ANNAPOLIS, MD (AP) – The Chesapeake Bay watershed has received an overall grade of C+ on its latest report card. Last year’s status is a slight improvement over previous years, according to the report released by the University of Maryland Center for Environmental Science. The Chesapeake Bay health score improved slightly from 45 to 50, a grade of C. The center’s president, Dr. Peter Goodwin, said the health of the bay is a reflection of what is happening across its watershed, which includes PA, Delaware, Maryland, New York, Virginia, West Virginia, and the District of Columbia.