Lefferts Tide Mill, Huntington Harbor, Southdown Road, Huntington, Suffolk County, NY

Significance: The Lefferts Mill is a fine example of a tide mill, a relatively rare engineering structure. It is also important as an example of a typical Long Island water-powered grist mill in its equipment, process, and economic niche within the Island's history of gristmilling. Built around 1795, the Lefferts mill was operated until the 1870s. The changes made in its machinery during its useful lifetime, as well as during its economic decline, reflect changes taking place in the grain and flour industry of Long Island during those eighty years.
Unprocessed Field note material exists for this structure: FN-12
Survey number: HAER NY-106
Building/structure dates: ca. 1795 Initial Construction
Building/structure dates: 1870- 1879 Subsequent Work