Investigating the hydraulic relationship of karst structures with hydrogeochemical and isotopic methods of water resources in Izeh region, north of Khuzestan province

Proper water resources management relies on recognizing and evaluating the factors affecting the quantity and quality of the water resources. In the present study, the hydraulic relationship between the karstic structures of the Izeh territory located has been assessed using hydrogeochemical and isotopic information of water resources. To investigate the number of 31 water samples (17 wells, 8 springs and 6 rain samples) in the areas of Kamarderaz, Mongasht, Shavish-Tanosh, Anticlines and the Naal-e-Asbi (Horseshoe) Syncline were taken on June 1398 and June 1400, and hydrogeochemical as well as isotopes δ18O and δ2H were examined until to the hydrogeological and hydraulic behavior of this complex karstic system. The results of hydrogeochemical analysis of the specimens showed that the concentration of ions is influenced by the dissolution of calcareous rocks. The isotopic content of groundwater samples is from 5.62 to 3.49- ‰ and from 20.97 to 12.29- ‰ for δ18O and δ2H. Investigating the isotopic content of water wells and springs of the region indicates three groups of water. The first group of indentation springs is fed from altitudes and snow from altitudes. Fast water in the canal system caused a low latency in these springs. The second group is enriched more than the first group, and in addition to precipitation, the mixing of underground water is also effective in providing their water. The third group has longer than other samples due to evaporation and distances longer than the feeding site and the enrichment system. The decrease in Sr+2 and incremental Ba+2 of dolomitic limestone samples (Shavish-Tanosh and Mongasht) to water samples of chemistry and hinges, as well as structural and isotopic data indicate the probability of nutrition. The karstic aquifers of the region are from the anticline, as well as the hydraulic relationship between these structures.