Geohazard risk management and resilient road asset management in Nepal
Donor/Partner: World Bank | Duration: 2018-2019 | Location: Nepal
About: In many developing countries, the construction of local roads, highways, and forest roads in river basins and mountainous areas are the most important triggers of landslides. These infrastructure can lead to higher rates of erosion and sedimentation. Nepal is facing further difficult challenges managing their landslide risks, including challenging terrain, the young geology of the Himalayan mountains, and annual monsoon rainfall. To expand the current landslide risk assessments in Nepal and engage on climate and disaster risk across India and Nepal, the Geohazard risk management and resilient road asset management in Nepal project has been launched.
The project will review existing landslide risk data; identify hotspot areas, early warning systems, and relevant mitigation measures; and support institutions and organizations. It will advise on-going projects, such as the Nepal: Road Sector Development Project and Nepal-India Trade and Transport Project. The project will further assess and advise the Department of Roads on considering climate change risk and earthquake mitigation into road infrastructure development. Lastly, the project will build upon earlier hazard mapping and data collection.
The objective will be achieved through applying climate and seismic vulnerability assessment to specific roads. Climate risks will be determined based upon precipitation, geology, land-use, population density and poverty levels. The highest impact/hot spot areas will be identified, and risk mitigation activities proposed. The Department of Roads, and other relevant agencies responsible for road infrastructure will then be advised on the findings, and how to assess risk, vulnerabilities and prepare mitigation plans in order for them to apply the methodology to other road sector projects.
The project will take an innovative, landscape-wide approach. Traditionally, landslides have been addressed at a very local scale, excluding the potential impacts of activities upstream or along other slopes. The second innovative approach that this project will undertake is bringing all the relevant stakeholders around the table to adopt a proactive approach to risk mitigation planning.
Objective: to assess and advise on the future climate and seismic risk to road investments in Nepal.
- Conduct disaster and climate risk assessment for transport infrastructure assets for river flood events and landslides based on different scenarios of climate change, and seismic hazard
- Development of a dynamic, interactive, user-friendly Decision Support System for mitigation planning
- Assess current and future network costs (risk assessment) associated with the disruption of use
- Prepare guidance notes for interventions to increase the resilience of the roads and bridges, assess their robustness and cost-efficiency, and develop risk mitigation plans for scaling-up the methodology to other road networks throughout the country
- Prepare final risk mitigation plan for the specified roads and bridges, and a report on analysis and results
- Disseminate findings on climate change risk assessment to technical staff for sustainability of interventions
View photos from this project on Flickr: