Important geographical features, in addition to the Christina River and Brandywine Creek, include the Delaware River, which forms its eastern boundary, Naaman's Creek and Shellpot Creek. It is mostly in the piedmont region with one of the more dramatic sections of the Fall Line being close enough to the Delaware River to allow many scenic views. Ebright Azimuth, the highest natural elevation in the state at (, is located along the northern edge of Brandywine Hundred, very close to the Pennsylvania line.