Le partage de la ressource en eau sur la Durance en 2050 : vers une évolution du mode de gestion des grands ouvrages duranciens ?

Sauquet, Éric; Arama, Yannick; Blanc-Coutagne, Eugénie; Bouscasse, Hélène; Branger, Flora; Braud, Isabelle; Brun, Jean‐François; Cherel, Johan; Cipriani, T.; Datry, Thibault; Ducharne, Agnès; Hendrickx, F.; Hingray, B.; Krowicki, Florence; Goff, Isabelle Le; Lay, Matthieu Le; Malerbe, Florence; Mathevet, Thibault; Mezghani, Abdel; Monteil, Céline; Perrin, Charles; Poulhe, P.; Rossi, Alexandra; Samie, René; Strosser, P.; Thirel, Guillaume; Tilmant, François; Vidal, Jean‐Philippe

doi:10.1051/lhb/2016046

Cited by 11 publications

(8 citation statements)

References 15 publications

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“…Le projet Risque, Ressource en eau et gestion Durable de la Durance en 2050, R²D² [21,22] fournit à ce jour l'étude la plus exhaustive possible sur le changement climatique. Il a eu pour objectif principal d'évaluer les impacts des évolutions anthropiques et climatiques sur la gestion de l'eau à l'échelle de la Durance en se focalisant sur l'équilibre offre-demande en eau des territoires sécurisés par les grandes réserves hydrauliques de la Durance et du Verdon, à l'horizon 2050.…”

Section: Focus Sur Le Projet R²d²unclassified

La place de la Société du Canal de Provence dans le partage de l’eau en Provence

et al. 2022

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Le partage de l’eau abordé dans cet article se concentre principalement sur le système Durance-Verdon alimentant directement la concession régionale de la Société du Canal de Provence. Ces rivières constituent également les principales ressources en eau superficielles de la Provence. Le système est composé d’infrastructures hydrauliques importantes : d’abord de stockage sur la Durance amont (Serre-Ponçon) et sur le Verdon amont (Castillon et Sainte-Croix), ensuite de transfert vers le reste de la Région, notamment sur les zones littorales méditerranéennes fortement peuplées. Les grandes retenues en amont du bassin sont en grande partie sous la concession d’EDF, la SCP étant concessionnaire du canal de Provence, dont les ressources en eau sont principalement issues du Verdon. La SCP a la responsabilité de l’acheminement et de la distribution des eaux dans toute la Région PACA jusque dans les Alpes-Maritimes. Dans sa gestion quotidienne de la ressource en eau, la SCP veille à une gestion rationnelle de la ressource et est tournée vers l’économie d’eau afin de se prémunir au mieux du changement climatique et de ses incertitudes.

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Section: Focus Sur Le Projet R²d²unclassified

La place de la Société du Canal de Provence dans le partage de l’eau en Provence

et al. 2022

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“…These are all subject to high flow variations throughout the year. Moreover, the summer low-flow period is expected to become longer and more severe in those tributaries due to climate change, according to the latest estimations (Sauquet et al, 2014). The département of Alpes-de-Haute-Provence contains six of the eight deficit tributaries and parts of the two others.…”

Section: Features Of the Durance River Basin And The Sasse And Jabron Tributariesmentioning

confidence: 99%

Reducing water withdrawals: the negotiation and implementation of environmental policy in the Durance River Basin, France

2020

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Many parts of Europe are facing an increased risk of water scarcity and a potentially disastrous impact on freshwater ecosystems. In line with the Water Framework Directive and the 2006 Water Act, France developed the Sustainable Withdrawals Reform (SWR) in 2008, which aimed to restore a balance between the available water resources and people's needs across the country by 2017. While the literature has generally focused on the economics of e-flow policy instruments, few studies have analysed the politics of their implementation at the local level or how local interests and strategies influence the process. Inspired by the political sociology of policy instruments, and based on in-depth case studies in two catchments of the Durance River Basin (in southeast France), we argue that in order to achieve e-flows in such catchments, the SWR eventually encouraged new capital-intensive water transfers. Beyond their technical aspects, these infrastructure projects engender new hydro-social configurations by modifying irrigation technology and agricultural practices, as well as the spatial control of water. The impact of these projects on the environment remains uncertain. The discussion focuses on the role of key intermediaries and shows how the framing of negotiations leads certain stakeholders and issues to be excluded from the implementation process.

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“…An increase in the severity of hydrological droughts, in terms of both duration and intensity found to be related to climate change, has been observed in the Mediterranean basin (Aubé, 2017;Bard et al, 2012;Giuntoli et al, 2015;Marx et al, 2018;Ruiz-Villanueva et al, 2014;Sauquet et al, 2015;Van Vliet et al, 2013;Vidal et al, 2016). The increase in the severity of low-water levels contributes to degrading the water resources in terms of both quantity and quality (Nosrati, 2011;Chiogna et al, 2018), thus impacting ecosystems connected to the river (Folegot et al, 2018).…”

Section: Introductionmentioning

confidence: 98%

Identification of the contributing area to river discharge during low-flow periods

Gillet

Salle²,

Ayral

et al. 2021

Hydrol. Earth Syst. Sci.

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Abstract. The increasing severity of hydrological droughts in the Mediterranean basin related to climate change raises the need to understand the processes sustaining low flow. The purpose of this paper is to evaluate simple mixing model approaches, first to identify and then to quantify streamflow contribution during low-water periods. An approach based on the coupling of geochemical data with hydrological data allows the quantification of flow contributions. In addition, monitoring during the low-water period was used to investigate the drying-up trajectory of each geological reservoir individually. Data were collected during the summers of 2018 and 2019 on a Mediterranean river (Gardon de Sainte-Croix). The identification of the end-members was performed after the identification of a groundwater geochemical signature clustered according to the geological nature of the reservoir. Two complementary methods validate further the characterisation: rock-leaching experiments and unsupervised classification (k-means). The use of the end-member mixture analysis (EMMA) coupled with a generalised likelihood uncertainty estimate (GLUE) (G-EMMA) mixing model coupled with hydrological monitoring of the main river discharge rate highlights major disparities in the contribution of the geological units, showing a reservoir with a minor contribution in high flow becoming preponderant during the low-flow period. This finding was revealed to be of the utmost importance for the management of water resources during the dry period.

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Le partage de la ressource en eau sur la Durance en 2050 : vers une évolution du mode de gestion des grands ouvrages duranciens ?

Cited by 11 publications

References 15 publications

La place de la Société du Canal de Provence dans le partage de l’eau en Provence

La place de la Société du Canal de Provence dans le partage de l’eau en Provence

Reducing water withdrawals: the negotiation and implementation of environmental policy in the Durance River Basin, France

Identification of the contributing area to river discharge during low-flow periods

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