Innovative technologies of geoinformation support for hydraulic structures

The paper presents the technologies of geoinformation support within hydraulic structures construction and exploitation at the stage of engineering-geological, engineering-ecological and engineering-hydrometeorological surveys for environmental economics during the implementation of major projects in the field of sustainable development of cities and municipalities. The impact of dredging on the natural environment is considered, and a conclusion about the need to study the rate of sedimentation at different stages of exploration, design, construction, and operation of underwater engineering facilities are made. It is shown how the construction of the Marine Facade of St. Petersburg for receiving tourist ferries changed the need for dredging volumes and how this affected the total cost of work. The port of Bronka in Neva Bay is used as an example of sedimentation study during the period of 2005-2007. The developed technologies should help in managing natural risks in the implementation of major projects in the field of construction and operation of hydraulic structures within the framework of the environmental economics in a changing climate.