Verisk Inland Flood Model for Malaysia and Indonesia
Introducing the Verisk Inland Flood Model for Malaysia and Indonesia.
Scope
New model estimates losses from inland flooding (on- and off-floodplain) caused by tropical cyclone (TC) and non-TC precipitation across Malaysia and Indonesia.
General model updates
Model domain
- Malaysia
- Indonesia (including the Islands of Java, Sumatra, and Borneo)1
Peril(s)
- Inland flood (on- and off-floodplain)
Model resolution
- 30 m
Hazard
- Precipitation is simulated using a statistical perturbation approach.
- Hydrology model captures both large-scale and highly-localized floods, including flash floods.
- Model accounts for the hydrological response to rainfall, including the space-time patterns of rain, effects of a highly variable climate, topography, local geology, soil type, antecedent conditions, land use and land cover, flow routing, effects of lakes, man-made flood defenses and flood regulation, diversions, and other local factors.
- Flood intensity is determined based on inundation (water) depth.
- On-floodplain inundation depth is calculated using a one-dimensional hydraulic model combined with a two-dimensional (2D) shallow water flood mapping tool.
- Off-floodplain and small catchment inundation depth is calculated using a 2D shallow water model.
- Event definition is based on a 504-hour duration clause.
Vulnerability
- All flood damage functions (buildings and contents) use a component-based approach that assesses damage at a granular level, rather than for a building as a whole.
- Supported primary risk characteristics include construction, occupancy, and height.
- Support for demand surge
Catalogs and event sets
- Stochastic catalog(s)
- 10,000-year catalog
- Historical event set
- Six events
- 2006 Malaysia Flood
- 2007 Jakarta Flood
- 2013 Jakarta Flood
- 2014 Malaysia Flood
- 2019 Jakarta Flood
- 2021 Malaysia Flood
- Six events
Touchstone-specific details
- Support for specialized risk types
- Builder's risk
- Infrastructure
- Large industrial facilities
- Marine
- Supported construction and occupancy codes
- Construction: 140 classes (including 20 marine asset classes)
- Occupancy: 128 classes (including 62 large industrial facility and 12 marine storage classes)
- Support for 12 secondary risk characteristics
- Backwater valve protection
- Base flood elevation
- Basement finish type
- Basement level count
- Content vulnerability
- Custom elevation
- Custom flood standard of protection
- First floor height
- Floor of interest
- Foundation type
- Service equipment protection
- Wet floodproofing
- Touchstone geographic resolutions
- Country
- CRESTA
- Area
- Sub area
- Postal code
- User-specified latitude/longitude
- Geographic variability of exposure distribution for buildings with unknown characteristics and combinations is captured by accounting for local building attributes.
- Support for flood hazard maps/geospatial layers (20-, 50-, 100-, 200-, 250-, and 500-year return periods).
- Support for 1-km disaggregation.
Touchstone Re-specific details
- New and updated Industry Exposure Databases
- Malaysia - new
- Vintage: 2024
- Resolution: 1 km
- Indonesia - updated
- Vintage updated/indexed to 2024
- Resolution: 1 km
- Malaysia - new
- Touchstone Re lines of business and coverages
- Residential (buildings, contents, building and contents)
- Commercial and industrial (building, contents, building and contents)
- Automobile
- Agriculture
- Touchstone Re geographic resolutions
- Country
- CRESTA
1 Model does
not include all islands in Indonesia.