Economically optimal safety targets for riverine flood defence systems

Economically optimal safety targets for riverine flood defence systems

Dupuits, E.J.C. (TU Delft Hydraulic Structures and Flood Risk)
de Bruijn, KM (Deltares)
Diermanse, FLM (Deltares)
Kok, M. (TU Delft Hydraulic Structures and Flood Risk)

Lang, M. (editor)
Klijn, F. (editor)
Samuels, P. (editor)

2016

A breach in a flood defence will affect the downstream water levels in a riverine system, and therefore the flood risk of the system. The effect of this changed flood risk is used in an economical optimization to assess if this significantly changes the economically optimal safety targets of the flood defences in a riverine system. The impact of breaches on the flood risk and the economically optimal safety targets is modelled using simplified hydrodynamic relations and a number of conceptual case studies for small systems. Significant differences were found, but are limited to cases with a relatively high chance of breaching and/or high impact breaches. These differences seem to mostly affect the optimal heights of the flood defences, which means that including the effect of breaches can result in a different-optimal investment path.

http://resolver.tudelft.nl/uuid:f3041ba9-50a7-41f8-abf1-9a2c5882fe9c

https://doi.org/10.1051/e3sconf/20160720004

EDP Science

FLOODrisk 2016: 3rd European Conference on Flood Risk Management, Lyon, France. Lyon, France. October 17-21, 2016, 7

3rd European Conference on Flood Risk Management, FLOODrisk 2016, 2016-10-17 → 2016-10-21, Lyon Convention Centre, Lyon, France

E3S Web of Conferences, 2267-1242, 7 (20004)

Institutional Repository

conference paper

© 2016 E.J.C. Dupuits, KM de Bruijn, FLM Diermanse, M. Kok