The Ledge sits on a quiet stretch of the Blackfoot River near the small community of McNamara, upstream of Missoula on the same free-flowing river made famous by A River Runs Through It. Like most of the Blackfoot, it's undammed, so this beginner-friendly natural wave is really a spring-runoff phenomenon that fades once the snowmelt tapers off. It's remote enough that detailed reports are scarce, so plan on scouting it yourself rather than relying on secondhand beta. If you're floating this section anyway for the scenery or the fishing, it's worth timing the trip to catch the wave while it's actually in.