The Passadumkeag River (Penobscot: pñsÃÂtñmkik, "at the land beyond the gravel bar") is a river in Maine. From the confluence of its East Branch and West Branch () in Maine Township 3, Range 1, NBPP, the river runs south and west to its mouth on the Penobscot River in Passadumkeag.
From the outflow of Weir Pond () the stream runs south to its confluence with the West Branch.
From the outflow of Number 3 Pond () the stream runs southeast to its confluence with the East Branch.
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