Flood hazard in Wadi Rahbaa area, Egypt

Abstract

In the last decade, attention has been devoted to the southern part of the Egyptian Red Sea coast due to the large touristic and mining activities. Egypt spares no effort to develop it, to build new urban communities, and to create new job opportunities. Many comprehensive planning studies have been conducted. Many luxurious tourist spots, airports, and harbors have been constructed. These areas are subjected to flash floods, which represent a frequent threat to these urbanization activities that may cause losses in livelihood. By analyzing the geomorphologic features of the study area, intense stream networks are detected that, with the available metrological data, require flood management and analysis to mitigate the possible negative effects and to benefit from the estimation of flood water. Rahbaa basin is a sub-catchment of wadi Hodin. Flash floods within this area threaten the Red Sea coastal plain as well as the main coastal roads. It also directly drained out to the sea, which leads to a loss of huge amounts of flood water that is useful for arid regions. Using geographic information system and remote-sensing tools with the application of a comprehensive graphical modeling (watershed modeling system) supports the hydrological modeling of HEC-1. The total amount of runoff is calculated and the hydrograph of the 50-year return period is computed using rainfall historical data.

Review of Watershed-Scale Water Quality and Nonpoint Source Pollution Models

“…WMS has been applied to watershed management [ 152 ], flood hazard analysis [ 153 ], water quality evaluation, and groundwater simulation [ 29 ]. Erturk, et al [ 152 ] used WMS 7.1 for watershed management and NPS pollution modeling in Koycegiz Lake-Dalyan Lagoon watershed (1200 km 2 ) located at the southwest of Turkey.…”

Application of electrical resistivity for groundwater exploration in Wadi Rahaba, Shalateen, Egypt

“…The Oligo-Miocene sandstone formation (Abu Ghusun Formation) is extended along the Red Sea coastal plain. This Miocene aquifer represents a good source of water (Abdel Moneim, 2005;Soussa et al, 2012).…”

“…Groundwater is considered as a preferable alternative solution to face that type of problems. The study area attracted many authors such as Abdel Moneim (2005), Yousef et al (2009), Shawky et al(2012), Soussa et al (2012) and Khalil (2014). The main objective of this study is to identify the shallow aquifer and salt/fresh water zone distribution in the study area using geophysical technique represented by electrical resistivity method.…”

“…The elevation of the coastal strip varies between 20 and 196 m above sea level (Shawky et al, 2012). The study area is also a part of Rahaba basin which is a sub-catchment of wadi Hodein (Soussa et al, 2012). Wadi Rahaba is responsible for supplying the study area with the Quaternary alluvial sediments that drains from west towards the Red Sea (Abdel Moneim, 2005;Soussa et al, 2012).…”

Rock-water interaction processes based on geochemical modeling and remote sensing applications in hyper-arid environment: cases from the southeastern region of Egypt

“…The precipitation is negligible over the South Eastern Desert without any source of recharge (e.g., Lake Nasser and Northern Sudan Platform) (Ahmed and Abdelmohsen 2018). Accordingly, groundwater is considered as an alternative solution to face these problems, and therefore, the area attracted many authors such as Abdel Moneim (2005), Yousef et al (2009), Shawky et al (2012), Soussa et al (2012), and Khalil (2014) to investigate geology and water resources. The groundwater contains different types of minerals carried in solution where the types and concentration of these minerals are mainly conditional on multi-factors such as rocks chemistry, surface and groundwater interactions, the geologic setting of the preferred pathways for groundwater flow, and any other sources for water pollution.…”