Disclaimer

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely science to assess ongoing hazards. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.

Description

Rainfall from Hurricane Maria triggered landslides in the mountainous areas of Puerto Rico. We are examining high-resolution optical satellite imagery to identify locations of roads, other infrastructure, and buildings impacted by landslides. We estimate the accuracy of impact locations to be approximately 100 m (328 ft) based on comparison of preliminary post-storm with pre-storm images. That is, the point locations provided in the database are accurate to only within a 100 m (328 ft) of their actual locations on the ground. The inventory of landslide impacts is likely incomplete even for areas where imagery is available because some impacts may be obscured by clouds, vegetation, or shadows. The purpose of this report and accompanying geospatial data is to assist response and recovery efforts.

The geospatial database is comprised of polygons outlining the extent of currently available imagery, points showing the locations of landslide impacts, and polygons defining a 100 m (328 ft) buffer around point locations are provided as part of the geospatial database to provide information on estimated location accuracy. Points show the locations of roads and other transportation infrastructure, facilities and buildings undermined by landslides, buried in landslide debris, or otherwise impacted by landslides at the time of the collection of the satellite imagery.

The report and geospatial data are incomplete, but will be updated as additional imagery becomes available.

Download GeoDatabase, Metadata, and Readme Files (ZIP file)

Excerpt of satellite image showing landslide impacts to Highway PR-431 and houses near the Rio Blanco in the Lares Municipality. Points identify the approximate location of roads and buildings visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location.
Excerpt of satellite image showing landslide impacts to PR-357 near the Río Rosario in the Maricao Municipality. Points identify the approximate road locations visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location.
Excerpt of satellite image showing landslide impacts to roads in the Lares Municipality. Points identify the approximate road locations visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location.
Excerpt of satellite image showing landslide impacts to Highway PR-444 and buildings in the Moca Municipality. Points identify the approximate location of roads and buildings visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location.
Excerpt of satellite image showing landslide impacts to Highway PR-109 and buildings in the Anasco Municipality. Points identify the approximate location of roads and buildings visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location.
Excerpt of satellite image showing landslide impacts near Highway PR-406 and buildings in the Anasco Municipality. Points identify the approximate location of roads and buildings visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location.
Excerpt of satellite image showing landslide impacts to a road in the southeast corner of Las Marias Municipality. Points identify the approximate location of roads visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location.
Excerpt of satellite image showing landslide impacts to roads, agriculture, and a reservoir in the Lares Municipality. Points identify the approximate location of roads visibly impacted by landslides. Image filename contains approximate latitude and longitude of this impact location.