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Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary.

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Presentation on theme: "Safety: Example Schelde. The SIGMAPLAN 1977 Upgrade of safety level is necessary."— Presentation transcript:

1 Safety: Example Schelde

2 The SIGMAPLAN 1977

3 Upgrade of safety level is necessary

4 The SIGMAPLAN 1977 a) Heithening and strengthening dikes b) aanleg gecontroleerde overstromingsgebieden c) bouw stormvloedkering te Oosterweel zone 1 : 11,00 m TAW zone 2 : 8,35 m TAW zone 3 : 8,00 m TAW

5 The SIGMAPLAN 1977 a) verhogen en verzwaren waterkeringen b) Construction of inundation areas c) bouw stormvloedkering te Oosterweel KBR

6 The SIGMAPLAN 1977 Zeeschelde Durme Tielrodebroek

7 The SIGMAPLAN 1977 a) verhogen en verzwaren waterkeringen b) aanleg gecontroleerde overstromingsgebieden c) Construction of stormsurge barrier at Oosterweel KBR

8 90 m 54 m hefdeuren segmentkleppen 120 m The SIGMAPLAN : EUR 123 m

9 Hoe het SIGMAPLAN actualiseren ? Nete’s Dijle Zenne Rupel Durme Zeeschelde

10

11 Ecology: CRT - Introducing estuarine ecosystem - Tidal regime in area - Two times a day! Ring DikeLowered FCA dike FCA estuary Outlet polder Concept FCA – CRT safety, ecology and a new ecosystem Safety: FCA - Lowered dike stretch - Critical tides: whole storage capacity - Only few times/year! Ring DikeLowered FCA dike CRT estuary Outlet Inlet polder

12 Pilot project Lippenbroek 10 ha of tidal nature developping: May 2008

13 Introducing macrotidal regime  Reduction of high water level by 3 meter  No reduction of spring – neap variation

14 Water quality: oxygen

15

16 “reverse tidal pumping”

17 Alternative disposal strategy


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