Glaciers significantly influence streamflow in catchments and serve as key indicators of climate change. The IPCC’s Sixth Assessment Report predicts continued glacier mass loss for decades, impacting water availability and runoff patterns, especially in the Hindu-Kush Himalayan region. This study uses the Cold Region Hydrological Model (CRHM) to simulate future streamflow in the Langtang Basin, where 53.5% of the area is glacier-covered. Therefore, future streamflow is estimated for the Langtang River Basin using CMIP6 data depicting different climatological situations and glacier cover changes. Training provided to undergraduate meteorology students on climate data analysis, enabling them to use reanalysis datasets (MEERA-2, WFDEI, ERA5) and the WECS-Gen Tool for precipitation data. This research provides insights into hydrological shifts and future water availability, benefiting downstream communities and sectors like hydropower and agriculture.