The first Wissahickon Creek Clean Up was held in 1970 to coincide with the first Earth Day. Join us in celebrating both events by volunteering to help clean the Wissahickon Creek, its tributaries and local trails. This is the perfect outdoor event to show your support and love for a clean Wissahickon watershed. All volunteers choose a pre-assigned section of the Creek, its tributaries or the trail. Registration, the list of sections, maps, and parking information can be found at wissahickontrails.org.