Delaware | Flag, Facts, Maps, & Points of Interest | Britannica

Delaware, located mainly within the Atlantic Coastal Plain, is second only to Florida for having the lowest average elevation. A long sand beach forms the state’s oceanfront, stretching from the border with Maryland, at Fenwick Island, north to Cape Henlopen, at the mouth of Delaware Bay.Only one major break, Indian River Inlet, occurs along the 23-mile (37-km) length of the beach.

https://www.britannica.com/place/Delaware-state