[2] Portions of the Mahoning Creek watershed fall in Armstrong, Jefferson, and Indiana counties.

Mahoning Creek flows west through Pennsylvania and joins the Allegheny River just upstream of Templeton.

Mahoning Creek traverses the following political subdivisions, listed in order of encounter traveling downstream, East Branch Mahoning Creek traverses the following political subdivisions, listed in order of encounter traveling downstream.

Little Mahoning Creek traverses the following political subdivisions, listed in order of encounter traveling downstream.

Pine Run traverses the following political subdivisions, listed in order of encounter traveling downstream, Download coordinates as: