2004 Volume 48 Pages 37-42
To facilitate flood prediction and water-resource management, this study examines a method of modeling the storage effect of accumulated snow for the entire watershed. To achieve this, it is necessary to take into account the time lag as a factor depending on the state of accumulated snow.
We found that the constantly changing storage effect can be parameterized simply, based on the depth of accumulated snow as calculated by long-term hydrologic model. Outflow at the lower surface supplied by infiltration of melt water from the upper surface is then applied to runoff calculation. Reduction in snow accumulation, early onset of snowmelt period and anomalous rainfall patterns due to climatic changes have been concerns in recent years. An attempt was made to propose a generalized runoff model that can be applied under any conditions in cold, snowy regions
