In the fall of 1775 then newly commissioned Colonel Benedict Arnold led a force of over 1000 men on a grueling trip through Maine, as part of the invasion of Canada.

Ascending the Kennebec in bateaux, they avoided the rapids of the lower Dead River via a portage of about 12 miles (20 km) at the "Great Carrying Place" (Carrying Place–Carrying Place Town, Maine Townships 1–2, Range 3, BKP WKR) to a position above Long Falls (now drowned in Flagstaff Lake).

Although improved highways and the trucking industry have replaced the river drive, water releases continue to serve hydroelectric power-generating plants downstream.

The majestic Bigelow Mountain Range looks down from Flagstaff Lake's southern shore, making the Dead River region a scenic favorite for outdoor enthusiasts.

The length of the run is 15 miles (24 km) from the put-in at Spencer Stream to the take-out at West Forks with no easy access by road.