The Sawyer River rises in the unincorporated township of Livermore, New Hampshire, on the eastern side of Hancock Notch, a pass in the Pemigewasset Wilderness between Mount Hancock to the north and Mount Huntington to the south.
The Sawyer River's source is located in the unincorporated town of Livermore, New Hampshire, situated on the eastern side of Hancock Notch, a passageway within the Pemigewasset Wilderness, connecting Mount Hancock to the south with Mount Huntington to the north.