To utilize this approach in the Eskandari watershed, the initial step involved gathering data from 44 meteorological stations located within and around the watershed boundary. Subsequently, ArcGIS software was employed to create a Thiessen polygon. Overlaying this network onto the study area divided the Eskandari Watershed into nine distinct regions, namely Eskandari, Ashann, Agche, Buin, Shafi al-Qassab, Fereydun Shahr, Qaleh-ye Baba Mohammad, Mirabad, and Meydanak stations. Figure \ref{871390} shows a DEM map of the Eskandari Watershed with the selected meteorological stations.