Posts Tagged ‘Bős-Nagymaros’

Analysis of the Szigetköz inland delta

03:10 PM


(From previous issue No.36)

It is necessary to narrow the title immediately, because this publication talks about not the whole Szigetköz area but a smaller and most important and most neuralgic part of that which holds the fate of the entire region. This smaller part is the floodplain of Szigetköz region. This place is a symbol of the Hungarian political system change and the exact place of that drastic human intervention redraw radically the upper section of the Danube in Hungary for a longterm by a Czechoslovak-Hungarian political decisions series (GabcikovoNagymaros System). Slovaks are unilaterally implemented the so-called C variant here by the effect of the contemporary Hungarian civil protests. Since that time the floodplain area is an unresolved complex problem nodule from the viewpoint of nature protection, ecology, hydrology, forestry, ecotourism, shipping and water quality. Nearly fifteen years of our research and planning activities try to find complex landscaping solutions for these problems. Finally it has been demonstrated in 2007 by a physical hydrology model experiment series that there is a better water supply solution for this region. And this solution could be strengthening the historical characteristic of the Szigetköz Inland Delta where the natural, economic and social aspects could be also fulfilled.

Attempt at modelling the meandering

Attempt at modelling the meandering

The Szigetköz floodplain of the Danube is a complex branch system, an inland delta which is not only important as an hydrological and ecological subsystem but also as an strategic drink water resources stockholder in Hungary, a forestry potential and a huge gravel wealth. If we see the whole picture then we must say some words about the land use potentials and the possibility of fishing, ecotourism and tourism opportunities for yachting.

The diversion of the Danube and the realization of C variant (power canal between Hrusov and Gabcikovo) accelerated and amplified the negative processes which was already exist in the Old Danube and the side branches relationship but it was a slowly culminating problem before that. The ecologically negative water management processes of the last century closed the side branches from the main branch of the Old Danube and made a slowenergize, stagnant water conditions inside the side branch system while accelerated a faster water on main branch of the river which dug deep the riverbed. The very intensive gravel mining in the past was further increased the sinking of the main riverbed. This is came up before the C variant and caused by negative trends ecologically means water quality of side brunch system, the qualities and quantities the patterns of aquatic habitats and fish cradles and had a negative impact on freedom of movement for all aquatic organisms and 'blue corridors' existence. Parallel this calmed water in side brunches caused an ecological shifts inside the historical ecotopes of native waterside vegetation.