This research aims to gain the result of assessment of inflow categorized by runoff path using
DIROM (Daily Irrigation Reservoir Operation Model) for Baengnyeong-myeon reservior which
was built for residents of Baengnyeong island to solve the shortage of drinking water and stable
supply of domestic water.
The simulation results of DIROM and actual hydrograph of the reservoir show very low
correlation with geological characteristics.
The simulation results by DIROM after adjusting with modified Tank III model which
considers all outflow from Tank II model as interflow among 3 level tanks show good
correlation of its regional runoff and inflow characteristics with R2=0.9058.
In the study area, diffluence of 37% of rain fall of the study year has been simulated, which shows low result compared to the average river runoff of national water resource. In addition,
34.5% of total inflow to the study reservoir is mainly interflow and baseflow among expected
several channels.