Dutch Government Water Management

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Presented by representative of the Dutch Government, focussing on the past, present and future ways of managing water within the Netherlands, dealing strongly with flood prevention and safety measures

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  • A typical cross section of our rivers consists of a navigation channel with groins, mostly embanked by low (summer) dikes, a flood plain and the main dikes.  
  • Finally some examples of measures.
  • Dutch Government Water Management

    1. 1. Watermanagement in the Netherlands Past, Present and Future Ruud Staverman Rijkswaterstaat
    2. 3. The Netherlands: Population: 16 million inhabitants Area: 41.526 km2
    3. 4. The Netherlands: Population: 16 million inhabitants Area: 41.526 km2 = US States Vermont + New Hampshire (1.8 million)
    4. 5. 7000 Bc 5500 Bc
    5. 7. Precipitation and evapotranspiration
    6. 8. The Netherlands: a Delta of 4 international rivers
    7. 9. Past: A constant fight against the water Amsterdam Haarlem St Elisabeth flood of 1421 Alblasserwaard
    8. 10. Reclamation in the 17 th Century Drainage by windmills
    9. 11. Several floods
    10. 12. Landreclamation in the 20th century
    11. 13. Storm disaster of February 1 st , 1953
    12. 14. Flooded area in 1953, 1800 casualties FLOODED
    13. 15. The Deltaworks
    14. 16. Maeslantkering
    15. 17. Present: the Vulnerability for flooding
    16. 19. the “(pair of) scissors”: Subsidence and Sea level rise Past Present, Future
    17. 20. Will this be the future? Dike Increase of water discharge Water level compared to the surface level Soil subsidence = Zero level
    18. 21. Present and future : Urban development, the need for housing
    19. 22. What future to anticipate on? <ul><li>Sea level rise: </li></ul><ul><li>2050: + 0.4 m </li></ul><ul><li>2100: + 0.65 - 1.30 m </li></ul><ul><li>2200: + 2 - 4 m </li></ul>
    20. 23. Climate change (1): <ul><li>Seawater expands + ice melts: sealevel rises </li></ul><ul><li>Period of heavy rainfall: damage </li></ul><ul><li>Rivers discharge more water in the winter period </li></ul><ul><li>Result: Increase risks of flooding </li></ul>
    21. 24. Climate change (2) <ul><li>Extreme droughts in summer: damage in agriculture, low waters: inland navigation, and additional soil subsidence </li></ul><ul><li>Salt intrusion from the sea: </li></ul><ul><ul><li>Problems with intake of drinking water </li></ul></ul><ul><ul><li>Damage for agriculture and industries </li></ul></ul><ul><li>Higher temperature of riverwater: Cooling problems for power plants </li></ul>
    22. 25. Future River discharges: <ul><li>Summer: </li></ul><ul><li>1700 m 3 /s  </li></ul><ul><li>700 m 3 /s in 2100 </li></ul><ul><li>Winter: </li></ul><ul><li>16.000 m 3 /s  </li></ul><ul><li> 18.000 m 3 /s in 2100 </li></ul>
    23. 26. R3294 E000418n Room for the Rhine branches
    24. 27. The high waters of 1993 and 1995 lead to the implementation of Delta (major rivers) plan
    25. 28. Future: <ul><li>We stay in the (floodprone) part of the Netherlands, </li></ul><ul><li>Solidarity among inhabitants and generations </li></ul><ul><li>Work with natural processes “building with nature” Your solutions: </li></ul><ul><li>Rivers? </li></ul><ul><li>N orth Sea coast? </li></ul><ul><li>IJsselmeer area? </li></ul>
    26. 30. ? Rivers ?
    27. 31. Rivers: De-poldering Building houses on raised platforms /mounds along the dike Overdiepse polder
    28. 32. Rivers: Dike relocation Hondsbroekse Pleij
    29. 33. Rivers <ul><li>‘ Room for the River’ </li></ul><ul><li>Land aquisition on strategic locations </li></ul><ul><li>International catchmentwise cooperation </li></ul>
    30. 34. A Deltaplan for the large rivers 39 Measures, until 2015
    31. 35. ? N orth Sea coast ?
    32. 36. North Sea Coast: Nourishment works, Follow the sealevel rise strandsuppletie onderwater suppletie
    33. 37. North Sea Coast: Building with Nature, use sand from the Sea
    34. 38. ? IJsselmeer area ?
    35. 39. IJsselmeer area <ul><li>IJsselmeer remains strategic fresh water reservoir </li></ul><ul><li>Water level IJsselmeer rises with sea level, up to 1.5 m above present  free discharge </li></ul><ul><li>Water level Markermeer remains unchanged </li></ul>
    36. 40. Costs: <ul><li>< 2050: </li></ul><ul><li>1,2 tot 1,6 billion euro /yr </li></ul><ul><li>2050 – 2100: </li></ul><ul><li>0,9 tot 1,5 billion euro /yr </li></ul><ul><li>Beach nourishment for coastal land reclamation: 0.1 – 0.3 billion euro/yr </li></ul>
    37. 41. The End Thank you for your attention

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