TY - JOUR
T1 - Consequences of dike breaches and dike overflow in a bifurcating river system
AU - Bomers, Anouk
AU - Schielen, Ralph M.J.
AU - Hulscher, Suzanne J.M.H.
N1 - Springer deal
PY - 2019/5/15
Y1 - 2019/5/15
N2 - Currently, the effect of dike breaches on downstream discharge partitioning and flood risk is not addressed in flood safety assessments. In a bifurcating river system, a dike breach may cause overland flows which can change downstream flood risk and discharge partitioning. This study examines how dike breaches and overflow affect overland flow patterns and discharges of the rivers of the Rhine delta. For extreme discharges, an increase in flood risk along the river branch with the smallest discharge capacity was found, while flood risk along the other river branches was reduced. Therefore, dike breaches and resulting overland flow patterns must be included in flood safety assessments.
AB - Currently, the effect of dike breaches on downstream discharge partitioning and flood risk is not addressed in flood safety assessments. In a bifurcating river system, a dike breach may cause overland flows which can change downstream flood risk and discharge partitioning. This study examines how dike breaches and overflow affect overland flow patterns and discharges of the rivers of the Rhine delta. For extreme discharges, an increase in flood risk along the river branch with the smallest discharge capacity was found, while flood risk along the other river branches was reduced. Therefore, dike breaches and resulting overland flow patterns must be included in flood safety assessments.
KW - UT-Hybrid-D
KW - Dike breaches
KW - Flood risk
KW - Hydraulic flood modelling
KW - Overland flow
KW - Discharge partitioning
UR - http://www.scopus.com/inward/record.url?scp=85069463425&partnerID=8YFLogxK
U2 - 10.1007/s11069-019-03643-y
DO - 10.1007/s11069-019-03643-y
M3 - Article
VL - 97
SP - 309
EP - 334
JO - Natural hazards
JF - Natural hazards
SN - 0921-030X
IS - 1
ER -