Modelling the flood-risk extent using LISFLOOD-FP in a complex watershed: case study of Mundeni Aru River Basin, Sri Lanka
Flood management is adopting a more risk-based approach, whereby flood risk is the product of the probability and consequences of flooding. Two-dimensional flood inundation modeling is a widely used tool to aid flood-risk management. The aim of this study is to develop a flood inundation model t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-06-01
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| Series: | Proceedings of the International Association of Hydrological Sciences |
| Online Access: | https://www.proc-iahs.net/370/131/2015/piahs-370-131-2015.pdf |
| Summary: | Flood management is adopting a more risk-based approach, whereby flood risk
is the product of the probability and consequences of flooding.
Two-dimensional flood inundation modeling is a widely used tool to aid
flood-risk management. The aim of this study is to develop a flood
inundation model that uses historical flow data to produce flood-risk maps,
which will help to identify flood protection measures in the rural areas of
Sri Lanka. The LISFLOOD-FP model was developed at the basin scale using
available historical data, and also through coupling with a hydrological
modelling system, to map the inundation extent and depth. Results from the
flood inundation model were evaluated using Synthetic Aperture Radar (SAR)
images to assess product accuracy. The impacts of flooding on agriculture
and livelihoods were analyzed to assess the flood risks. It was identified
that most of the areas under paddy cultivation that were located near the
middle and downstream part of the river basin are more susceptible to flood
risks. This paper also proposes potential countermeasures for future natural
disasters to prevent and mitigate possible damages. |
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| ISSN: | 2199-8981 2199-899X |