Two-Dimensional Modelling for Dam Break Analysis and Flood Hazard Mapping: A Case Study of Papadia Dam, Northern Greece

Dams are expensive technical constructions that ensure food production, sustain farmers’ income, and cover a large percentage of urban water supply demands. However, the threat dam break flood, which can be extremely dangerous for local society, should taken into account, proactive mitigation measures planned. Towards this direction, modelling flood hazard assessment essential developing crisis management evacuation plans. In study, hypothetical case failure Papadia in Florina Regional Unit northern Greece is examined. Two scenarios were considered: overtopping piping. A two-dimensional numerical model two was used to simulate process wave routing using HEC-RAS software. sensitivity analysis mesh size breach parameters performed better understand their impact on critical outputs simulation model. Flood maps produced GIS environment based depth velocity criteria. Furthermore, classification approaches adopted assess product velocity. The results showed extent inundated area could affect most study cause severe damage agricultural activities.