Portage is a town in the southwest corner of Livingston County, New York, USA. The town is near the south end of Letchworth State Park. The name of the town stems from the need to portage (carry) canoes around the falls of the Genesee River.
The town was first settled around 1810. Portage was formed from part of the town of Nunda in 1827.
The "High Bridge at Portage," built in 1853, was once considered an engineering wonder for wood construction. It was destroyed by a fire in 1875. That same year the bridge was rebuilt in iron according to a design by the railroad engineer Octave Chanute, who later became a pioneer of aviation. The iron bridge still stands today.