Hydrochemical Characteristics of Groundwater and Their Significance in Arid Inland Hydrology

Phreatic groundwater hydrochemistry is important for sustainable water utilization and ecological stability in arid regions. Based on the test data from collected samples, this study explored phreatic recharge, hydrochemical evolution, quality of Sugan Lake Basin using hydrogeochemical, isotopic, multivariate statistical analyses. The stable isotopic results showed that alluvial fan, plain, wetland areas basin generally originated modern water, piedmont was mainly recharged by paleowater under low-temperature conditions. Carbonate dominant mineral regional rock weathering process. controlled dissolution cation exchange; however, other significantly affected river infiltration. This indicates regime sensitive to natural flow without disturbing human activity. Class I–V samples accounted 2.86%, 25.71%, 34.29%, 14.29%, 22.86%, respectively. Total dissolved solids, total hardness, sulfate, chloride, nitrite, Na, Fe, Hg, Cr VI are factors determine quality. deepens understanding characteristics hydrologic cycles provides background values interference further inland basins.