, or a dry well. Solid-wall PVC such as SDR-35 outperforms corrugated pipe underground because it holds grade, resists crushing, and can be cleaned with a jetter. Burial below frost concerns matters less than continuous fall, and a clogged or root-bound line quietly returns all that water to the basement wall it was meant to protect.
Where it sits in the glossary
Underground downspout drain is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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