North Branch Calvin Run

North Branch Calvin Run is a 2.47 mi long first-order tributary to Calvin Run in Greene County. This is the only stream of this name in the United States.

Course
North Branch Calvin Run rises about 2 miles southeast of Kirby, Pennsylvania and then flows southerly to join Calvin Run about 2 miles northwest of Mount Morris, Pennsylvania.

Watershed
North Branch Calvin Run drains 1.74 sqmi of area, receives about 43.1 in/year of precipitation, and is about 78.8% forested.