Are you looking for a river cleanup to volunteer at with family and friends in the Rockville, Maryland area? Then look no further than the Adopt a Stream: Annual Potomac River Watershed Cleanup, which takes place on Saturday, April 9. There are multiple Annual Potomac River Watershed Cleanup locations, including the Twinbrook Community Recreation Center at 12920 Twinbrook Parkway from 9:30 to 11 a.m., Maryvale Park at 812 First Street from 10 a.m. to noon, and Croydon Creek Nature Center at 852 Avery Road from 10 a.m. to noon. Individuals, community groups, businesses, and families can adopt a stream in Rockville and organize cleanups to help keep the river, streams, and other waterways stay clean of litter and other contaminants. Even a fairly small volunteer group can get rid of big amounts of debris and contaminants from streams in a fairly short time period. Your group can participate in a one-time cleanup or formally adopt a stream.