Environmentalists, government officials and academics are gathering at the University of Delaware for a two-day meeting to discuss issues involving the Delaware River watershed. Gov. Jack Markell was scheduled to deliver Monday's keynote address at the Delaware River Watershed Forum gathering. Congressman John Carney and National Wildlife Federation President Collin O'Mara also were scheduled to attend the third annual event. Copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.