Confederacion Hidrografica del Jucar CHJ

Valencia, Spain

Confederacion Hidrografica del Jucar CHJ

Valencia, Spain

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Pedro-Monzonis M.,Polytechnic University of Valencia | Solera A.,Polytechnic University of Valencia | Ferrer J.,Confederacion Hidrografica del Jucar CHJ | Estrela T.,Confederacion Hidrografica del Jucar CHJ | Paredes-Arquiola J.,Polytechnic University of Valencia
Journal of Hydrology | Year: 2015

Water represents an essential element for the life of all who inhabit our planet. But the random nature of this resource, which is manifested by the alternation of wet periods and dry periods, makes it even more precious. Whatever the approach (water planning, water management, drought, economy), in order to maximise the profit produced by the allocation of water it is necessary an understanding of the relationships between physical variables as precipitation, temperatures, streamflows, reservoir volumes, piezometric levels, water demands and infrastructures management. This paper attends to provide a review of fundamental water scarcity and drought indexes that enables to assess the status of a water exploitation system. With the aim of a better water management and governance under water scarcity conditions., this paper also presents a classification of indexes to help decision makers and stakeholders to select the most appropriate indexes, taking as the starting point the objectives of the analysis and the river basin features. © 2015 Elsevier B.V.


Pedro-Monzonis M.,Polytechnic University of Valencia | Solera A.,Polytechnic University of Valencia | Ferrer J.,Confederacion Hidrografica del Jucar CHJ | Andreu J.,Polytechnic University of Valencia | Estrela T.,Confederacion Hidrografica del Jucar CHJ
Science of the Total Environment | Year: 2016

Water planning and the Integrated Water Resources Management (IWRM) represent the best way to help decision makers to identify and choose the most adequate alternatives among other possible ones. The System of Environmental-Economic Accounting for Water (SEEA-W) is displayed as a tool for the building of water balances in a river basin, providing a standard approach to achieve comparability of the results between different territories. The target of this paper is to present the building up of a tool that enables the combined use of hydrological models and water resources models to fill in the SEEA-W tables. At every step of the modelling chain, we are capable to build the asset accounts and the physical water supply and use tables according to SEEA-W approach along with an estimation of the water services costs. The case study is the Jucar River Basin District (RBD), located in the eastern part of the Iberian Peninsula in Spain which as in other many Mediterranean basins is currently water-stressed. To guide this work we have used PATRICAL model in combination with AQUATOOL Decision Support System (DSS). The results indicate that for the average year the total use of water in the district amounts to 15,143 hm3/year, being the Total Water Renewable Water Resources 3909 hm3/year. On the other hand, the water service costs in Jucar RBD amounts to 1634 million € per year at constant 2012 prices. It is noteworthy that 9% of these costs correspond to non-conventional resources, such as desalinated water, reused water and water transferred from other regions. © 2016 Elsevier B.V.


Pedro-Monzonis M.,Polytechnic University of Valencia | Ferrer J.,Confederacion Hidrografica del Jucar CHJ | Solera A.,Polytechnic University of Valencia | Estrela T.,Confederacion Hidrografica del Jucar CHJ | Paredes-Arquiola J.,Polytechnic University of Valencia
Procedia Engineering | Year: 2014

Currently, water accounts are one of the next steps to be implemented in European River Basin Management Plans. One of the major handicaps lies on computing water resources availability as it depends on several factors, some of which are difficult to quantify. Building water accounts is a complex task, mainly due to the lack of common European definitions and procedures for calculating water availability. For their development, when data is not systematically measured, simulation models and estimations are necessary. The main idea of this paper is to obtain a general scheme to quantify water availability in a river basin and apply it in the European context of water planning. The Jucar River Basin, located in the eastern part of the Iberian Peninsula in Spain, has been taken as a study case. Overall, as the European Union consists of countries with different hydrology, emulating the hydrological cycle may not always be enough. Consequently, a possible procedure would be to incorporate all the elements necessary for determining water accounts within the hydrological models, or within water resources management models, or an intermediate solution. © 2014 Published by Elsevier Ltd.


