Abstract

This article reviews the consequences of man-made burial of river valleys in urban areas. Deep analysis of above-mentioned sources enabled to reveal the consequences of river system destruction in urban areas, located on platforms. Backfilling of the river valleys leads to the following negative changes: surface runoff increases by 200-280%, sediment load increases up to 60-90 m 3 per year by 1 km 2 , suffusion and land subsidence begin to develop within man-made buried valleys (2-3 mm per year). Subsurface flow changes cause progressive groundwater flooding and growing level of water mineralization. Total dissolved solids index grows, these waters become aggressive which results in drainage destruction and damaging of urban infrastructure, such as pipelines and sewerage. Destruction of urban river system leads sharp to the environmental issues: small rivers (including storm drain) accumulate various pollutants and deplete flora and fauna. Karst processes were activated in Moscow a few years after backfilling of the river valleys due to subsurface flow changes.

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