Abstract
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 1.26 m (90 % confidence interval) and by constraining
roughness, the bounds can be reduced as much as 0.92 m.
Funder
Bundesministerium für Bildung und Forschung
Subject
General Earth and Planetary Sciences
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