Frew Mill (aka Kennedy Mill)

Frew Mill is a whitewater put-in on Slippery Rock Creek in Lawrence County, Pennsylvania, situated in a region with significant gradient and flow characteristics. The creek at this location is a large river system with an average flow of 611 cubic feet per second and an average gradient of 11.2 feet per mile, indicating moderate to fast-moving water suitable for whitewater paddling. With an average velocity of 2.13 feet per second and a drainage area of 408 square miles, this is a well-established waterway that receives substantial water volume, making it a reliable choice for paddlers seeking consistent flow conditions.

The Slippery Rock Creek system spans 51.39 miles and drops 576 feet in total elevation, creating varied conditions throughout the watershed. At the Frew Mill access point, paddlers can expect the characteristics of a large river with good water volume and current. The site's classification as a Stream Order 6 waterway indicates it is a significant tributary, supporting sustained paddling opportunities. This put-in serves as an entry point into a section of creek with the hydrological characteristics typical of the mid-Appalachian region, where gradient and seasonal flow patterns influence paddling conditions throughout the year.