(DC) (Rock Creek Conservancy) Join Rock Creek Conservancy, the National Park Service, and National Links Trust for a litter removal restoration event in Rock Creek Park. Trash is the visible form of stormwater pollution, a major threat to water quality and park health and its removal makes the parklands cleaner, safer, and more beautiful for all. This event is part of the Annual Rock Creek Extreme Cleanup – a month-long push to remove litter throughout the Rock Creek watershed!