The Cross River is a 5 miles (8 km) tidal river in Maine

Maine

Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

. It is a tributary of the Sheepscot River

Sheepscot River

The Sheepscot River is a river in the U.S. state of Maine. Its lower portion is a complex island estuary with connections to the Kennebec River downstream of Merrymeeting Bay.-Route:...

.

The Cross River begins in the town of Boothbay

Boothbay, Maine

Boothbay is a town in Lincoln County, Maine, United States. The population was 2,960 at the 2000 census. It includes the villages of East Boothbay and Trevett. The Boothbay region is a center of summer tourist activity, and a significant part of its population does not live there year...

 and runs north. Turning west, it becomes the boundary between Boothbay and Edgecomb

Edgecomb, Maine

Edgecomb is a town in Lincoln County, Maine, United States. The population was 1,090 at the 2000 census. The town was named for Lord Edgecomb, a supporter of the colonists...

 and continues to the Sheepscot River, at the three-way town boundary intersection between Boothbay, Edgecomb, and Westport.