Earth Day Community Connection Hike with Hike+Heal // February 25, 2026 Celebrate Earth Day by Giving Back to Philadelphia’s Green Spaces Events // April 10, 2025 Earth Day Bells Mill Road Clean-Up // January 30, 2025 Taking Care of our Planet is a Lifelong Investment News // April 19, 2023 From the Director’s Notebook: Investing in the Wissahickon News // April 20, 2022 From The Director’s Notebook: Every Day is Earth Day Conservation // April 21, 2021 What Does The Wissahickon Do For Us? News // April 22, 2020