Litter Clean up with WashCo Clean County Initiative Saturday, April 12, 2025 9:00 AM 12:00 PM 09:00 12:00 Riverbottom Park 124 W Salisbury St Williamsport, MD, 21795 United States (map) Google Calendar ICS Help collect trash at Riverbottom Park, Williamsport, MD (the boat ramp to the Potomac River)Gloves and bags are provided. Please wear sturdy shoes that may get dirty.