The Wiswall Falls Mill Site (site 27-ST-38) is a historic archaeological industrial site in Durham, New Hampshire. It is located in John Hatch Park, a small public park just south of Wiswall Road on the eastern bank of the Lamprey River. The 3-acre (1.2 ha) site encompasses the remains of a small 19th-century mill complex. Included in this site are the foundational remnants of a sawmill, paper mill, dam, power canal, and a variety of ancillary structures. Significant industrial activity began here in 1835, when Moses Wiggin built a timber crib dam across the Lamprey River, and erected a sawmill. The power canal and paper mill were built in 1854 by Thomas Wiswall. The paper mill burned in 1883, and the sawmill was abandoned after flooding breached the dam. The remains of this dam are partia