Linking Economic Accounts to the River Basin

1
Linking Economic Accounts to the River Basin

• based on Integrated river basin accounting in
  the Netherlands and the European Water Framework
  Directive (Brouwer et al, Statistical J. of the
  UNECE 22 2005)

2
Outline

• Water Framework Directive and Hybrid accounts
• How to link the Regional Economic Accounts to the
  River Basins
• Country experiences
• Netherlands
• Sweden
• Australia

3
WFD and Hybrid Accounts

• WFD increase in demand for water-related data
• Use Hybrid Accounts which provide information on
  
• - Intensity of water use by branches of
  industry
• - The physical flows of supply of water
  services
• - Production costs of water services
• - Environmental taxes related to water
• at National and River Basin level

4
Dutch River Basins

• As Rhine covers 70 of Dutch territory is
  split-up
• 4 sub-regions North, East, West and Centre

5
River Basins vs Regional Economic Accounts
6
Regional Economic Accounts

• 12 Provinces
• 40 Administrative Regions or COROP
• Each COROP region consists of several
  municipalities
• 512 Municipalities
• Regional accounts are at COROP level
• Focus on the production process in each unit, in
  the various regions

7
Assigning Regional Accounts to River Basins (1)

• ECONOMIC DATA
• 23 Regional Accounts fall directly within a
  specific River Basin
• Other 17 overlap economic data allocated based
  on estimated percentage of employees working in a
  specific River Basin
• Reason no economic data available at individual
  company level
• Method
• Identify specific branches of industry in these
  COROPs
• Identify number of employees in these branches
• Identify municipalities where these business
  units are located
• If municipalities fall into 2 River Basins
  Postal codes
• If single postal code falls into 2 River Basins
  business units and employees are allocated based
  on area of the postal code falling in that River
  Basin

8
Assigning Regional Accounts to River Basins (2)

• EMISSION DATA
• Supplied by Regional Emission Registration (level
  of individual plants)
• If location of activity does not correspond with
  location of emission source, emissions are
  allocated to location of activity
• WATER DATA (ABSTRACTION AND RETURNS)
• National Water Survey conducted every 5 years
• 7500 businesses

9
Sweden

• WATER DATA (ABSTRACTION AND RETURNS)
• Allocation of 289 municipality data to 8 River
  Basins, using GIS (Geographical information
  system)
• 119 entirely within specific River Basin
• 165 intersected with only minor part or all major
  urban areas located within a River Basin
• 5 were disaggregated based on population
  percentages in urban areas
• Survey on Manufacturing industry and Municipal
  Waste Water Treatment Plants leading to data for
  114 drainage basins
• Abstracted water for own use by households not
  connected to the public network estimated using
  real estate register 189 litre/day

10
Australia

• AGRICULTURAL WATER USE
• Area-weighted-concordance method used to provide
  estimates on agricultural use at River Basin
  level
• Agricultural census provides estimates on
  irrigated area by type of crop (hectares)
• Calculate water use per hectare per crop
• Calculate Total Agricultural Water Use per
  Statistical Local Area
• Compare maps of Statistical Local Areas and River
  Basins allocate water use based on percentage of
  overlap of SLA with RB

11
Comparison of approaches

• COROP (NL) vs
• municipality level (Sweden) vs
• Statistical Local Area (AUS)
• Employees (NL) vs
• inhabitants (Sweden) vs
• area (AUS)
• Different country-specific circumstances

12
Results (Netherlands)

• Distribution of economic value added generated
  in the various river basins in the Netherlands

13
GDP and environmental indicators national (NL)

• Suggests that water is used in a more
  efficient way

14
GDP and environmental indicators SCHELD River
Basin (NL)
15
Water use in 2001 (NL)
16
Confidentiality (NL)

• It concerns economic data and water flow data
• Rules
• Sector should consist of at least 3 or more
  companies
• The largest company cannot employ more than 75
  of employees in a specific region
• Largest company in a specific branch of industry
  cannot employ more than 70 of total freshwater
  in that region
• In terms of representation confidentiality
  problems are solved by presenting two sectors
  together
• Example Water use per River Basin per sector
  only compiled for 2 largest River Basins due to
  confidentiality reasons