Abstract
The consideration of uncertainties in flood risk assessment has received increasing attention over the last 2 decades. However, the assessment is not reported in practice due to the lack of best practices and too wide uncertainty bounds. We present a method to constrain the model roughness based on measured water levels and reduce the uncertainty bounds of a two-dimensional hydrodynamic model. Results show that the maximum uncertainty in roughness generated an uncertainty bound in the water level of 1.26m (90% confidence interval) and by constraining roughness, the bounds can be reduced as much as 0.92m.
Original language | English |
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Pages (from-to) | 1445-1457 |
Number of pages | 13 |
Journal | Natural Hazards and Earth System Sciences |
Volume | 19 |
Issue number | 7 |
DOIs | |
State | Published - 18 Jul 2019 |