چکیده:
Flash floods are considered to be one the worst kind of hazard. They are characterized by their suddenness, rarity, small scale, heavy rain and peak discharge, unpredictable, fast and violent movement. It has severe effects on human society in the form life losses, damages to property, roads, communication and on natural settings. Advances in hydrology, meteorology, engineering, using of GIS and remote sensing still not able to increase real time forecast. Researchers from developed countries have stressed to more focus to improve very short time an effective early warning system with collaboration of local communities for flash flood risk supervision. The data were combined with the Geographical Information System to analyze the temporal and spatial distribution of flood events in Salah Al-Din Governorate and Ramadan Valley. The analysis of the spatial distribution of the floods proves that most of the occurrences are recorded in the southern part of the study area. Most of the flooded areas in the study area are mainly pre-classified areas within the areas threatened by the flood due to the low level of its surface and its proximity to the course of the main valley (Wadi Jarnav), which flows into the Tigris River. The proposed method estimates the localization of sites prone to flood, and it may be used for flood hazard assessment mapping and for flood risk management. It was therefore, suggested that government agencies and policy makers should adopt this powerful technique for reliable and well synthesized information which is a vital component of flood risk assessment and planning.
خلاصه ماشینی:
Water immersion level for homes On 23/11/2018 Factors causing flooding in the study area: The reconstruction of the villages of Khadraniya and Houriya requires that we look at the reasons that led to the flooding of this valley at this particular time, although more than 80% of its housing units have been established for more than 50 years and throughout this period their role has not been exposed to the flood.
Shows the earth dams built on the valley basin (Source: Bariq, Unpublished Master Thesis, Tikrit University, College of Education for Humanities, Department of Geography, 2018) Spatial Proximity: The approach of the people to the course and settlement through the establishment of housing units is one of the reasons for the flood on the lack of impact, because we have already shown that more than (80%) of the housing units in the villages of Khadraniya and Hurriyah have been in these places near the valley more For 50 years, there was no flood threatening the existence of these housing units, in addition to the competent authorities (Department of Water Resources) There are no taboos for this valley to prevent residents from exceeding them by building.