In this diagram, we see a wide range of salinities (0.1 to 32), wave processes that dominate at the mouth of the estuary, tidal processes that occur in the middle region, and river or fluvial ...

The gale warning went into effect early Monday morning, and the NWS said it would stay in place until 4 p.m. on Monday, Feb. 17. The warning was issued for the tidal Potomac River. The tidal ...

WASHINGTON — Officials say the Potomac River is safe to navigate once again after a plane and helicopter collided mid-air near Ronald Reagan Washington National Airport (DCA) and crashed into ...

Wreckage from American Airlines flight 5342 is pulled from the Potomac River near Ronald Reagan National Airport on Monday.