fokkens b. ecrr, flood prevention and river restoration, room for the river

FLOOD PREVENTION AND

RIVER RESTORATION

ROOM FOR THE RIVER

Bart Fokkens

Chairman European Centre for River Restoration

21-11-2011

CHANGES IN THE NATURAL ENVIRONMENT OF A RIVER

21-11-2011 2 WWF6 ECRR Seminar

Ljubljana 16-18 November 2011

LOSS OF FLOODPLAIN SURFACE IN UPPER RHINE

0

20

40

60

80

100

1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000

loss due to dike construction works

(HonsellTulla)

loss due to erosion (Basel-Breisach)

loss due to construction works until

Iffezheim

remained floodplain



ldquoECOLOGICAL OBSTACLESrdquo



RR READY FOR THE FUTURE

bull Design rivers for the future with respect for the past

bull Multidisciplinary adaptive approach acceptance of non-stationary

bull Public involvement social processes and interactions important with increased scale

bull Multi-criteria analysis cost benefit analysis and economic evaluation

bull Adequate (long-term) multi-level monitoring



EU AND ldquoIWRBrdquo bull Prevent deterioration and achieve a good ecological status

bull Work with the river and not against it

bull From sector amp technical to integral amp natural

bull From river basin to local scale

bull Participatory planning

bull Socio-economic analyses 09122009

Basin Branch Floodplain Ecotope



RESTORING HABITAT CONNECTIVITY



RESTORATION MEASURES



MITIGATION MEASURES



LOST ROOM FOR RHINE AND MEUSE



FLOOD RISK MANAGEMENT RHINE RIVER



NEAR FLOODINGS 2003 2005



DIKE STRENGTHENING



ROOM FOR THE RIVER PRGRAMME



GOALS AND CONDITIONS bull Safety stabilizing critical water levels despite

increase of design discharge of 1000 m3s

bull Increase of spatial quality ndash Socio-economic value

ndash Ecological value

ndash Aesthetic cultural value

ndash Sustainability

bull Implementation in partnership between national and regional authorities

bull Completion deadline 2015

bull Put 2015 plan in perspective of long-term vision (2050+)

bull Strictly limited budget of 22 billion Euros

21-11-2011 15

WWF6 ECRR Seminar Ljubljana 16-18 November 2011

TOOLBOX OF MEASURES (green = best potential for ecological restoration)

bull Inside existing floodplain

ndash Riverbed deepening

ndash Groin improvement

ndash Creating side-channels

ndash Removing obstacles

ndash Strengthening of dikes (final option if no room available at reasonable costs)

bull Outside existing floodplain

ndash Detention areas

ndash Bypasses lsquogreen riversrsquo

ndash Widening of floodplain by replacement of dikes or depoldering

Selection of measures based on

cost-effectiveness contribution to spatial quality and administrativepolitical feasability



DECISION MAKING PROCESS RHINE RIVER

2003600 individual measures

measures from long-term

survey

regional design workshops with

stakeholders

13 strategies

5 alternatives + extra modules

2007Approval by parliament = PLAN

2005preferred alternative

Quantity Assessment of alternatives Quality

Discussion-

and decision-

support

Analysis

discussion and

negotiation



PROGRAMMATIC APPROACH Alternative measures could be developed by partners until summer 2008 within strict limits of

bull Political and Public support

bull Effectiveness (safety + spatial quality)

bull Within available budget or provide extra

bull Completed in 2015

21-11-2011 19


RIVER RESTORATION ldquoROOM FOR THE RIVERSrdquo

bull National programme with various measures by 2015

bull Flood alleviation and ecological restoration

bull Costs 22 Billion Euros



BOTTLENECK NIJMEGEN





ARTIST IMPRESSION



FLOODPLAIN RESTORATION ARNHEM NL

Satellite image 1995



BIESBOSCH AREA



lsquoROOM FOR THE RIVERrsquo NOORDWAARD

From Google

lsquoDepolderingrsquo



BIESCHBOS IN 1850





THANK YOU



CHANGES IN THE NATURAL ENVIRONMENT OF A RIVER




0

20

40

60

80

100

1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000


(HonsellTulla)



Iffezheim

remained floodplain





























MITIGATION MEASURES












DIKE STRENGTHENING
















21-11-2011 15




















survey


stakeholders

13 strategies





Discussion-

and decision-

support

Analysis

discussion and

negotiation








21-11-2011 19








BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU




0

20

40

60

80

100

1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000


(HonsellTulla)



Iffezheim

remained floodplain





























MITIGATION MEASURES












DIKE STRENGTHENING
















21-11-2011 15




















survey


stakeholders

13 strategies





Discussion-

and decision-

support

Analysis

discussion and

negotiation








21-11-2011 19








BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU





























MITIGATION MEASURES












DIKE STRENGTHENING
















21-11-2011 15




















survey


stakeholders

13 strategies





Discussion-

and decision-

support

Analysis

discussion and

negotiation








21-11-2011 19








BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU












DIKE STRENGTHENING
















21-11-2011 15




















survey


stakeholders

13 strategies





Discussion-

and decision-

support

Analysis

discussion and

negotiation








21-11-2011 19








BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU
















21-11-2011 15




















survey


stakeholders

13 strategies





Discussion-

and decision-

support

Analysis

discussion and

negotiation








21-11-2011 19








BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU





















survey


stakeholders

13 strategies





Discussion-

and decision-

support

Analysis

discussion and

negotiation








21-11-2011 19








BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU








21-11-2011 19








BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU









BOTTLENECK NIJMEGEN





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU





ARTIST IMPRESSION







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU







BIESBOSCH AREA




From Google




BIESCHBOS IN 1850





THANK YOU




From Google




BIESCHBOS IN 1850





THANK YOU



BIESCHBOS IN 1850





THANK YOU





THANK YOU



fokkens b. ecrr, flood prevention and river restoration, room for the river

Technology