Coastal reservoir

Advantages

Unlike land-based water reservoirs, there is no land submergence in the case of coastal reservoirs. They store water without disturbing land use by replacing standing salt water of the sea area by fresh water from a river. The coastal reservoir area is separated from the sea by building earth dikes, e.g. by dredging. Fresh water from these reservoirs can be used for irrigation, drinking water and industrial purposes. Sometimes the reservoirs are used for flood control and land reclamation. The social and environmental impacts of coastal reservoirs are often negligible compared to land-based water reservoirs. The construction costs are a few times less than the costs of land-based reservoirs since there is no expenditure for acquiring the vast land area, the submerged immovable properties and the rehabilitation of displaced people. The sea side of the coastal reservoir can also be used for locating a deep sea harbor.