With the most powerful rainstorm of the season set to soak Southern California on Thursday, the first assessment of mudslide danger since the January firestorms shows that both the Pacific ...

Throughout Southern California, the bases of mountain ranges are strewn with the effluent of past debris flows — called alluvial fans — and cities in the sprawling Los Angeles basin have been ...

Throughout Southern California, the bases of mountain ranges are strewn with the effluent of past debris flows — called alluvial fans — and cities in the sprawling Los Angeles basin have been ...

This is what a small debris flow looks like. A swelling torrent of mud and boulders descends a small canyon over the Las Lomas debris basin in Duarte, Calif., which is located just a few ...

County storm preparedness actions include: — Debris Basin and Flood Control Maintenance ... to slow runoff and prevent ...

To aid with the assessment of the Biscuit Basin hydrothermal explosion, Yellowstone Volcano Observatory scientists installed ...

Throughout Southern California, the bases of mountain ranges are strewn with the effluent of past debris flows — called alluvial fans — and cities in the sprawling Los Angeles basin have been built on ...