Riddle Run is a tributary of the Allegheny River located in Allegheny County in the U.S. state of Pennsylvania.
Course
Riddle Run joins the Allegheny River at the borough of Springdale.
See also
List of rivers of Pennsylvania List of tributaries of the Allegheny River Rachel Carson was born and raised in Springdale.
References
External links
U.S. Geological Survey: PA stream gaging stations