This short abandoned line branches from an active CSX (ex-Baltimore & Ohio) line in Havre de Grace, MD, and heads north to the Conowingo Dam and power plant, located on the Susquehanna River. The line runs adjacent and parallel to the river for most of its length. Its sole purpose was to allow the Susquehanna Power Company to transport heavy equipment to the dam from its connection with the B&O. Dam construction was completed in 1928, ostensibly placing the date of abandonment of this line soon after.