Perimeter drainage checks align downspouts, French drains

https://www.ksnt.com/business/press-releases/globenewswire/9725427/ridgeline-outdoor-living-launches-premier-outdoor-living-and-landscape-construction-services-in-pasadena

Perimeter drainage checks align downspouts, French drains, and swales to steer water away from foundations and saturated beds, preventing root rot.