The survey was conducted using Teledyne Optech CZMIL SuperNova lidar system, which allowed Dewberry to successfully survey a 55-mile (88.5km) stretch of the Potomac River, spanning from Hancock, ...

When it rains in Alexandria, it can literally pour millions of gallons of raw sewage into the Potomac River. That because in areas of Alexandria, mainly Old Town, the sewer system dates back to ...