Local, state and federal officials have implemented safety measures to protect the burn scar areas from debris flows and ...

Some of the debris from Altadena was taken to a Tujunga neighborhood, sparking anger and frustration from residents.

Mark Liu shares time-lapsed views of various debris basins throughout the region during the rain.

The city of Sierra Madre issued mandatory evacuation orders for homes directly below the Sierra Madre and Lannan debris basins. Evacuation warnings have been issued for other hillside-adjacent ...

The first storm was a precursor for a stronger storm set to bear down on the region Wednesday into Thursday, forecasters said ...

With little vegetation left to hold the mountainsides up, the danger is that mudflows could overfill debris basins with any significant rain, said Sierra Madre Fire Chief Brent Bartlett.

Waste generated by human activities has now reached the deepest point in the Mediterranean: the 5,112-meter-deep Calypso Deep ...

The city of Sierra Madre issued mandatory evacuation orders for homes directly below the Sierra Madre and Lannan debris basins. Evacuation warnings have been issued for other hillside-adjacent ...

These stormwater crews must ensure that the county's network of dams, debris basins, channels, and storm drains are up to the task. Emergency teams from multiple agencies have cleared out flood ...

When mountain permafrost thaws and glaciers melt, glacial lakes can become lethal flood risks for anyone downstream.