Slide 1

Water and climate

J. SchellekensCheck for yourself at:http://www.klimaatscenarios.nl/

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**Water and climate (change)

Over all the continents we have about 860 mm/y or precipitation about 537 mm evaporates about 334 mm runs of via rivers into the oceans If this balance changes, we can have more floods or droughts

What we do with the water make the difference if we have a problem or not when the balance changesThe consequences are local and we try to determine the water budget at the global scale for climate studies

Water is everywhere*

And what happens to the water in the reservoir?

Different interaction with the rainGirl looks at water standing in the rain, is aware of water level (she lives in a houseboat) and feels the rain (but does not care)Fijians with knives prepare to cross a flooded river. It is warm so they do not case about the rain falling unto them but the stuff upstream gives them a headacheThis reservoirs is on the Border of Azerbijjan and Armenia. The catchment is in armenia.

It becomes a Melon and gets taken to town (by Lada or Wolga)

The water in the reservoirs gets into Melons and is taken to town!

Photos: Micha WenerOur measurements are uncertain..

One happy dog!

Back to home

30 September 2010 Melbourne, Australia

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Sea level rise NL

Delta scenario: 120cm

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Storm surge barrier in Rotterdam waterway

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The Flood Protection Act (1996)The Flood Protection Act defines:

Safety standards per dike ring area (freq. of exceeding of design water level)

Responsibilities of parties involved

A 5-yearly safety assessment of all primary flood defences

Guidelines for safety assessment & design of flood defences

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30 September 2010 Melbourne, Australia

Design discharge of the River Rhine in the Netherlands

10000

12000

14000

16000

18000

20000

1920

1940

1960

1980

2000

2020

1976

1956

1926

1992

2001

?

Q m3/s

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Sea-level rise scenarios of delta Committee

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Some climate change scenarios expect very dry conditionsCurrent According to the KNMI W+scenario

College tools for water policy analysis, invited lecture. UT-Civiele techniek, Enschede, April 2, 2012Delta Commission, 2008:

The threat is not acute, but measures to improve flood risk management and fresh water supply should be prepared urgently!

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The cabinet has asked for recommendations from the Delta Commission, a government commission chaired by Prof. Dr. C. P. Veerman, regarding the protection of the Netherlands against the consequences of climate change. This also entails the question of how to set up the Netherlands so that it is climate resistant for the long term, safe from flooding, and continues to be an appealing place to live, work, for recreation, and to invest in.The Delta Commission's main message is: the threat is not acute, but it is very urgent that the management of flood risk management and the fresh water supply be dealt with. The Netherlands has fallen behind. The currently applicable standards for flood protection are not met and this must be made up. Furthermore, the standards are outdated. The Delta Commission has advised that the flood risk management standards be re-adjusted upward. In addition, the Netherland's fresh water supply is threatened by the increasing sea level, declining river drainage during the summer, long-term dry periods, and salt infiltration via rivers and ground water. The Delta Commission has developed a future vision reaching further than 2010. Because it is necessary to take action now to increase the level of safety, the Delta Commission has formulated an integrated recommendations package for the short and middle term. These recommendations emphasize the joint development of changes in the climate and other ecological processes. The implementation of these recommendations will prepare the Netherlands to better handle climate change and create new opportunities. To implement the content recommendations, the Commission proposes the setting up of a Delta Programme (the map on the sheet gives an overview of proposed measures in the Delta Programme). The political-government recommendations indicate that the Delta Programme must be established in a Delta Act to meet the financial (Delta Fund) and regulatory aspects. The Delta Commission also recommends that a Delta Commissioner be named who will translate the national objectives for the next 100 years into the regional objectives needed for the first 25 years.

14RecommendationsGeneral10x less flood riskPrepare for drought

Regional:North Sea coast (coastal extension)Wadden region (coastal nourishment)SW Delta (restore tidal dynamics)River regions (max 18,000 / 3600Rijnmond (open/closed)IJssel Lake area (drainage + reservoir: follow SLR + 1,5m)

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14

So what does this mean: Our rivers, floods

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So what does this mean: Our rivers, droughts

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More of this in NL

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Check for yourself30 September 2010 Melbourne, AustraliaCheck for yourself at:http://www.klimaatscenarios.nl/https://www.rijksoverheid.nl/onderwerpen/deltaprogramma