ThThe geographical analysis of the spatial variation of rainfall and its impact on the selection of the proposed dam locations in the province of Sulaymaniyah

Abstract

ThThis research is about water resources and the construction of dams, because water resources impact directly and indirectly on human life. ThThe Increased number of population and climate changes with the Iranian political about the international rivers all of them are most factors to appear water crisis in some places in Sulaymaniyah governorate. ThTherefore the construction of the proposed dams is imposed, because water security is dangerous of in Sulaymaniyah province. ThThe goal of this research is to display the relationship between the spatial variation of rain and impact on construction dams in Sulaymaniyah governorate, because the rate of rain and precipitation factors to increase water runoffff in the river water in the region, therefore it is most signifificant to take account of the geographical principles in the planning process, especially amount of precipitation, because it’s the main factor that determines the rich and poor regions of water resources, that is helping the designers to suggest dam locations. ThThe research consists of two main parts, part one is about spatial variation rainfall in Sulaymaniyah governorate, the second part about distribution of construction proposed dams. Many research tools have been used in this paper, such as descriptions, analyses, and comparisons. Also, refernces, weather station data, and DEM fifiles in the GIS environmental were used to create maps. In the end, the result of the paper is the spatial variation of rainfall, isohyet and river basin in Sulaymaniyah governorate, impacts the construction of dams and rainwater harvesting in the area. For instance (700 mm and 800 mm) isohyet formed about (35.46%) of the research area, but participants by (71.91%) in the rainwater harvesting at the proposed dams.