ANNAPOLIS, MD (AP) – The nation’s largest estuary is still getting a D-plus grade for its overall health. That’s according to a report released by the Chesapeake Bay Foundation. While the overall grade for the bay remained the same from the last report two years ago, this year’s score dropped one point. The group says that’s largely due to ineffective management of the striped bass population. The foundation says efforts must be accelerated to implement practices by 2025 that will reduce pollution enough to restore water quality to local rivers, streams, and the bay.