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The Hunza River Basin, part of the Upper Indus Basin, is experiencing the effects of climate change on river discharge, impacting agriculture, water supply, and hydropower. To assess the discharge in the basin, the researchers used the Soil and Water Assessment Tool (SWAT) Model, which integrates GIS data and a descriptive database series. With the SWAT Model, they anticipated precipitation, sediment, and streamflow based on different management strategies. The study employed hydrograph analysis and divided the basin into 31 sub-basins and 252 Hydrologic Response Units (HRUs) using a Digital Elevation Model. Land use and soil maps were obtained from Earth Explorer and FAO digital soil data. The SWAT Model performed well during calibration and validation, with high efficiency in predicting discharge using precipitation data. It proved useful in simulating management strategies and evaluating their impact on river discharge, supporting water resource management in the Hunza River Basin and similar regions.
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