Landslides Triggered by the August 14, 2021, Magnitude 7.2 Nippes, Haiti, Earthquake
- At least 4,893 landslides were triggered by the earthquake and Tropical Cyclone Grace.
- 292 landslide dams were observed, 35 of which may warrant additional investigation.
- 116 landslides likely affected roads, with 4 of particular concern.
- Increased likelihood of flooding in watersheds with numerous landslides.
- Increased likelihood of rainfall-triggered landslides and aftershocks for several years.
The August 14, 2021, magnitude 7.2 Nippes, Haiti, earthquake triggered thousands of landslides on the Tiburon Peninsula, causing fatalities, damage, and impeding response efforts. This report presents an assessment of potential post-earthquake landslide-related geologic hazards for the Tiburon Peninsula and a preliminary map of the landslides triggered by the earthquake and subsequent rainfall from Tropical Cyclone Grace. The assessment is based on an emergency analysis of available post-earthquake satellite imagery, highlighting specific areas of concern that may benefit from detailed assessment and longer-term monitoring. Mapping efforts revealed at least 4,893 landslides were triggered across the Tiburon Peninsula, with hundreds of landslide deposits potentially restricting flow in rivers and streams and affecting roads.
How to cite
U.S. Department of the Interior; U.S. Geological Survey, Landslides Triggered by the August 14, 2021, Magnitude 7.2 Nippes, Haiti, Earthquake, accessed via HaitiDocs, https://www.haitidocs.org/doc/u-s-department-2021-landslides-triggered-august-14