Flooding

Runoff from small streams into progressively larger rivers will continue the flooding risk through the weekend and beyond in some locations.

Rain and snowpack have contributed to flood warnings for parts of the Merrimack River in Massachusetts, tributaries of the Red River in North Dakota and Rock River in Wisconsin.

U.S. taxpayers are bailing out flood insurance, and climate change is making the problem worse.

Earthquake fault location can maximize the power of tsunami waves.

NASA's Mars Reconnaissance Orbiter used radar to find the underground Martian channels.

People are urged to use extreme caution and avoid approaching swift flowing rivers.

Huge oyster beds, now gone, once protected America's shorelines.

Sandy beaches and bars transform in a series of images snapped by remote cameras during a Grand Canyon flood.

Scientists push off on raft trip to gauge flood's effects.

The Colorado River fountained in a flood from the Glen Canyon Dam today, hopefully restoring beaches and fish habitat downstream.