Investigating Hydraulic Properties of Aquifers in Duhok Governorate, Kurdistan Region, Iraq

Seeyan, Shwan

doi:10.33899/earth.2025.153785.1360

	Investigating Hydraulic Properties of Aquifers in Duhok Governorate, Kurdistan Region, Iraq
Iraqi National Journal of Earth Science (INJES)
Article 21, Volume 25, Issue 4, October 2025, Pages 291-303 PDF (969.27 K)
Document Type: Research Paper
DOI: 10.33899/earth.2025.153785.1360
Author
Shwan Seeyan^*
Soil and Water Department, Agriculture Engineering Sciences College, University of Salahaddin, Erbil, Iraq
Abstract
The properties of the aquifer that influence well performance are depth, aerial extent, number of water-bearing formations that the well penetrated through, and the hydraulic properties of the aquifer that allow water to flow through the aquifer must typically be established. The transmissivity and hydraulic conductivity are important factors. Pumping test data were carried out for 40 drilled boreholes (including observation and monitoring wells) at different locations to determine the groundwater flow direction and hydraulic properties of the aquifers in the Duhok area. The depths of the wells range from 70 to 265 m with an average of 171 m while well discharge ranged from 3.0 to 17 l/s with an average of 7.0 l/s. The results of the analysis reveal that the value of hydraulic conductivity varies from 1.25E-6 m/sec to 1.2E-3 m/sec with an average of 1.02E-4 m/sec, and the transmissivity varies from 1.82E-4 to 4.37E-2 m²/sec with an average of 8.75*10^-3 m²/sec. Specific yield ranges between 0.11 to 3.29 percent with an average of 1.06 percent. Maps of the Duhok aquifer's piezometric surface, hydraulic conductivity, specific yield, and transmissivity have been created. These can be employed in the area's planning, site selection, and well drilling procedures.
Keywords
Hydraulic Conductivity; Specific Yield; Transmissivity; Aquifer properties; Duhok Governorate

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