that although the development of infrastructure is expensive, if it happens once , it can cover a large part of the costs of the treatment field. dredging of gorgan bay the gulf of gorgan, which is one of the largest freshwater reservoirs connected to the caspian sea, has been suffering from a water shortage crisis and the death of gliders in its waterways for years. the president's order in the last 20 years of golestan province dredging these waters was keyed and the progress of inter 61% it is the connecting point of the ashurade canal and the caspian sea, where the depth of the water is less than 10 cm. one year has passed since that day. with the order of the president during his visit to golestan , a dredging contract was signed with the contractor to be carried out. now nine months have passed since the beginning of the dredging work. they take the channel 2495 ahead 25 people have spent 6074 hours on the screen, 67 heavy and light machines are working in this project , and it has become this channel with an average width of 300 meters and a depth of one meter and 60 cm. the length of the existing main channel is 2,700 meters. terrorist operations are being cond