Wharton Fill is one of a number of fills (embankments) on the Lackawanna Cut-Off railroad line in northwest New Jersey. Located between mileposts 51.1 and 51.6 in Byram Township, the fill was constructed between 1908 and 1911 by contractor David W. Flickwir. The fill, which was created by placing fill material obtained by blasting with dynamite or other methods, is about 0.5 miles (0.64 km) long. Most of the material that was used to create Wharton Fill was excavated from the surrounding low-lying area through which Pumpkin Run runs; several of the borrow pits have since flooded and become ponds.