Potomac River flooding

Potomac River flooding has inundated, clockwise from upper left, Pennsylvania Avenue at 6th Street NW in 1889, the Navy Yard in 1936, East Potomac Park (before the Jefferson Memorial) in 1936, and Washington Harbour in Georgetown in 2010

Potomac River flooding has inundated, clockwise from upper left, Pennsylvania Avenue at 6th Street NW in 1889, the Navy Yard in 1936, East Potomac Park (before the Jefferson Memorial) in 1936, and Washington Harbour in Georgetown in 2010