Abstarct: Abstract Gorgan Bay is one of the largest bays in the Caspian Sea, which is very important in terms of the value of its functions. With the beginning of a new round of the Caspian Sea water level reduction process since 1995, which continues to this day, as well as heavy sedimentation at the mouth of the Gulf, which is the only water connection with the Caspian Sea, the water level in the Ashuradeh and Chapqali canals Is reduced and the opening is blocked. According to the researches done by the researchers, if the mouth of the bay is blocked and its water connection with the Caspian Sea is cut off, Gorgan Bay will suffer from severe drought and there is a possibility of its complete drying up. According to the final report of the Gorgan Bay National Rescue Committee, which has introduced dredging of canals located at the mouth of Gorgan Bay (Ashuradeh Canal and Chapqali Canal) as a temporary solution to get out of the Gulf of Gorgan emergency, suggested solutions to eliminate or reduce severe sedimentation of Gorgan Bay It is important to maintain its water connection with the sea. Therefore, in this dissertation, at first, the characteristics of the region and the phenomena affecting this water area have been studied. baxsed on the studies, different scenarios that according to the physics and characteristics of the region are able to solve the problems created in the Gorgan Bay area and Miankaleh wetland are proposed and then, each of the proposed scenarios is studied and modeled by software Mike 21 is located. Finally, the results and impact of each scenario are reported, and the best possible scenario that has the potential to improve the condition of the Gulf-Sea route is identified, along with a timeline for dredging in the area.