Novi sits at 909 feet on the rolling glacial moraine that separates the Rouge and Huron watersheds, and that history left behind heavy clay loam that holds water long after a storm passes. Subdivisions off Ten Mile and Beck Road, along with the wooded lots near Walled Lake and the newer builds toward Wixom and Northville, all wrestle with the same issue, which is compacted subsoil left behind by construction equipment. With roughly 33 inches of rain a year and Zone 6a winters, beds need shredded hardwood that knits together on slopes plus screened topsoil blends that loosen the clay. Decorative stone and drainage gravel are steady sellers around the Twelve Oaks corridor, where flat commercial grades push water toward the nearest low spot.