## 6 Conclusions and Recommendations  
This work is focusing on assessing flash flood hazards in the strip zone between ElQussier and Marsa-Alam along the eastern Egyptian Red Sea coastal line by investigating and calculating the morphometric analysis and hydrological characteristics of the catchments and sub-catchments of the study zone during October 2009 and 2019 storm events. In this study, the lack of geological hazards information was compensated in order to fill the study gap in a very important coastal zone of the Egyptian Red Sea coast. Morphologically, the studied zone are classified into three strip zones and the most hazardous signals are distributed along the western strip. General quantitative morphometric results indicate that, all catchments and sub-catchments provide low \(\rm{R_{b}}\) values, and their total frequencies ranged from 0.497 (SC1) to 0.701 (SC2). SC1 and SC2 are located in the northern part of the study zone. \(\rm{R_{b}}\) and F indexes provide suitable conditions for flash flood events. The investigated catchments and sub-catchments have nearly moderate densities. The only high-density value is 1.016 (SC3), which is remarked as an anomaly index factor. The density index values reflect moderate relief, semi-permeable subsurface beds, and semi-dense vegetation cover, particularly along the western strip zone (Pre-Cambrian Red Sea mountainous zone). The hydrological characteristics of the major catchments (C1:C6) indicate dominant moderate conditions for flash floods. This adds many explanations to our understanding of the behaviors of the hydrological models and underground water storage.  
According to the general results of this study, many strategies have been recommended to minimize the negative effects of the major storms on infrastructure and population sites. These strategies include:  
1. Studying in details the seismic/tectonic behaviors of the future strategic projects and huge constructions.
2. Constructing dams in the most hazardous spots along the specific valleys.
3. Initiating channels and valleys mouths to receive the great rainfall accumulation toward the Red Sea.
4. Planning the future major projects and constructions to be away from the courses of the major floods.
5. Establishing hazard monitoring stations along the risky regions.  
**Author Contributions:** Conceptualization, A.K.; data acquisition, A.K.; methodology, A.K., B.B., A.A. and H.B.; software, A.K. and B.B.; validation, A.K., B.B., A.A. and H.B.; investigation, A.K. and H.B.; writing--original draft preparation, A.K. and B.B.; writing--review and editing, B.B. and A.A.; visualization, A.K.; supervision, A.K., B.B. and A.A.; project administration, A.K., B.B. and A.A.; funding acquisition, B.B. and A.A. All authors have read and agreed to the published version of the manuscript.  
This research was funded by Researchers Supporting Project, grant number RSP-2021/296, King Saud University, Riyadh, Saudi Arabia.  
Not applicable.  
This work was discussed, modified, and improved by the structural geology and tectonics lab of the Department of Geology, Faculty of Science, Al-Azhar University.  
The authors declare no conflict of interest.