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Suitable Site Selection for Rainwater Harvesting and Storage Case Study Using Dohuk Governorate

1
Department of Geography, Faculty of Arts, Soran University, Soran 44008, Iraq
2
Department of Geography, College of Human Sciences, University of Halabja, Halabja 46006, Iraq
3
Department of Geography, Faculty of Education, Koya University, Koysinjaq 46011, Iraq
*
Author to whom correspondence should be addressed.
Water 2019, 11(4), 864; https://doi.org/10.3390/w11040864
Received: 17 March 2019 / Revised: 17 April 2019 / Accepted: 23 April 2019 / Published: 25 April 2019
(This article belongs to the Section Water Resources Management and Governance)
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Abstract

The Middle East is an inherently dry zone. It has experienced severe drought for the last seven years, and climate change has made the situation worse. The Dohuk governorate has been suffering from an appalling water crisis. One possible way of relieving this water crisis is by properly harvesting the rainwater. Rainwater harvesting is a widely used method of storing rainwater in the countries presenting with drought characteristics. Several pieces of research have derived and developed different criteria and techniques to select suitable sites for harvesting rainwater. The main aim of this research was to identify and select suitable sites for the potential erection of dams, as well as to derive a model builder in ArcMap 10.4.1. The model combined several parameters, such as slope, runoff potential, land cover/use, stream order, soil quality, and hydrology to determine the suitability of the site for harvesting rainwater. To compute the land use/cover categories, the study depended on Landsat image data from 2018. Supervised classification was applied using the ENVI 5 software, while the slope mapping and drainage order were extracted using a digital elevation model. Inverse distance weighting (IDW) was used for the spatial interpolation of the rain data. The results demonstrated that suitable areas for water harvesting, are located in the middle and northern part of the research area, and in intensively cultivated zones. The main soil texture in these suitable sites was loam, while the rainfall rate amounted to 750 to 900 mm. This research shows that 15% and 13% of the area studied can be categorized as having excellent and good suitability for water harvesting, respectively. Furthermore, 21% and 27% of the area studied were of moderate and poor suitability, while the remaining 24% were not suitable at all. View Full-Text
Keywords: rainwater Harvesting; site selection; Soil Conservation Service Curve Number (SCS-CN); GIS; Dohuk rainwater Harvesting; site selection; Soil Conservation Service Curve Number (SCS-CN); GIS; Dohuk
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ibrahim, G.R.F.; Rasul, A.; Ali Hamid, A.; Ali, Z.F.; Dewana, A.A. Suitable Site Selection for Rainwater Harvesting and Storage Case Study Using Dohuk Governorate. Water 2019, 11, 864.

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