Georgetown is blessed with deep navigable rivers that historically served as the city's safest and easiest routes for trading. Four rivers flow together to form Winyah Bay: Sampit, Waccamaw, Pee Dee, and Black. Each river's name, with the exception of the Black River, derives from local Native American vernacular. In the 1930's, the Intra-Coastal Waterway was constructed by making use of the Waccamaw River and Winyah Bay. Georgetown's rivers not only served for transportation use, they are also home for the indigenous marine life and shore birds. Today these rivers are utilized by locals for recreational purposes such as fishing, hunting, and boating.