In the coastal area with islands, local hydrographic changes are caused by causeways and bridges built in water bodies. As the natural water flow is prohibited, the changes in the water areas are like those of eutrophication, whereby water quality, vegetation, seabed quality and sea animal population will change. The effects can reach hundreds of meters for example from the causeways.
The first phase of the measure will identify sites with deteriorated local flow conditions in coastal areas, and in the second phase, rehabilitation measures will be drawn up to improve the conditions.
Ministry of the Environment, rannikon ELY-keskukset