Tucked into Greenhouse Park on the Stonycreek River outside Johnstown, this small built whitewater park serves up a handful of approachable wave features for beginners. It only really comes alive on scheduled dam releases out of the Quemahoning Reservoir, which the Benscreek Canoe Club typically runs on weekends from spring through fall. Most days you'll spot more SUPs than surfboards here, but a high-volume board can get up and ride when the flow cooperates. It's also home base for the Stonycreek Rendezvous festival each May, so expect company when a release lines up with the event.