The Koshi River system plays a vital role in the socioeconomic development of the region. It supplies water for agriculture, hydropower generation, and fisheries, and it also has cultural and religious significance. However, due to the rugged and fragile topography and the impact of the monsoon season, the basin is prone to natural disasters such as floods and landslides. These hazards primarily occur during the monsoon season, which lasts from June through September.