The annual clean up of Difficult Run stream valley will be held on April 9 from 9 a.m. until noon. Sponsored by the Great Falls Citizens Association (GFCA), this annual clean up is part of an annual, region-wide cleanup of the Potomac River watershed. Adults and middle and high school students are encouraged to participate. Work gloves and plastic bags will be provided. In addition, participants will have a scenic spring hike along the relatively flat Difficult Run stream valley between Georgetown Pike and Route 7. Get some fresh air and exercise while improving your community. To register and obtain directions, contact Bill Canis with GFCA, bcanis@yahoo.com.