A physically-based, distributed hydrologic model ANSWERS is described and its test results with two small watersheds near the Banweol reservoir are presented. The sizes of the watersheds are 270 ha and 477 ha, respectively. The smaller one has a mild topography with 40 percent forest area. The other has a steeper slope and 87 percent forest area. The model parameters were calibrated using observed runoff data and used for storm runoff simulation. The simulated peak discharges were in good agreement with the data. The model underestimated the recession parts of hydrographa as compared to the observed ones.