Day two Netherlands-Icke · 6 The WFD Explorer maps (EQR and concentrations) reports (water...
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Transcript of Day two Netherlands-Icke · 6 The WFD Explorer maps (EQR and concentrations) reports (water...
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WFD-Explorertool for the selection of measures
Joost Icke
WL | Delft Hydraulics
Contents of presentation
• The WFD Explorer:
• Why we made it
• How it looks like
• How it works
• Applications in The Netherlands
• Future developments
communication instrument
knowledge system
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Example: waterboard Vallei & Eem
Waterboard Vallei and Eem~ 35 kilometers
Evaluation of ecological quality in present situat ion
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The Vallei & Eem water system
shallow lake (turbid, no macrophytes)
brooks (meandering, fishes)
channel
inflow from the Rhine
Measures in the lake?Measures in the lake ?
• biomanipulation
• wetlands
• deep pits
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Measures in the river basin ?
Reduce nutrient loading?
• agriculture
• Rhine inflow
• WWTP’s
Amersfoort
Ede
Selection of measures for the WFD
… should be done on the basis of:
• Systems analyses of the water system (understanding ) • Up-to-date, generally accepted knowledge about the impact
of measures on the water quality and the four ecolo gical quality elements
• Discussion with stakeholders• (etc.)
• and for this we developed the WFD Explorer
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(2) select the measures
(1) select a waterbody
(3) Ecological Quality Ratios, Concentrations and Cost
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The WFD Explorer
maps
(EQR and concentrations)
reports
(water balance, ecology, cost etc.)
pie charts of pollution sources
(point sources, catchments, upstream)
Objectives of the WFD Explorer
• Support the drafting of a River Basin Management Plan• Select the (most cost effective) measures for the R BMP• Determination of the good chemical and ecological st atus /
potential of our waterbodies• Stimulate the communication with stakeholders• Encourage uniformity in the knowledge that is being used
communicating vessels
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• The WFD Explorer was developed by a consortium:• National Water Authority: Rijkswaterstaat• Several water boards• Several consultancy firms• Research Institutes (WL | Delft Hydraulics a.o.)
• Prototype (2005) ���� Version 1.00 (2007)
• Sponsored by ‘Leven met Water’ research programme
• The tool can be downloaded for free• The use of the WFD Explorer isn’t prescribed
Developed by a consortium
How it works…
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measure ���� steering variabele ���� impact on ecosystem
flow velocitydepth phytoplankton
measure ���� substances ���� macrophytesconnectivity fisheslight climate macro invertebratesdirectly on ecology
How it works…
knowledge, data and models
River basin database
Knowledge database
computational core
User Interface for End Users
MS Access database
Components
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Typical schematisation
Eemben. Barn. beek
Valleikanaal
Woudenbergse grift / Heiligenbergerbeek
Esv. beek /Hoev. beek
bov. Barn. beek
Modder /Moorster. beek
Lunterse beek
Eemmeer
Nederrijn
Eemnesservaart
30%
70%
~ 35 kilometers
Hydrology
• Water conservation• Water level fluctuations• Restoration of flow dynamics
Hydro-morphology
• Nature friendly river banks• Restoration of meanders• Construction of sediment traps
Water quality
• Reduction of point sources• Reduction of diffuse pollution• Manure policy• Waste Water Treatment Plants
Ecology
• Biomanipulation (fishing)• Nature friendly mowing• Helophytes / wetlands
Pre-defined set of 47 measures
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Ecological Models and Expert Rules
• Database with (statistical) models and expert rules for ecology
• Description of reference situations:• Several (but not all) water types• Algae, Macrophytes, Fish and Macro Invertebrates• Associated ‘Ecological Quality’ for abundance and di versity of
species
• Information on habitat requirements of indicator sp ecies • Publications, literature• Statistical analysis of field data• Expert judgement
• Linking variables such as depth, flow velocity, con centrations to habitat preferences
Different habitats, different species!
deep shallow
clearturbid
bream
roach / perch
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D7
heavily modified water body with limited diversity in water depth (D) and velocity (V)
D7
only 2 of 4 indicator species are present
D6 D6
D5 D5
D4 D4
D3 D3
D2 D2
D1 D1
V1 V2 V3 V4 V5 V6 V7 V1 V2 V3 V4 V5 V6 V7
Depth / velocity ���� indicator species (before)
D7
water body after restoration measures
D7
all 4 indicator species are presentincrease in diversity of depth (D) and velocity (V)
D6 D6
D5 D5
D4 D4
D3 D3
D2 D2
D1 D1
V1 V2 V3 V4 V5 V6 V7 V1 V2 V3 V4 V5 V6 V7
Depth / velocity ���� indicator species (after)
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Top-down approach in computations
Use of WFD Explorer in The Netherlands
• In 2007, the WFD Explorer is being applied by:• Several river basins: Rhine (central, east), Meuse, Scheldt• Many individual water boards• Directorate-General of Public Works and Water Manag ement
(Rijkswaterstaat): Rivers and Lakes
• Originally developed as a communication tool, • However, the WFD Explorer mainly used for selection of measures
• The setup of applications is under a lot of time pr essure
• Most attention seems to go to the effectiveness of measures.
