Jacobs Creek is a long 2nd order tributary to the Monongahela River in Fayette County, Pennsylvania.
Jacobs Creek rises about 1.5 miles northwest of Shoaf, Pennsylvania, and then flows southwest to join the Monongahela River at Martin.
Jacobs Creek drains of area, receives about 42.9 in/year of precipitation, has a wetness index of 340.19, and is about 58% forested.