From Bird Watching in New Hampshire , p. 102

North Mill Pond is a tidal inlet of the Piscataqua River in Portsmouth. It covers an area of about 150 acres and has a maximum depth of 10 feet. The pond is home to a variety of wildlife, including fish, birds, turtles, and otters. The pond also provides recreational opportunities for residents and visitors, such as kayaking, fishing, and birdwatching. North Mill Pond is part of the city's historic district and has several landmarks along its shores, such as the North Mill Bridge, the Hill House Museum, and the Portsmouth Naval Shipyard.

The city has plans to create a linear greenway and community park along the North Mill Pond. The greenway will include a multi-use path for use by bicycles and pedestrians extending from Bartlett Street to Market Street with a brief on-road portion along Maplewood Avenue. Between Bartlett Street and Maplewood Avenue, the greenway will include scenic lookouts and seating areas along the path. Between Maplewood Avenue and Market Street, the greenway will include a one-acre community park accessible from Vaughan Street via a public access easement across private property. With the exception of the one-acre community park, all of the land in the proposed linear greenway is currently owned by private entities and will require land easements or acquisition by the City. For this reason, the construction of this greenway and park is anticipated to be done as a public/private partnership.