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Linking Economic Accounts to the River Basin

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). Outline. Water Framework Directive and Hybrid accounts

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Linking Economic Accounts to the River Basin

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  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

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