The average annual precipitation in the Eskandari watershed from 2004 to 2019 is presented in Figure \ref{723510}. Based on the results summarized in Table \ref{974045}, the MK test suggested an upward trend in precipitation with a slope of 0.334, but the zero value of Z and P statistics indicated that this trend is not statistically significant. This is further supported by the TFPWMK test, with a z-statistic of 0.494 and a p-value of 37.94. Accordingly, the amount of precipitation received in the region has remained relatively stable over the study period.