Groundwater vulnerability map of Sulaymaniyah sub-basin using SINTACS model, Sulaymaniyah Governorate, Kurdistan Region, Iraq

Dara Faeq Hamamin, Rebar Aziz Qadir, Salahalddin Saeed Ali
Faculty of Science and Science Education, University of Sulaimani, Bakrajo Street, Sulaimaniyah- Iraq.
Groundwater Directorat of Sulaymaniyah, Iraq.


Abstract

The present work locates in the Complex and Unstable Platform of Arabian Plate
within the Zagros Fold-Thrust Belt (ZFTB). It expands over an area of 523 Km2
in the Sulaymaniyah Governorate. Lower Cretaceous and Holocene formations are the
dominant stratigraphic units exposed in the area. The alluvium intergranular, karstic
fissured, and complex aquifers are the principal water-bearing beds occur in the field of
the question. The present study deals with the evaluation of groundwater vulnerability to
pollution using SINTACS model in addition to the assessment of the validity of four
scenarios applied in this work “Normal, Relevant, Drainage impacts and Nitrate
scenarios” with the spatial distribution of nitrate “NO3” map. Nitrate spatial map was
constructed from 96 water samples collected from domestic and agriculture water wells,
emergence from karezes and springs in benefit with the Geographic Information System
(GIS). Although the SINTACS method gives good outputs in the evaluation of
groundwater vulnerability to pollution, it cannot be used for reliable assessment of the
groundwater pollution risk. Therefore, it is necessary to calibrate the original scenarios
with nitrate distribution to obtain more accurate results.

Key Words:
Vulnerability;
SINTACS;
Aquifers;
Nitrate pollution,
Semi–arid;
GIS


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