Nichols Run is a long first-order tributary to Tunungwant Creek.
Course Nichols Run rises about west of Harrisburg, New York in Cattaraugus County and then flows northwest to meet Tunungwant Creek in Limestone, New York.
Watershed Nichols Run drains of area, receives about of precipitation, and is about 85.32% forested.
See also List of rivers of New York
References