Determination of Mardin-Kızıltepe plain groundwater level using geographic information systems and analysis of change between 1985-2019

Authors : Serkan Kılıçaslan

Pages : 638-658

Doi:10.29050/harranziraat.1514375

View : 70 | Download : 51

Publication Date : 2024-12-15

Article Type : Research Paper

Abstract :65% of groundwater resources are used for agricultural irrigation. This situation has made the management and protection of groundwater very important, especially in terms of the protection of natural resources and sustainable agriculture. For this purpose, in the study carried out in the Mardin-Kızıltepe Plain, which is one of the regions with intensive use, groundwater conditions and how they change over time were examined. The 34-year (1985-2019) drilling data of the region were divided into 7 periods and thematic maps of Static Water Level (SWL), Dynamic Water Level (DWL), Well Depth (WD) and Well Yield (WY) data were created and the change rates were analyzed using the reverse distance interpolation technique. While the proportion of the area classified as SWL shallow and normal in Period-1 was 100%, it decreased to 7.5% in Period-7, while the proportion of deep and very deep class, which was 0% in Period-1, reached 92.5%. While the ratio of shallow and normal class was 100% in DWL Period-1, it decreased to 0.2% in Period-7, and the rate of 0% in deep and very deep class in Period-1 reached 99.8% in Period-7. In terms of WD, while 100% of the well depths drilled in Period-1 were in the shallow and normal class, this rate decreased to 0.3% in Period-7, and the rate in the deep and very deep class reached 99.7%. Using the period-7 data, the exploitable groundwater potential of the region was classified and 3.2% of the area was classified as poor (390,78.4 ha), 44% as normal (130,372.3 ha), 36.2% as good (107,295.1 ha), 6.6% as very good (19,465.2 ha). In terms of 14 reference points, the underground SWL fell between 21-149 m, the DWL between 35-193 m, and borehole irrigation well depths of more than 300 m. It is expected that this study will be an important resource in groundwater management and protection in terms of environmental and natural resources protection and sustainable agriculture and will guide future studies on this subject.
Keywords : Yeraltı suyu, CBS, İnterpolasyon, IDW