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| Titel |
A dynamic water accounting framework based on marginal resource opportunity cost |
| VerfasserIn |
A. Tilmant, G. Marques, Y. Mohamed |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 19, no. 3 ; Nr. 19, no. 3 (2015-03-23), S.1457-1467 |
| Datensatznummer |
250120664
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| Publikation (Nr.) |
 copernicus.org/hess-19-1457-2015.pdf |
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| Zusammenfassung |
| Many river basins throughout the world are increasingly under pressure as
water demands keep rising due to population growth, industrialization,
urbanization and rising living standards. In the past, the typical answer to
meet those demands focused on the supply side and involved the construction
of hydraulic infrastructures to capture more water from surface water bodies
and from aquifers. As river basins have become more and more developed,
downstream water users and ecosystems have become increasingly dependent on
the management actions taken by upstream users. The increased
interconnectedness between water users, aquatic ecosystems and the built
environment is further compounded by climate change and its impact on the
water cycle. Those pressures mean that it has become increasingly important
to measure and account for changes in water fluxes and their corresponding
economic value as they progress throughout the river system. Such basin water
accounting should provide policy makers with important information regarding
the relative contribution of each water user, infrastructure and management
decision to the overall economic value of the river basin. This paper
presents a dynamic water accounting approach whereby the entire river basin
is considered as a value chain with multiple services including production
and storage. Water users and reservoir operators are considered as economic
agents who can exchange water with their hydraulic neighbors at a price
corresponding to the marginal value of water. Effective water accounting is
made possible by keeping track of all water fluxes and their corresponding
hypothetical transactions using the results of a hydro-economic model. The
proposed approach is illustrated with the Eastern Nile River basin in Africa. |
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