Iran Running Out of Strategic Underground Water Reserves

Iran held 500 billion cubic meters of strategic underground water reserves or fossil water, of which 100 bcm were consumed between 2010 and 2021, a water expert said.
“Of the remaining volume [400 bcm], close to 250 bcm are fresh, half of which have been used and the rest is depleting rapidly and normal rainfall will not be able to replenish the diminishing ancient freshwater resource,” Zahir Heidari-Nejad was also quoted as saying by IRNA.
The term fossil water, or paleowater, refers to underground finite water reservoirs that have been geologically sealed. The water cannot be replenished and may have been locked in for thousands of years.