​This paper assesses the flood hazard related to dam break analysis for King Talal Dam in Jordan. Probable Maximum Flood (PMF) was estimated by HEC-HMS using the Probable Maximum Precipitation (PMP) values. The PMF of Zarqa River Watershed (ZRW) was determined to be 3823 . Dam breach parameters were estimated using different models. A 2-dimensional unsteady flow simulation was used to route the breach flood in the downstream area of the dam. The maximum breach flows for overtopping and piping scenarios were estimated to be 65456 and 43748 , respectively. The study generated inundation, flood hazard, duration, and velocity maps for the dam’s downstream areas. Most of the inundated areas were classified as extremely hazardous. The maximum water depth was approximately 107 meters on some agricultural lands. The paper provides valuable insights into the dynamics of dam breach floods and their effect on downstream regions. These findings help to develop plans and policies to minimize the risk of loss of life and property due to dam failure. The emergency preparedness strategies include the development a telemetry monitoring system for the dam body and spillway, an early warning system for the upstream watersheds, physical evacuation, and emergency response plans for residents downstream of the dam. The flooded areas include schools, hospitals, and other important public and private properties. This study demonstrates the importance of efficient emergency planning to minimize potential damage. The results of this analysis can help local authorities to prioritize their plans based on the observed arrival times and flood durations. It is very important to engage local communities, government agencies, and other stakeholders in the development of integrated flood preparedness strategies and management plans.​