What is a landslide?
A landslide is a natural event where a mass of rock, earth, or debris moves down a slope. Landslides can be triggered by various factors such as heavy rainfall, earthquakes, volcanic activity, or human activities like deforestation and construction. Landslides can cause significant damage to property, infrastructure, and can even result in loss of life.
The British Geological Survey (BGS) actively monitors and assesses these events to provide crucial information and advice to local authorities and the public. The BGS also maintain the National Landslide Database, which has recorded over 18,000 landslides across Great Britain. Which you can learn about following the link below:
In Hampshire, landslides can occur in areas with steep slopes and coastal cliffs. Heavy rainfall and coastal erosion are common triggers. For example, the cliffs along the south coast, such as those near Barton-on-Sea and Hordle Cliff, are particularly susceptible to landslides due to ongoing erosion and weathering.
The Isle of Wight is especially prone to landslides, with notable incidents occurring in areas like Ventnor. In December 2023, there was a significant landslip in Bonchurch, Ventnor, which forced the evacuation of 20 homes and caused substantial damage.
Local risk rating: High
What does the Local Resilience Forum do to prepare?
The Local Resilience Forum have plans in place for evacuation and shelter to support affected residents where required.
Associated risks
- Storms and gales
- Groundwater flooding
- Surface water flooding
How can you prepare?
Before a Landslide
Know Your Risk: Determine if your area is prone to landslides by checking local maps and consulting with local authorities
Create an Emergency Plan: Develop a family emergency plan that includes evacuation routes and a communication strategy
Build an Emergency Kit: Include essentials like water, food, medications, a flashlight, batteries, and important documents
Stay Informed: Sign up for local alerts and weather updates to stay informed about potential landslide conditions
Landscaping: Plant trees and shrubs on slopes to help stabilize the soil. Avoid building near steep slopes, close to mountain edges, or near drainage ways
Ensure you have insurance to cover landslides
During a Landslide
Stay Alert: Listen for unusual sounds like trees cracking or boulders knocking together, which may indicate moving debris
Evacuate Immediately: If you suspect a landslide, evacuate immediately to higher ground. Do not wait for an official warning
Avoid River Valleys and Low Areas: These areas are more likely to be affected by landslides
After a Landslide
Stay Away from the Slide Area: Additional slides may occur. Avoid the area until authorities declare it safe
Report Broken Utility Lines: Contact the appropriate authorities to report broken water, gas, and sewage lines
Replant Damaged Ground: Replanting can help prevent future landslides and erosion
Take photos of any damage and contact your insurance provider
Helpful links and resources
Isle of Wight - Landslides and ground movement
This page provides information and updates on landslides on the Isle of Wight.
