The region around Linn Run is currently facing concerns related to river flooding, which poses a threat to the local trout populations and the surrounding ecosystem. Linn Run, a mountain stream flowing through Forbes State Forest and Linn Run State Park, extends into Loyalhanna Creek in Ligonier Township and is being closely monitored for potential impacts. The Forbes Trail Chapter of Trout Unlimited is actively involved in efforts to protect the native trout populations, which are vulnerable to changes in water levels caused by flooding.