how can information on benefits support hydrosolidarity · 2013. 6. 13. · how can information on...
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How can information on benefits support hydrosolidarity
Expert Scoping Workshop on Quantifying the Benefits of Transboundary Water Cooperation
IVM, VU Amsterdam, 6 and 7 June 2013
Pieter van der Zaag
UNESCO-IHE Institute for Water Education
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Information – benefits – hydrosolidarity
1. Information on benefits or benefits from information? - the case of Lake Victoria
2. Data sharing & technical cooperation - the case of the Zambezi basin
3. Benefit sharing: joint infrastructure development - four African cases
4. Benefit sharing - the Blue Nile
5. Define system boundaries - watershed, problemshed, precipitationshed, benefitshed
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Information on benefits or benefits from information?
Imprecise information may feed distrust and conflict
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Information
Lake Victoria basin
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Information Water Balance Lake Victoria, 1950-2000 (km3/yr)
114 105
25
33 +1
Source: adapted from LVEMP I Hydrology and Meteorology Report (2005)
Surface area: 67,000 km2
Volume: 2,750 km3
Lake Victoria basin
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Water Balance Lake Victoria, 1950-2000 (km3/yr)
114 ? 105 ?
25 ?
33 +1
Uncertainties create
room for different
explanations
Information
Lake Victoria basin
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Water Balance Lake Victoria, 1950-2000 (km3/yr) Information
Lake Victoria basin
114 ? 105 ?
25 ?
33 +1
“Increased E
due to
increased T”
“Reduced Qin due
to environmental
degradation”
“Reduced Qin due
to increased
abstractions”
“Increased Qout
due to releases
above AC”
“Reduced P
during 2003-
2006 drought”
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Data sharing & technical cooperation
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Zambezi
Data sharing & technical cooperation
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Data sharing & technical cooperation
Zambezi
Monthly average discharge at Cahora Bassa gorge (Source: Fanaian, 2013)
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Data sharing & technical cooperation
Zambezi
Monthly average discharge at Cahora Bassa gorge (Source: Fanaian, 2013)
Dam synchronisation; JOTC:
• enhancing benefits and safety
• decreasing environmental damage
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Data sharing & technical cooperation
Zambezi Dam synchronisation; JOTC:
• enhancing benefits and safety
• decreasing environmental damage
Six flow scenarios (Source: Fanaian, 2013)
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Data sharing & technical cooperation
Zambezi Dam synchronisation; JOTC:
• enhancing benefits and safety
• decreasing environmental damage
Six flow scenarios (Source: Fanaian, 2013)
Electricity produced:
Full development: 30.8 TWh/yr
EF1 scenario: -1.8 TWh/yr ≈ -145 Million US$/yr
Source: Tilmant et al., 2010
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Data sharing & technical cooperation
Rhine
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Benefit sharing
seasea
boundary
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Joint infrastructure development!
boundary
sea
boundary
sea
Benefit sharing
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Joint infrastructure development!
boundary
sea
boundary
sea
Manantali dam - Senegal river
Kariba dam - Zambezi river
Maguga dam - Incomati river
Khatse dam - Orange river
Benefit sharing
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Joint infrastructure development!
boundary
sea
boundary
sea
Manantali dam - Senegal river
Maguga dam - Incomati river
Khatse dam - Orange river
Kariba dam - Zambezi river
Benefit sharing
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1. Benefit sharing
Joint infrastructure development!
boundary
sea
boundary
sea
3. Towards “water rationality”
Manantali dam - Senegal river
Maguga dam - Incomati river
Khatse dam - Orange river
Kariba dam - Zambezi river
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Joint infrastructure development!
boundary
sea
boundary
sea
Manantali dam - Senegal river
Maguga dam - Incomati river
Khatse dam - Orange river
Kariba dam - Zambezi river
1. Technically complex and data intensive
2. Pre-supposes a consensus over basic water entitlements
3. Should encompass all costs and all benefits across the entire
basin
4. Requires effective institutions to re-distribute the benefits fairly
Benefit sharing
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Blue Nile basin
Benefit sharing
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Trade liberalization on the Eastern Nile
Source: Tewodros Kahsay, IVM-VU/UNESCO-IHE
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Source: Goor et al., 2010
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• More water for Egypt through reduced evaporation losses (+1.5 x 109 m3/a)
• Increased hydropower in Ethiopia (+1650 %)
• Increased irrigation in Sudan (+5.5 %)
• Less hydropower from Aswan for Egypt (-9%)
• Total basin-wide benefits: ~ 2 x 109 US$/a • Excludes the sediment dimension
Source: Goor et al., 2010
Blue Nile basin
Benefit sharing
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Photo: Hermen Smit
Blue Nile basin
Benefit sharing
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Define system boundaries
After watershed, problemshed,
Now precipitationshed, benefitshed
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Source: Van der Ent, Savenije, Schaefli and Steel-Dunne, 2010
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part of rainfall that stems from terrestrial
evaporation
part of evaporation that returns as rainfall on land
Source: Van der Ent, Savenije, Schaefli and Steel-Dunne, 2010
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Southern African Power Pool (SAPP)
Source: www.sapp.co.zw
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“benefitshed”
Issue linking
Meuse
Scheldt
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Information and benefits
1. Precise and quantifiable information is generally undervalued and thus unavailable
2. Benefits of cooperation apparently compares with a baseline/default/BAU scenario – but do we have precise data on the baseline?
3. How to include all benefits and all costs across the entire (biophysical and social) system
4. How to value intangibles such as trust, sovereignty, political gain, social welfare, poverty alleviation, equality?
5. The special role of cooperation between neighbouring states/provinces – where opting out is not an option
6. May we simply add up the benefits and costs?
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Thank you