Sassafras River in the context of "Elkton, Maryland"

The Chester River is a major tributary of the Chesapeake Bay on the Delmarva Peninsula. It is about 43 miles (69 km) long, and its watershed encompasses 368 sq mi (950 km), which includes 295 sq mi (760 km) of land. Thus the total watershed area is 20% water. It forms the border between Kent County and Queen Anne's County, Maryland, with its headwaters extending into New Castle County and Kent County, Delaware. Chestertown, the seat of Maryland's Kent County, is located on its north shore. It is located south of the Sassafras River and north of Eastern Bay, and is connected with Eastern Bay through Kent Narrows.

The Chester River begins at Millington, Maryland, where Cypress Branch and Andover Branch join together. It ends at the Chesapeake Bay in a very wide mouth between Love Point on Kent Island, and Swan Point, near Gratitude, Maryland. Cypress Branch rises in southwestern New Castle County, Delaware, and Andover Branch, with its tributary, Sewell Branch, rises in northwestern Kent County, Delaware. Millington is the head of navigation. Sewell Branch and Andover Branch join in a private impoundage of approximately 30 acres (120,000 m) about two miles (3 km) above joining with Cypress Branch and then becoming the Chester River.

The Elk River is a tidal tributary of the Chesapeake Bay on the Eastern Shore of Maryland and on the northern edge of the Delmarva Peninsula. It is about 15 miles (24 km) long. As the most northeastern extension of the Chesapeake Bay estuary, it has served as one entrance to the Chesapeake & Delaware Canal since the 19th century. The canal and river now serve as one boundary of the Elk Neck Peninsula. The river flows through Cecil County, Maryland, with its watershed extending into New Castle County, Delaware and Chester County, Pennsylvania. Elkton, the county seat of Cecil County, is located at its head. Its total watershed area is 143 square miles (370 km) (including the Bohemia River), with 21 square miles (54 km) of open water, so its watershed is 15% open water. It is south and east of the North East River, and north of the Sassafras River.