The Jim and Mary Lee Museum is located in Warren County's beautiful Port Warren Park, a premiere site along the historic Morris Canal Greenway. In use from the 1820s to the 1920s, the historic Morris Canal stretched from the Delaware River in Phillipsburg to the Hudson River in Jersey City. In its over 100 mile length it went through elevation changes totaling some 1,674 feet. A system of locks and inclined planes were used to overcome these elevation changes. In doing so, the canal became known as the "Mountain Climbing Canal" and was a major engineering feat of its day.
Overlooking the Lopatcong Creek and Port Warren Heritage Area, the Jim and Mary Lee Museum sits atop Inclined Plane 9 West - the longest plane on the entire Morris Canal with an elevation change of 100 feet. Inside the historic Planetenders House and former home of the late James S. Lee, Sr., a noted Morris Canal author and historian, the museum offers an impressive collection of Morris Canal artifacts.
There are numerous other historical artifacts which can be found in the grounds around the museum, including many sleeper stones, the cable that once towed the canal boats, and remains from the powerhouse. The most distinguishing features of this site, however, are the tailrace, turbine chamber, and turbine, which remain intact. Not only can this unique turbine be viewed from above, but volunteers James Lee, Jr. and his son, an archeologist, lead guided tours through the underground tail race to offer a one of a kind view the turbine.
Located on at 477 County Route 519 in Stewartsville, the Jim and Mary Lee Museum is owned by the County of Warren and managed in partnership with the Highlands Community Service Project, the New Jersey Youth Corps, the Warren County Parks Foundation, and the Morris Canal Committee.