The United States Geological Survey (USGS) and Dewberry, a privately held professional services firm, have jointly released a new topobathymetric lidar dataset for the Potomac River, extending from ...

Data gathered about the bacteria levels in local river water have put several swimming and boating spots in the “safe” category on a national water safety registry. The Potomac RiverKeeper Network ...

The U.S. Geological Survey measured water from the Washington Aqueduct, a federal agency that treats Potomac River water and sends it to the District, Arlington County and Falls Church. It found ...

The USGS attributes the improvement to the reduction of nitrogenous waste being dumped into the Potomac. They found a negative correlation between the levels of nitrogen present in the river and the ...