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Accueil du site → Doctorat → Espagne → 2013 → Gestión conjunta de recursos hídricos a escala local. Aplicación del modelo Simges al caso de Hellín (Albacete)

Universidad de Murcia (2013)

Gestión conjunta de recursos hídricos a escala local. Aplicación del modelo Simges al caso de Hellín (Albacete)

Pérez Sánchez, Julio

Titre : Gestión conjunta de recursos hídricos a escala local. Aplicación del modelo Simges al caso de Hellín (Albacete)

Auteur : Pérez Sánchez, Julio

Université de soutenance : Universidad de Murcia.

Grade : Tesis doctoral 2013

Résumé partiel
In the 90´s, Spain has reached what is known as water maturity, that is to say, that its total water demand has exceeded half of its resources. Opposite to these pressures on the water resources and before a growth of the agrarian demand concerning 33% in the next 40 years, the exposition of a modification becomes necessary in the independence of the use of water resources taken up until now. Due to the relationships between underground and superficial water, as well as of the logical demand of considering the joint and/or alternating use of both, water must be considered as a unique resource. The advantages of the joint use of the superficial and underground resources consist of reaching guarantees of supply near to 100 %, with a relatively low cost. Obtaining these guarantees only with surface resources would have a high cost and not profitable most of the times. The use of aquifers, as reservoirs of regulation, can focus, in addition to natural regulation (balance between natural recharge and extractions), as artificial one, in which the water earnings increase deliberately to the aquifer, by means of artificial recharges. This system allows "to regulate" waters that are not necessarily coming from the aquifer, and that would not have another opportunity to be useful. The artificial recharge uses the capacity of reservoir of the aquifer, refilling its empty spaces due to a natural process or the extractions. To verify these considerations Hellín has been selected because almost the total of its surface settles on masses of groundwater (95,94 %), a fact that highlights the great importance of aquifers and its resources associated with the development and the economic activity of the area. According to this, different available alternatives there have been evaluated, related to the joint use of resources, as well as the contributions and associate demands, the geographical location and the possibilities of interrelation between superficial resources and underground "reservoirs". In addition, irrigations supplied by resources from the river Mundo through the Hellín channel, are the ones which have major importance in the municipality (38 %), followed by the ones that use groundwater resources that represents 34,51 % of the whole of the surface. Both units include more than 70 % of the surface of irrigation of Hellín, what gives an idea of the possible benefits of the integration and regulation of the both resources. This channel crosses the Boquerón aquifer in its south limit near Hellín, what makes possible the use of this aquifer as a regulatory reservoir of the local system, receiving the surpluses of the superficial resources of the channel and contributing part of the demanded volumes, taking part in the regulation of the local water resources management. METHODOLOGY As soon as the possibilities of the system have been taken into account, the different alternatives have been analyzed (current independent management and joint management) by means of the application of SIMGES. This model, developed by the University of Valencia, allows the aquifer to be incorporated in the surface water resources subsystem as one more regulation reservoir, which stores water during periods of surpluses and gives it, when deficit exists.

Mots Clés : recursos en agua aguas territoriales embalses

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Page publiée le 27 novembre 2014, mise à jour le 30 janvier 2019