Grant will add rain gardens, trees to reduce erosion in Arlington stream

Arlington County has received a grant to mitigate erosion at Grandma’s Creek, a beloved stream in the Barcroft neighborhood. The National Fish and Wildlife Foundation awarded the county about $280,000 to help build rain gardens and plant more trees to slow the speed of rainwater runoff — excess water that builds up during storms and can carry pollutants. The county also plans to contribute matching funds. “What our goals are with runoff is slow it down, spread it out and soak it … into the ground,” said Lily Whitesell, a...