Utilizing the KINFIL model for investigation of deforestation on the runoff- peak (Case study: Sepidroud catchment)

The KINFIL rainfall-runoff model has been used for the reconstruction of the rainfall runoff events in agricultural land use. The implementation of the KINFIL model supported by GIS proved to be a proper method for the flood runoff assessment on Sepidroud catchments(north of Iran), during which different scenarios of the rainfall events. The results show when the observed discharge peak was 2.25 m3/s, the computed discharge by the KINFIL model predicted 2.4 m3/s (about 7% errors) and when the observed discharge peak was 1.9 m3/s, the computed discharge by the KINFIL model predicted 1.8 m3/s (about 5% errors) .also, the KINFIL model may be used for the catchment management, including the investigation of deforestation on predict flood runoff assessment with a significant precision. The results showed when deforestation reaches 10% of total primitive areas in Sepidroud basin; the runoff-peak may increase more than 14.5 times.