The Clarion is a tributary to the Allegheny River, itself a wild and scenic river, joining it in Clarion County just south of the town of Emlenton. In the early 1800's, the Clarion was used to transport timber to the Allegheny River. The steeply forested hillsides of almost continuous mature deciduous and coniferous vegetation contribute to a feeling of remoteness in many places along the river.
Although regulated by the Army Corps of Engineers, streamflow is sufficient to accommodate recreation uses such as canoeing, fishing, and swimming in the Clarion River year-round downstream from Ridgway to the backwater of Piney Dam.
Recreational section with deep channels and shallow riffles, railroad trestle, and small communities.