New England's second largest river system,
the Penobscot drains an area of 8,570 square miles. Its West Branch rises near Penobscot Lake on the Maine/Quebec border; the East Branch at East Branch Pond near the headwaters of the Allagash River. The main stem empties into Penobscot Bay near the town of Bucksport. The river is tidal from the base
of the Veazie Dam to its mouth near Bucksport (approx. 25 miles) and is brackish to the town of Hampden. The river's total fall from Penobscot Lake on the South Branch is 1,602 feet.