On the other hand, the extent of the negative trend in aquifer storage volume within the three aquifers upstream of the Eskandari station from 2005 to 2019 was evaluated and demonstrated in Table \ref{642548}. A total of 430.69 million cubic meters water depleted in the three aquifers in 2019. We then calculated the reduction in aquifer storage for each subsequent year relative to the initial value in 2004 (-160.58), resulting in a cumulative depletion of 270 million cubic meters of water from the underground water table between 2004 and 2019. Surprisingly, this over-extraction from the aquifers, which has placed significant pressure on the groundwater resources occurred despite implementing the Cheshmeh-Langan inter-basin water tunnel in 2005, which was expected to replenish the underground water table in the region. To assess the total water volume drifted out from the watershed, the combined effects of the cumulative depletion of aquifer storage and the excess water volume of the Cheshmeh-Langan tunnel were considered on an annual basis (Table \ref{642548}). The findings revealed a total decrease of 336.14 million cubic meters over 16 years.