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Freshwater management in the Scheldt basin and ... WATERBOUWKUNDIG LABORATORIUM MINISTERIE VAN DE...

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  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    Freshwater management in the Scheldt basin and

    consequences for the discharges in the Zeeschelde

    K. Van Eerdenbrugh, F. Mostaert, J. Baetens, J. Balduck

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    THE FLEMISH REGION

    The whole world is like the human body with its various members. Pain in one member is felt in the whole body.

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    THE FLEMISH REGION

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    THE MAIN FLEMISH CATCHMENTS

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    FRESHWATER MANAGEMENT

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    FRESHWATER MANAGEMENT

    LOW FLOW STRATEGY:

    The choice of an effective set of measures (permanent and operational) for dry periods in order to use the available amount of water as efficiently as possible

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    0

    2

    4

    6

    8

    10

    12

    14

    16

    0,1 1 10 1

    Herhalingsperiode [jaar]

    A fv

    oe r [

    m 3/

    s]

    Figuur 1: Fréchet verdeling in relatie tot de herhalingsperiode van de gebeurtenis voor de afvoeren op de Dender te Dendermonde Bron: Soresma

    Flanders: 540 m3/y/p

    INVENTORY

    QUANTITATIVE ASPECTS

    • Statistical analysis of low flows and water levels

    • Water balance of the subcatchments

    Grote Nete: 1200 m3/y/p Dender: 680 m3/y/p

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    • Salt intrusion • Navigation• Navigation

    INVENTORY

    DEMANDS (USERS AND CONSUMERS)

    • Treaties and protocols

    • ...

    • Salt intrusion • Water intakes

    • Navigation

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    • minimum discharge or water level

    INVENTORY

    DEMANDS (USERS AND CONSUMERS)

    • necessary intakes for production • consequences in case of shortage

    (as a function of time) • possibility to use other resources

    (temporary)

    • ...

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    INVENTORY

    POSSIBLE MEASURES

    Opinion of the different water users

    Bevaar- bare

    waterlopen

    Onbevaar- bare

    waterlopen

    Industrie - VEV

    Industrie - Electrabel

    Industrie - drinkwater- productie

    Landbouw Natuur - land

    Natuur - water

    Visserij Watersport Frankrijk, Wallonië, Nederland

    communicatie x x x x x x x x x x x lozingen beperken x x monitoring x x onderhoud x x x x onderzoek x opvang water x x x x x x x x x rationeel watergebruik x x x x remediërende maatregelen x scheepvaart x waterbeheersing x x watercaptaties x x x x x x x x

    Bron: Resource Analysis

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    METHODOLOGY

    Translation of shortage into costs

    Long term

    cons eque

    nces

    Indirect effects and costs

    Effects of measures

    (in)direct users

    Possibilities of common use

    Acceptance of measures by users

    Necessary efforts

    Priorities???

    Comm unica

    tion

    Legal context History

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    METHODOLOGY

    Priorities???

    TECHNICAL BACKGROUND Direct effects of measures Indirect effects Long term consequences

    •Acceptance of measures by users

    •Possibilities of common use •Necessary efforts •(in)direct users •Communication

    INTERACTION •Translation of shortage into costs

    •Indirect costs

    COSTS

    Legal context History

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    METHODOLOGY

    Statistical analysis Frequency - duration curves Simplified models

    •Interviews with users and consumers

    •Workshop •Communication strategy

    •Costs - benefits •Multi-criteria

    TECHNICAL BACKGROUND INTERACTION COSTS

    Legal context History Priorities

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    THEORY => PRACTICE

    •Dender •Grote Nete •Inventory other subcatchments

    •Meuse

  • WATERBOUWKUNDIG LABORATORIUM

    MINISTERIE VAN DE VLAAMSE GEMEENSCHAP

    FRESHWATER MANAGEMENT

    We may utilise the gifts of nature just as we choose but in her books the debits are always equal to the credits.

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