Geography

Corning is located at 42°8′53″N 77°3′25″W (42.148142, -77.05697).^[10]
According to the United States Census Bureau, the city has a total area of 3.3 square miles (8.5 km²), of which, 3.1 square miles (8.1 km²) of it is land and 0.2 square miles (0.4 km²) of it (5.18%) is water.
Just upstream from Corning, the Cohocton River and the Tioga River merge to form the Chemung River which flows through downtown. The river was an important source of power in the early history, and is part of the attractiveness of the region today. The river is prone to floods, as rain water runs off quickly from the steep hillsides of the area, the worst recent flood being in 1972, as the remnants of Hurricane Agnes dropped fifteen or more inches of rain in the area within a short time. Eighteen people were killed in the immediate Corning-Painted Post area. The entire downtown area was flooded, with severe damage. Downtown has been refurbished and has become somewhat gentrified.
Flooding is now controlled by a system of dams upstream from Corning.
Interstate 86 (the Southern Tier Expressway), New York State Route 17, New York State Route 352, New York State Route 414, and New York State Route 415 are major highways connecting in Corning. County Road 40 leads into the city from the south and County Road 41 from the north. U.S. Route 15 proceeds southward from Painted Post, west of Corning.