Scoop has an Ethical Paywall
Work smarter with a Pro licence Learn More

Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 

New Guidance Encourages Planners Not To Let Landslide Risk Reduction Opportunities Slip By

Today GNS Science has released new land-use planning guidance to manage and reduce the risks of landslides.

The Landslide Planning Guidance: Reducing Landslide Risk through Land-Use Planning strongly encourages landslide risk to be considered early in the land-use planning decision-making process to avoid costly and potentially dangerous new developments that could pose a risk to people, property and the environment.

Guidance co-author and GNS Engineering Geologist Dr Saskia de Vilder said on average landslides cost Aotearoa New Zealand $250 million each year and have resulted in more fatalities than earthquakes, volcanoes and tsunami combined.

“Last year saw several significant weather events including Cyclone Hale, the Auckland Anniversary Weekend storm, and Cyclone Gabrielle,” Dr de Vilder said.

“As we’ve seen, these events can cause flooding and considerable landslide damage, resulting in loss of life, damaged and destroyed homes, and disrupting and isolating communities long after the rain has stopped.

“Estimates for landslide damage from Cyclone Gabrielle alone are close to $1.5 billion. This highlights the importance of considering not just the likelihood, but the consequence of landslide hazards from large storm events.”

The Guidance has been developed to support a risk-based approach to land-use planning that considers changing weather patterns as well as current risk assessment, management and mitigation practices.

At a minimum, the Guidance recommends councils develop a landslide susceptibility map to better inform important decisions that determine where and how we live.

Advertisement - scroll to continue reading

Are you getting our free newsletter?

Subscribe to Scoop’s 'The Catch Up' our free weekly newsletter sent to your inbox every Monday with stories from across our network.

“Human activities such as the construction of buildings, earthworks, changes to surface or subsurface drainage and vegetation removal may increase the risk of landslides. The Guidance aims to ensure the risk from these types of activities are known and considered in district plans and resource consent applications rather than much further down the track,” Dr de Vilder said.

Guidance co-author and GNS Senior Natural Hazards Planner Scott Kelly identifies that land-use planning needs to consider the most up to date, fit-for-purpose information to inform decision-making.

"This Guidance provides the blueprint for what information is needed to undertake landslide analysis and assessment to support different land use decision-making. It’s not about preventing development; it’s about having the right information to inform the right development in the right place,” Scott Kelly said.

“It is hoped the recent storm events and this Guidance will be a catalyst in changing land-use planning and practice, so that the future impacts of landslides will be reduced.”

The Landslide Planning Guidance updates previous guidance released more than 15 years ago and emphasises the need to consider climate-change scenarios that are likely to exacerbate landslide hazards due to changing weather patterns.

The Guidance has been developed by the MBIE-funded Earthquake-Induced Landscape Dynamics programme and as part of the Hazard and Risk Management Strategic Science Investment Fund programme.

Read more about the Guidance at gns.cri.nz/landslideplanningguidance

© Scoop Media

Advertisement - scroll to continue reading
 
 
 
Business Headlines | Sci-Tech Headlines

 
GenPro: General Practices Begin Issuing Clause 14 Notices

GenPro has been copied into a rising number of Clause 14 notices issued since the NZNO lodged its Primary Practice Pay Equity Claim against General Practice employers in December 2023.More

SPADA: Screen Industry Unites For Streaming Platform Regulation & Intellectual Property Protections

In an unprecedented international collaboration, representatives of screen producing organisations from around the world have released a joint statement.More

 
 
 
 
 
 
 
 
 
 
 
 

Join Our Free Newsletter

Subscribe to Scoop’s 'The Catch Up' our free weekly newsletter sent to your inbox every Monday with stories from across our network.