Physically based models require both spatial and temporal data. The input data used include soil maps, land use land cover (LULC) maps, digital elevation models (DEM), meteorological data and runoff data. The meteorological data used for this study, such as 20 years of daily minimum and maximum temperatures and rainfall from six meteorological stations in the study area, were collected from the Ethiopian National Meteorological Agency. Similarly, 20 years of daily runoff data (at Abura station) needed for validation and calibration of the proposed models were collected from the Ethiopian Ministry of Water, Irrigation and Electricity. The statistics of the daily runoff data at the Abura hydrometry station and the Thiessen polygon average precipitation (from six stations) are shown in Table 1. From the total of 20 years of daily data, the first 2 years of data (1998–1999) were used for the warming period, 12 years of data (from 1 January 2006 to 31 December 2017) were used for the calibration of the models and 6 years of data (from 1 January 2000 to 31 December 2005) were used for validation.