In this study, cohesive sediment depositional areas carried by the Solakh River to the Eastern Black-Sea are examined in the marine environment. Effects of changes in the amount of cohesive sediment entering the sea from Solakh River, sediment drift velocity, direction and magnitude of wind-stream components are observed. For high sediment drift velocity, it is found that the affects of wind-stream components on deposition areas of cohesive sediment are very little. According to the results of the study, entrance angle of the stream mouth effects the deposition areas of sediment in the marine environment. Cohesive sediment depositional areas are examined on the charts by changing one of the parameters in the sediment transport model while keeping others constant.