Volunteers are needed for Delaware’s largest urban cleanup: the Christina River Watershed Cleanup. This takes place on Saturday, April 8, from 8 to 11 a.m. Over a dozen sites are available in greater Newark, New Castle, and Wilmington. Among these is the “Riverfront Wilmington” site, which the Partnership for the Delaware Estuary is managing. Visit ChristinaRiverCleanup.org to register, or call (302) 307-2757. This event is free and children are welcome.