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<p>This study uses seven criteria (i.e., rainfall data, water runoff, slope, drainage density, geology, soil, and land use/cover) to investigate rainwater harvesting in the Erbil Watershed in the Kurdistan Region of northern Iraq. The Triangulated Irregular Network (TIN) layer was used to calculate the storage capacity of each dam. The drainage density and a contour line layer with 5-m intervals were used to determine suitable dam locations. Thirty-seven per cent of the study area is suitable for water harvesting, while 26% is only moderately suitable, and the remaining 37% is very poorly suitable. Most of the research area is primarily covered with clay, interspersed with thick beds of conglomerate, which is indicative of the type of sediments present in the area. The thickness, pebble size, and percentage of conglomerate decrease towards the south and southwest from the highlands (up to 900 m) that form in the study area's northern and northeastern regions, where the slope is approximately 2.34%. Based on the volume and height of the dams, calculated from the TIN layer, three locations were suggested. These dams have a combined water capacity of approximately 35 million cubic meters.</p>

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Water harvesting in Erbil Watershed, Kurdistan Region of Iraq

  • 期刊论文

  • 发表日期：

    2025年3月14日

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  • Evan Hajani,
  • Varoujan K Sissakian,
  • Idris Musa,
  • Soorkeu A Atrooshi,
  • Wim Douven,
  • Ilyas Masih

摘要

This study uses seven criteria (i.e., rainfall data, water runoff, slope, drainage density, geology, soil, and land use/cover) to investigate rainwater harvesting in the Erbil Watershed in the Kurdistan Region of northern Iraq. The Triangulated Irregular Network (TIN) layer was used to calculate the storage capacity of each dam. The drainage density and a contour line layer with 5-m intervals were used to determine suitable dam locations. Thirty-seven per cent of the study area is suitable for water harvesting, while 26% is only moderately suitable, and the remaining 37% is very poorly suitable. Most of the research area is primarily covered with clay, interspersed with thick beds of conglomerate, which is indicative of the type of sediments present in the area. The thickness, pebble size, and percentage of conglomerate decrease towards the south and southwest from the highlands (up to 900 m) that form in the study area's northern and northeastern regions, where the slope is approximately 2.34%. Based on the volume and height of the dams, calculated from the TIN layer, three locations were suggested. These dams have a combined water capacity of approximately 35 million cubic meters.