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Published byOsvaldo Bridgewater Modified over 9 years ago
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Natural Flood Defences Rhine/Meuse Wouter Helmer Ark Foundation
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Ark Foundation nature and landscape development More room for natural processes
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Ark Foundation main principles More room for natural processes (Economic) Partnerships
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Ark Foundation main principles More room for natural processes (Economic) Partnerships Local commitment
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Ark Foundation working method Regional vision Local examples Upstream:Ambleve (Ardennes) ‘Mountains of Water’Geulle (Limburg-NL) DownstreamMillingerwaard ‘Living Rivers’(Gelderse Poort)
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Mountains of Water Retention in brooks (Ambleve, Ourthe, Geulle, Worm, Ober-Main) Waterretention in lower mountains (Ardennes, Eiffel, Schwarzwald)
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Mountains of Water Waterretention in lower mountains (Ardennes, Eiffel, Schwarzwald)
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Mountains of Water Waterretention in lower mountains (Ardennes, Eiffel, Schwarzwald) Meuse: reduction of discharge by restoration of the natural sponges in brooklets Ardennes : 3000-3500 m3/s Borgharen: ca.6 % reduction!
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Mountains of Water -Remove campshedding -Let falling trees deregulate stream -Clay-layer from centuries of unnatural sedimentation will be removed by the brook Retention in brooks (Ambleve, Ourthe, Geulle, Worm, Ober-Main)
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Mountains of water
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Mountains of Water Retention in brooks (Ambleve, Ourthe, Geulle, Worm, Ober-Main) 19241975 1989
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Mountains of Water Retention in brooks (Ambleve, Ourthe, Geulle, Worm, Ober-Main) Meuse: reduction of discharge by restoration of the natural floodplains of the larger brooks: 3000-3500 m3/s Borgharen: ca. 5 % reduction!
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Living Rivers Clay excavation Sidechannels Herbivory Cyclic rejuvenation
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Living Rivers Clay-excavation
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Living Rivers
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50.000 new houses = ca. 150 ha new nature
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Living Rivers Sidechannels
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Living rivers 220 km new side channels Compensation for natural vegetation and new riverdunes
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Living Rivers Herbivory Wild horses and cattle animal/2-4 ha yearround delay of forest development Beaver 4000 kg/year/beaver local clearcutting of riverine forests facilitates grazing
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Living Rivers
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16.000 m3/s: solutions within Riverforelands 18.000 m3/s: Old Rhine/Linge-floodplain
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Living Rivers
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