2026. Assessment of Groundwater Level Trends Using Mann--Kendall Test, Sen’s Slope Estimator, and GIS Mapping in the Bandikhan District, Surkhandarya, Uzbekistan. Journal of Hydraulic and Environmental Engineering. 4, 1 (Jun. 2026), 3–19. DOI:https://doi.org/10.35938/jhee-2026-1-00001.