Innovations for Global Water
Challenges
Deltatechnology
Jaap Kwadijk,
Director of Science. Deltares,
Prof. Climate and Watermanagement, Uni. Twente
14th May 2014 – Unesco-IHE - Delft
Why is delta technology potentially a growing market
• 50 % of the world population lives
in coastal, delta’s and river areas
• This number is expected to
increase
• Sea level rise increases flood risk
and hampers the fresh water
supply (last estimate : 3m????)
• Many Delta’s are subsiding
(several m / century)
Many urban areas under-protected against
floods
23 mei 2014
What are Delta’s
23 mei 2014
That brings the Dutch in an interesting position
Greetings
from Holland
Seem to manage their own delta quite reasonable
Leaving 60% of The Netherlands with a
completely regulated water management
system
We keep innovating (building)
23 mei 2014
We build nature
Restoration of Mine Tailings Ponds (equivalent to
restoration of small deltas and coastlines)
23 mei 2014
We think about other approaches
HYBRID ENGINEERING for
rehabilitation of mangrove-mud coasts
the bridge between science and engineering
Mangrove erosion = a World-wide problem
Suriname
Indonesia
Suriname
Thailand
coastline 2013
coastline Nov 2001
400 m
Thailand
British Guyana
April 2014
these are remnants of
coastal breakwaters, put
in place after 2008
Response
•
•
Hard structures on muddy beds become easily unstable:
Mangrove replantation. Success rates of 5 – 10 %.
coast-protecting groins, Georgetown
BUT after some time,
this is the picture
April 2014
Permeable dams to catch sediment
Permeable dams to reclaim the land
Permeable dams mimic mangrove
Salt marsh works
in NL
Evolution in time
April 2014
Remarkable software
the bridge between science and engineering
30 april 2014
3Di Subgrid flooding:
Making high resolution accessible
Arthur van Dam, Guus Stelling, Wytze Schuurmans
http://www.3di.nu
Modern day LiDAR-altimetry
<= 0,5 x 0,5 meter resolution
November 21, 2012
Come and try 3D glasses yourself!
November 21, 2012
D-Flow Flexible Mesh (1D-2D-3D): San Francisco Bay
river
estuary
sea
Delft-FEWS: open Forecasting, Evaluation and Warning System
Building a collaborative community ...
•Joint research & development:
• research programs
• software development projects
• …
The Dutch keep on doing experiments
Markerwadden
23 mei 2014
Tidal Turbines (SSB, E-Scheldt)
Andijk
World famous experiments: Sand engine 2011 2012
2011 2012
JulyOctober
2011 January
March
2012
September
2011
ICCE2012_Santander
photos:
Rijkswaterstaat; Joop van21Houdt
Delta planning is changing, trend 2 bottom-up
TOP->DOWN
Delta works 1960-1980
Dikes and barriers
BOTTOM->UP
Delta programme 2010-> Re-design of the
water management in the Netherlands
22
Challenging topics for today
• Water and sustainability
• Urban development
• IT in Deltatechnology and planning
What I learned last week:
The innovation is not the technology,
it is what people do with it.
Steve Jobs, at the release of the I-phone