1 September 2021
George County: a drone video of the site of a fatal landslide triggered by Hurricane Ida
The landfall of Hurricane Ida across the southern USA earlier this week caused high levels of rainfall, inducing flooding and landslides. In terms of mass movements, one of the most significant events occurred in the Benndale community in George County in Mississippi, where a substantial failure destroyed a section of MS26. The landslide had substantial consequences – it killed two people and injured a further 10, three of them critically.
The SunHerald has a detailed article about the event, and has published a drone video of the aftermath. The site is quite interesting, as this overhead view shows:
The view below, also from the drone video, provides an understanding of the form of the landslide:
“It is a slide, which means the ground under the roadway and embankment was super-saturated and we can tell right now that’s what caused the slide,” said Kelly Castleberry, district engineer for the Mississippi Department of Transportation. “The ground liquified and it spread several hundred feet to the south.”
The road appears to be on embankment, which has failed.