This study investigated the spatial distribution and driving factors of evapotranspiration (ET) in the Kuye River Basin during the 2023 growing season. Landsat 8 remote sensing imagery and meteorological data were used to estimate ET based on the surface energy balance system (SEBS) model, and the results were evaluated against reference evapotranspiration calculated using the Penman-Monteith model. The results revealed pronounced spatial and temporal variations in ET throughout the growing seas