Integration of Geophysical and Hydrochemical Methods of Slabiat Depression, Southern Iraq

Aqeel Rahman Hasan

doi:10.51699/cajmns.v7i3.3325

Authors

Aqeel Rahman Hasan Iraqi Ministry of Education, AL-Muthanna Education Directorate

DOI:

https://doi.org/10.51699/cajmns.v7i3.3325

Keywords:

Geophysical, Hydrochemical, Slabiat Depression, Iraq

Abstract

The research location is situated in southern Iraq's Slabiat Depression. The WQI (Water Quality Index) and the 2D resistivity approach are the two techniques used to assess the water quality. Nineteen water samples are taken from wells in different parts of the Slabiat depression. pH, total dissolved solids (TDS), electrical conductivity (EC), total hardness (TH), calcium (Ca²⁺), sodium (Na⁺), magnesium (Mg²⁺), chloride (Cl⁻), sulfate (SO₄²⁻), bicarbonate (HCO₃⁻), and nitrate (NO₃⁻ ,are among the physiochemical characteristics that are examined. The results indicate that while the majority of the samples surpass Iraqi standards, the pH and nitrate (NO₃⁻) concentrations are within normal limits. According to the WQI, which ranges from 73.12 to 117.7, water quality is categorized as poor to unfit for human consumption. To identify the groundwater aquifers, three two-dimensional resistivity profiles are used. The RES2DINV program processes and interprets 2D resistivity data using a reliable inversion technique. The study region is divided into three primary resistivity zones. Quaternary deposits were represented by the first resistivity zone, which was located at shallow depth and ranged between 2.00 and 10.1 ohm.m. The second resistivity zone, which is found in the center of the Dammam Formation, indicates the bearing-groundwater zone and ranges from 22.8 to 51.3 ohm.m. The impermeability zone of the lower Dammam Formation is represented by the third resistivity zone, which ranged from 115 to 584 ohm.m.

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