Constructing the Wadi El-Maleh Basin Runoff Model by (SCS-CN) Method.

Abstract

The importance of studying valley basins came from what they provide as an important water resource for all human uses in particular, many human activities are concentrated in river basins. The Malih Valley Basin is administratively located to the south of the city of Najaf, in the eastern part of the southern Iraqi plateau, administratively within the Shabja district. Naturally, most of the area is within the lower valleys, and a few are within the stone area. Its area is (552.56) km2. The research problem is represented by the following question: Is there a surface runoff in the Wadi al-Malih basin that can be used in the development of the basin. The research hypothesis was: (There was a large amount of water in the basin, it goes to waste without being used in various fields, as a result of the availability of suitable geomorphic and hydrological capabilities). The aim of the research: to estimate the quantities of water that are present in the basin and to use it in the development of the basin. The study found the possibility of developing a salt basin from all sides through water harvesting, by creating a small-sized earthen dam, or follow the process of industrial injection, as well as the development of agricultural activity and natural plants, development of human settlements and recreational and tourism aspects, development of transportation routes and exploitation of natural resources in the salt basin.