Rainfall, Water Inflow to Dams Surge 16%

From the beginning of the current water year (Sept. 23, 2022) to April 1, 2023, 21.5 billion cubic meters of water have entered Iran’s dams, indicating an increase of 16% compared with the same period of last year when the amount was 18.5 bcm.
The rise is partly due to the increase in the amount of rainfall in the country, which reached 170.2 mm in the same period, showing a growth of 11% compared to the last water year, IRNA reported.
This is also partly because of the gradual warming of the weather and the melting of snow in the mountains.
Currently, 28 bcm of water are stored in the country’s dams. It suggests an 11% rise compared with the same period of last year when the dams had 25 bcm of water.
The current volume suggests that 54% of the capacity of the dams across the country are filled.
Kohgilouyeh-Boyerahmad Province had the highest volume of rain that reached 767.4 mm in the current water year. Compared to 547 mm of rain registered in the province during the same period of last year, it shows a growth of 40%.
Chaharmahal-Bakhtiari Province received 702.1 mm of rain. With a growth of 20% compared to 582.9 mm of rain in last year's water year, it has become the second rainiest province in the country.
The least amount of precipitation was registered in Sistan-Baluchestan Province with 51.7 mm of rain during the period. Compared to 62.9 mm of rain last year, it shows a decline of 19%.
Iran has an arid and semi-arid climate with average rainfall reaching 250 mm, which is about one-third of the global average.