[1] The river rises in the northeast corner of Fremont and flows east across flat, swampy terrain through the town of Epping.
A small pond which was used to unload and turn barges is located at the base of a rapids just downstream from the ruins of Neal's Mills, between Piscassic Road bridge and the B&M railroad bridge in Newfields.
A mule track runs along the northwest bank of the Piscassic downstream from the turning pond.
A wooden icehouse once stood adjacent to the ice pond, just east of the dam.
It had a wooden and iron conveyor leading from the pond to a point a door about 15 feet above the ground.