Assessment of Climate Change Impact on Snowmelt Runoff in Himalayan Region

Under different climate change scenarios, the current study was planned to simulate runoff due snowmelt in Lidder River catchment Himalayan region. A basic degree-day model, Snowmelt-Runoff Model (SRM), utilized assess hydrological consequences of climate. The performance SRM model during calibration and validation assessed using volume difference (Dv) coefficient determination (R2). Dv found be 11.7, ?10.1, ?11.8, 1.96, 8.6 2009–2014, respectively, while respective R2 0.96, 0.92, 0.95, 0.90, 0.94. values indicate that simulated closely agrees with observed values. findings were under three scenarios: (a) an increase precipitation by +20%, (b) a temperature rise +2 °C, (c) °C 20% snow cover. In scenario (b), results showed increased 53% summer (April–September). contrast, projected discharge for scenarios 37% 67%, respectively. efficiently forecasts future water supplies high elevation, data-scarce mountain environments.