Huge landslide on California’s Big Sur coast continues to change

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The Mud Creek landslide on California’s Big Sur coast keeps eroding.

The Mud Creek landslide on California’s Big Sur coast keeps eroding, as seen in air photos taken June 26. USGS scientists have been collecting and analyzing air photos about every two weeks, weather permitting, since the slide occurred on May 20. Maps derived from the June 26 photos show continued movement on the slide’s upper slopes and accelerating erosion at its toe. Since May 27, the 13-acre bulge of new land created by the slide has lost about 2 acres to wave erosion at its seaward edge, while material has accumulated on the beaches beside it. The latest photos also captured new roads built by the California Department of Transportation (Caltrans) to monitor and sample the slide.

3D flyover view of Mud Creek slide

(Public domain.)

View provisional imagery at the USGS Remote Sensing Coastal Change website. 

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Date published: May 31, 2017
Status: Active

Big Sur Landslide

On May 20, 2017, the steep slopes at Mud Creek on California’s Big Sur coast, about 140 miles south of San Francisco, suffered a catastrophic collapse. USGS Scientists from the Pacific Coastal and Marine and the Geology, Minerals, Energy, and Geophysics Science Centers are monitoring this section of the coastline, in collaboration with the California Department of Transportation.