1779. Colonel Thomas Hartley led the 6th Pennsylvania Regiment up the Sheshequin Path during the American Revolution. Hartley's expedition in 1778 preceded the Sullivan Expedition of 1779. Both Hartley and Sullivan were instrumental in claiming the frontier of Pennsylvania and New York for the forces of the Continental Army. As Hartley and his men passed through Lewis Township the Sheshequin path was widened. The widening of the path helped to open this area to settlement in the years following the Revolution. In 1839, the Williamsport and Elmira Railroad was built along the creek from Williamsport to Ralston, and was extended to the source of the creek and beyond to Elmira, New York, in 1854. The railroad was reorganized in 1860 as the Elmira and Williamsport Railroad, and came under the control of the Northern Central Railway in 1863, and later the Pennsylvania Railroad. U.S. Route 15 and Pennsylvania Route 14 were later built up the length of the creek. In 1972, flooding caused by Hurricane Agnes washed out several rail bridges and resulted in the abandonment of the railroad north of Hepburnville; the remainder was abandoned in 1986. There was severe flooding on Lycoming Creek on January 19 and 20, 1996, when a combination of heavy snow on the ground, heavy rains and subsequent melting, and ice dams led to flooding two feet higher than that seen in 1972 with Hurricane Agnes. Six people died as a result of flooding on Lycoming Creek in the greater Williamsport area, and there was millions of dollars of damage to property. See also List of rivers of Pennsylvania External links General reference Pennsylvania Department of Environmental Protection 2001 Pennsylvania Gazetteer of Streams Lycoming County Watersheds Map Official Lycoming County Map showing all townships, villages, boroughs, cities, county roads, rivers, creeks, and some streams Lycoming Creek Pennsylvania Game and Fish Commission description of Lycoming Creek Chesapeake Bay Program page on Lycoming Creek Watershed USGS Real Time Water Data for Lycoming Creek: Gauge near the creek's mouth at Williamsport Gauge upstream near Trout Run Lycoming County Stream Gauge Data for Lycoming Creek: Gauge at Hepburnville Gauge at Bodines Gauge at Ralston Gauge at Deer Crossing Gauge at Roaring Branch Information on the 1996 floods from the USGS Rivers of Lycoming County, Pennsylvania Rivers of Pennsylvania Rivers of Tioga County, Pennsylvania Tributaries of the West Branch Susquehanna River