Question: Mahanoy Creek is a 51.6 mi tributary of the Susquehanna River, in Northumberland and Schuylkill counties, Pennsylvania, a major river located in the northeastern region of which country?
Sentence (from "Susquehanna River"): The Susquehanna River ( ; Lenape: Siskëwahane) is a major river located in the northeastern United States.
Relevant evidence: Yes