I have created a page on my site www.landscapenashville.com that has pictures and a description of a Dry Creek Bed as a solution for steep areas for drainage. Dry creek Beds are decorative and solve drainage problems at the same time. Someone may have a small grand canyon where the water is eroding the soil away and now a dry creek bed can be a solution that stops the eroding, and is a decorative landscape feature on their property. The page with this information is
www.landscapenashville.com/dry-creek-bed-middle-tn.html
Thank you