Table 2 Data and their sources

ARC-GIS 10.4

Terrain

Researches

From Alaska satellite facility https://asf.alaska.edu/)

Used to obtain the physical parameters and spatial information of the watershed, to generate the climate data from CODEX-Africa to the watershed

12.5 × 12.5 m used for watershed delineation

Climate

National Meteorological Agency (NMA)

(http://www.ethiomet.gov.et/)

Rainfall, temperature, and evapotranspiration (1984–2005) are input data for bias correction

Stream-flow

Ministry of Water, Irrigation, and Energy (MoWIE) (https://www.mowe.gov.et/)

Hydrological data for simulation and validation of the model