this is the lin sazeh .se watershed brands prevent floods and silver deposits, which damages the cause of flood causes it to decrease very much, and in recent years we have had several floods, which has caused us to prevent flooding that would have caused heavy damage to our agricultural sector and our houses. reservoirs are one of the possible natural disasters, it is not just control, it is not just a museum, it is not erosion, increasing the trust of local communities, protecting food security, creating water base flow, or serving the development of vegetation. support people's participation in drainage activities in the budget law of 1402, paragraph 108 page , cash and non-cash contributions of donors in the implementation of watershed management operations are considered as tax acceptable expenses. in watershed management projects, in the event of this happening and with the approval of the general administration , they can get a better menu from the tax-exempt fars, north khorasan, hormozgan, golestan,