if not, the villages would really disappear. 32 mm of rain fell in dervand watershed.l equivalent to one million cubic meters. this rain enters the charlos river and then the caspian sea. while with water management measures, 80% of these rains in the soil penetrated and prevented up to 70% of flood damage. haratian, sed and broadcasting news agency. yes, we saw the report of my colleague mrs. haratian together . here in the half-day interview studio, mr. vahid , the deputy director of watershed management of the country's natural resources and watershed management organization, is present. we will also have contacts that i will introduce to you . mr. vaheed, greetings to you from this flood. let's start in the west of mazandaran, what was the cause of the flood ? yes, in the name of allah , the most merciful , the most merciful. respected president and his accompanying delegation, you see, in any case , we are now forced to deal with a series of extreme currents in the country, which may at some point end up raining with great intensity and in a very small distance or