Perez-Martin M.A.,Polytechnic University of Valencia | Estrela T.,Confederacion Hidrografica del Jucar CHJ | Marin M.A.,Ministry of Environment and Rural and Marine Affairs | Del-Amo P.,Polytechnic University of Valencia
iEMSs 2012 - Managing Resources of a Limited Planet: Proceedings of the 6th Biennial Meeting of the International Environmental Modelling and Software Society | Year: 2012

Nitrate pollution in groundwater (GW) is a major problem in European Union that also affects a large number of GW bodies in Spain. The Spanish Ministry of Environment, and Rural and Marine Affairs has defined environmental objectives for each GW bodies of Spain in relation to pollution by nitrates, for water planning horizons, 2015, 2021, 2027. These objectives have been made available to the Spanish River Basin Authorities (RBAs) to support the elaboration of River Basin Management Plans established by the European Water Framework Directive (EC, 2000). The definition of nitrate concentration objectives in the groundwater bodies has been performed by means of the construction of a distributed hydrological model with water quality for all Spanish territory, using the Patrical model. The effect of three fertilizer application scenarios on nitrate concentrations has been assessed with this simulation model: 1) baseline scenario that corresponds to maintain the current fertilization; 2) optimal scenario, which is the application of the nitrogen optimal dose that requires a strong economic investment through the application of techniques such as fertigation; 3) trend reversal and improvement scenario that is an intermediate stage between the two previous ones, which includes the development of the action plans defined in current vulnerable areas and it is the more plausible scenario in the short to medium term. The results obtained and provided to RBAs are: The GW bodies that will reach the objective in the year 2015, when nitrate concentration is lower than 50 mgNO3/l in that year and also do not have a growing trend; the GW bodies that require extended deadline until 2021 or 2027; and the GW bodies that need to establish less stringent objectives, due to that is not possible to obtain a nitrate concentration lower than 50 mgNO3/l in 2027, even with the implementation of fertilizer optimal doses.


Custodio E.,España University | Andreu-Rodes J.M.,University of Alicante | Aragon R.,Instituto Geologico Y Minero Of Espana Igme | Estrela T.,Confederacion Hidrografica del Jucar CHJ | And 7 more authors.
Science of the Total Environment | Year: 2016

Intensive groundwater development is a common circumstance in semiarid and arid areas. Often abstraction exceeds recharge, thus continuously depleting reserves. There is groundwater mining when the recovery of aquifer reserves needs more than 50 years. The MASE project has been carried out to compile what is known about Spain and specifically about the south-eastern Iberian Peninsula and the Canary Islands. The objective was the synthetic analysis of available data on the hydrological, economic, managerial, social, and ethical aspects of groundwater mining. Since the mid-20th century, intensive use of groundwater in south-eastern Spain allowed extending and securing the areas with traditional surface water irrigation of cash crops and their extension to former dry lands, taking advantage of good soils and climate. This fostered a huge economic and social development. Intensive agriculture is a main activity, although tourism plays currently an increasing economic role in the coasts. Many aquifers are relatively high yielding small carbonate units where the total groundwater level drawdown may currently exceed 300 m. Groundwater storage depletion is estimated about 15 km3. This volume is close to the total contribution of the Tagus-Segura water transfer, but without large investments paid for with public funds. Seawater desalination complements urban supply and part of cash crop cultivation. Reclaimed urban waste water is used for irrigation. Groundwater mining produces benefits but associated to sometimes serious economic, administrative, legal and environmental problems. The use of an exhaustible vital resource raises ethical concerns. It cannot continue under the current legal conditions. A progressive change of water use paradigm is the way out, but this is not in the mind of most water managers and politicians. The positive and negative results observed in south-eastern Spain may help to analyse other areas under similar hydrogeological conditions in a less advanced stage of water use evolution. © 2016 Elsevier B.V.


Pedro-Monzonis M.,Polytechnic University of Valencia | Ferrer J.,Confederacion Hidrografica del Jucar CHJ | Solera A.,Polytechnic University of Valencia | Estrela T.,Confederacion Hidrografica del Jucar CHJ | Paredes-Arquiola J.,Polytechnic University of Valencia
Science of the Total Environment | Year: 2015

One of the major difficulties in water planning is to determine the water availability in a water resource system in order to distribute water sustainably. In this paper, we analyze the key issues for determining the exploitable water resources as an indicator of water availability in a Mediterranean river basin. Historically, these territories are characterized by heavily regulated water resources and the extensive use of unconventional resources (desalination and wastewater reuse); hence, emulating the hydrological cycle is not enough. This analysis considers the Jucar River Basin as a case study. We have analyzed the different possible combinations between the streamflow time series, the length of the simulation period and the reliability criteria. As expected, the results show a wide dispersion, proving the great influence of the reliability criteria used for the quantification and localization of the exploitable water resources in the system. Therefore, it is considered risky to provide a single value to represent the water availability in the Jucar water resource system. In this sense, it is necessary that policymakers and stakeholders make a decision about the methodology used to determine the exploitable water resources in a river basin. © 2014 Elsevier B.V.

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