A massive landslide closed Highway 410 west of Naches on Sunday. The slide, which destroyed at least two homes, cut power lines, and changed the course of the Naches River, might continue to advance for several more days. To find out more about the highway closure and see photos, go the Washington Department of Transportation’s Flickr page. The Yakima Herald-Republic has unedited video from a helicopter on Sunday.
Landslides are among the geologic hazards found in Washington State. In 1998, the Aldercrest-Banyon landslide (near Kelso) damaged or destroyed 138 homes and accounted for $30-40 million in losses. Among the people who will examine this landslide and why it happened are geologists from DNR’s Division of Geology and Earth Resources. DNR monitors, maps, and researches landslides to help government and private sector planners figure out ways to prevent or at least mitigate landslides that would be hazards to roads, structures, power lines and other infrastructure.
Our web page explains how you can report a landslide–big or small.