Patio Design and Drainage for a V-Shaped Backyard Slope

A V-shaped backyard sloping 10 feet from the house with a central low point and mysterious black drainage pipes requires careful analysis before patio installation. The yard appears relatively flat in photos, but subsurface drainage must be addressed first.

Identify the black pipes—they're likely foundation drains or downspout outlets. Any patio needs minimum 1/4 inch per foot slope away from the house. Pavers offer better drainage flexibility than solid concrete.

Options: regrade to create a subtle crown directing water to perimeter drains, install a French drain system along the low point, or create a rain garden at the collection point with water-tolerant plants.

Document water flow during heavy rain. A landscape architect can design a integrated solution combining patio, drainage, and planting for a functional, beautiful result.