• An indication of the cost per measure is available in the documentation.
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The Netherlands
+ two national applications, for Rivers and Lakes
+ river basins in Belgium and Romania
Training of modellers and water managers
• Courses, Lectures, News Letters• Pilot projects (2006), participation in projects (2 007)• Manuals, Website, Helpdesk
October 2006
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Setup of an application for a River Basin
1. Definition phase• Important issues / waterbodies in River Basin• Pre-selection of measures that should be evaluated
2. Modelling phase• Data collection• Set up of schematisation, water & mass balance, meas ures
3. Validation phase• Validation of water quality model• Acceptance by experts
4. Application phase• Selection of measures for River Basin Management Pla n• Communication with stakeholders
Position of WFD-Explorer: between policy and research
detailed processand systemstudies
(interactive)policy process
WFD-Explorer:planning kitfor WFD
integration ofdetailed research /substudies
promotion ofinformationexchange
information requirementsof stakeholders
direction of moredetailed research
the idea in 2005
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detailed processand systemstudies
(interactive)policy process
WFD-Explorer:planning kitfor WFD
integration ofdetailed research /substudies
promotion ofinformationexchange
information requirementsof stakeholders
direction of moredetailed research
Improve ecological knowledge rules !!
Improve the User Interface !!
reality in 2007
Peer review of knowledge database for Ecology• The ecological database has been reviewed twice by
independent experts• Many gaps in knowledge, confidence sometimes low• Succesfull application of the WFD Explorer depends on
further development and improvement of ecological knowledge
• So far, the database has been locked (uniformity)• We will open up the database for experts • Documentation by means of a ‘wikipedia’
• Development of ‘diagnosis tools’ is necessary
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Watertype Omschrijving Vis Macrofauna Macrofyten Fytoplankton
R4 Permanente langzaam stromende bovenloop op zand
R5 Langzaam stromende middenloop/benedenloop op zand
R6 Langzaam stromend riviertje op zand/klei
R9 Langzaam stromende bovenloop op kalkhoudende bodem
R10 Langzaam stromende middenloop op kalkhoudende bodem
R11 Langzaam stromende bovenloop op veenbodem
R12 Langzaam stromende middenloop/benedenloop op veenbodem
R13 Snelstromende bovenloop op zand
R14 Snelstromende middenloop/benedenloop op zand
R15 Snelstromend riviertje op kiezelhoudende bodem
R17 Snelstromende bovenloop op kalkhoudende bodem
R18 Snelstromende middenloop/benedenloop op kalkhoudende bodem
M1 Gebufferde sloten
M3 Gebufferde (regionale) kanalen
M5 Ondiep lijnvorming water
M6 Grote ondiepe kanalen
M7 Grote diepe kanalen
M8 Sloten op veen
M10 Laagveen vaarten en kanalen
M11 Kleine ondiepe gebufferde plassen
M14 Ondiepe gebufferde plassen
M20 Matig grote diepe gebufferde meren
M21 Grote diepe gebufferde meren
M22 Kleine ondiepe kalkrijke plassen
M23 Ondiepe kalkrijke (grotere) plassen
M25 Ondiepe laagveenplassen
M27 Matig grote ondiepe laagveenplassen
M30 Zwak brakke wateren
M31 Kleine brakke tot zoute wateren
Legenda: Uitstekend
Goed
Voldoende
Matig
Onvoldoende
Niet van toepassing
Geen rekenregel beschikbaar
fish – macro invertebrates – macrophytes - fytoplankton
lakes and channles rivers and brooks
Peer Review March 2007
Example of Wikipedia - ‘Dare to share’
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Stakeholder
Scientist
Policy maker
Operational manager
Consultant
Government Official(decision making)
Stakeholder
Scientist
Policy maker
Operational manager
Consultant
Government Official(decision making)
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Stakeholder
Scientist
Policy maker
Operational manager
Consultant
Management summary (powerpoint presentation)
Detailed information…GoogleEarth
Operational WFD information system
Chemical and ecologicalstatus, exploration of
measures, field information
Information gatheringand communication
Scientifical knowlegde
Government Official(decision making)
Conclusions
• Widespread use of the WFD Explorer in The Netherlands• This encourages uniformity in the way WFD measures are
selected and founded by knowledge• The WFD Explorer bridges science and common practice in water
management
• However…• At the moment the tool is used for analysis by wate rboards and
consultants, is stead of communication by stakehold ers• Further development of the knowledge on ecology and the impact
of measures is necessary• Much more information is needed for a good discussi on (fact
sheets, diagnosis, advise on measures…)
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More information
• The WFD-Explorer is freeware and can be downloaded from the website www.krw-verkenner.nl
• Contact via e-mail: [email protected]• Helpdesk: [email protected]