Future
The Dutch government has decided to undo most of the reclamation and give it back to nature and to reconnect the main rivers with the Biesbosch creeks. This decision has been made as a result of extremely high river discharges in 1993 and 1995. This means that a large part of the Biesbosch will return to its original state: an interconnected network of rivers and creeks, serving as an inland river delta. The area can then be used as a natural buffer to prevent major floods and to lower the risk of very high river levels. This will also restore some of the natural situation and will result in an expansion of the habitat of many animals.
Especially the beaver population could profit from these hydrological changes. It would also hopefully create the right conditions for the return of the Osprey and the White-tailed Eagle as breeding birds. Because of recent nature development of new wetlands the great egret and the little egret have already become familiar elements in the Biesbosch today. There is also an increase in the population of bitterns and kingfishers.
There are also plans to restore the estuary function of the Haringvliet and Hollands Diep, restoring the natural shift from fresh to salty water and allow the return of the tides in the Biesbosch. A first step will be opening some of the sluices of the Haringvlietdam. This will result in a minimal return of tidal effects without having a dramatic impact on the landscape, because a full opening of the dam will make most of the surrounding farming areas unusable, as a result of the influx of salty water. One should note the fact that in times of severe floods coming from the North Sea, the dam will still be able to close and serve in a similar way as the Oosterscheldekering.
The partial opening of the Haringvlietdam will create an opportunity for migrating fish to enter the Rhine and Meuse rivers, restoring the natural situation. This will hopefully result in the return of the salmon, trout, shad, smelt and many other species of fish. It will also create opportunities for the almost extinct southern Dutch population of seals (now mostly restricted to parts of the Oosterschelde). Seals used to be a common sight in the Biesbosch despite the fact that the area is dominated by freshwater. Their presence ended in 1970, although a few individuals somehow managed to reach the Biesbosch afterwards. The partial opening of the Haringvlietdam will restore some of the natural situation.
Read more about this topic: De Biesbosch
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