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Communication Dans Un Congrès Année : 2015

What part of natural flow can be considered a 'water resource'?

Vazken Andréassian
Jean Margat
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Guillaume Thirel

Résumé

In this paper, we discuss an unfortunate semantic shortcut the use of the expression 'water resources' as a synonym for 'river/groundwater flow' which causes great confusion in all Water Security-related discussions. We show that only a part of the flow can be considered a resource, and that the efficiency of the flow-to-resource conversion is a complex function of: (i) the hydrologic regime, (ii) environmental constraints (in-stream reserved flows), (iii) the type of water demand, and (iv) the existence of artificial reservoirs. Last, we illustrate how the flow-to-resource conversion can be affected by future climatic changes. Hydrologic data and climate change simulations for three French rivers (the rivers Vilaine, Durance and Garonne) are ukd to illustrate this discussion.
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Dates et versions

hal-04608712 , version 1 (11-06-2024)

Identifiants

  • HAL Id : hal-04608712 , version 1

Citer

Vazken Andréassian, Jean Margat, Guillaume Thirel, Pierre Hubert. What part of natural flow can be considered a 'water resource'?. 11th Kovacs Colloquium on Hydrological Sciences and Water Security: Past, Present and Future, Jun 2014, Paris, France. pp.IAHS Publication. ⟨hal-04608712⟩
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