Modelo para la previsión de riesgos en la gestión de cuencas a medio plazo: SIMRISK

Presentación realizada para el Taller de trabajo sobre "Uso de predicciones climáticas estacionales para la mejora de la gestión de los embalses" celebrado en la sede central de AEMET el día 6 de octubre de 2015. Este Taller de trabajo ha sido organizado conjuntamente por la Dirección General del Agua, el proyecto del 7º Programa Marco de la Unión Europea EUPORIAS, y AEMET

Variations in the Patterns of Precipitation in the Watershed of the Ambato River Associated with the Eruptive Process of the Tungurahua Volcano in Ecuador

The Tungurahua, located in the Cordillera de los Andes, is the volcano with the most eruptive activity in Ecuador nowadays. 1993 records the eruptive initial process and in August of 1999, after almost 80 years of rest, the volcano begins an explosive eruptive period. This research examines the effects of the eruptive process of the volcano in the patterns of change in precipitation in the short term in a hydrographic watershed. Their results are intended to contribute to the studies carried out to understand the weather and the factors influencing its variability at local and global level. It aims also to contribute with technical data in the debate about experimenting with artificial volcanoes to weather modification. The analysis demonstrates a process of redistribution of rainfall, with significant increases in rainfall from 42.25% on December, and significant decreases of 40.03% on September, during the presence of the eruptive process.Rios-Garcia, I.; Solera Solera, A. (2015). Variations in the Patterns of Precipitation in the Watershed of the Ambato River Associated with the Eruptive Process of the Tungurahua Volcano in Ecuador. Open Journal of Modern Hydrology. 5(4):121-139. doi:10.4236/ojmh.2015.54011S1211395

Probabilistic Forecasting of Drought Events Using Markov Chain- and Bayesian Network-Based Models A Case Study of an Andean Regulated River Basin

[EN] The scarcity of water resources in mountain areas can distort normal water application patterns with among other effects, a negative impact on water supply and river ecosystems. Knowing the probability of droughts might help to optimize a priori the planning and management of the water resources in general and of the Andean watersheds in particular. This study compares Markov chain- (MC) and Bayesian network- (BN) based models in drought forecasting using a recently developed drought index with respect to their capability to characterize different drought severity states. The copula functions were used to solve the BNs and the ranked probability skill score (RPSS) to evaluate the performance of the models. Monthly rainfall and streamflow data of the Chulco River basin, located in Southern Ecuador, were used to assess the performance of both approaches. Global evaluation results revealed that the MC-based models predict better wet and dry periods, and BN-based models generate slightly more accurately forecasts of the most severe droughts. However, evaluation of monthly results reveals that, for each month of the hydrological year, either the MC- or BN-based model provides better forecasts. The presented approach could be of assistance to water managers to ensure that timely decision-making on drought response is undertakenAvilés-Añazco, A.; Celleri, R.; Solera Solera, A.; Paredes Arquiola, J. (2016). Probabilistic Forecasting of Drought Events Using Markov Chain- and Bayesian Network-Based Models A Case Study of an Andean Regulated River Basin. Water. 8(2). doi:10.3390/w8020037S8

Analysing hydropower production in stressed river basins within the SEEA-W approach: the Jucar River case

[EN] Hydropower generation represents an important contribution to meeting the challenges of today's increasing world energy needs. It uses about 44% of water in Europe, and it is the main user of water in most OECD countries. However, in most cases, the energy sector is not a water consumer. The largest part of these withdrawals is immediately returned into the environment, being able to be used by other sectors, which is its most prominent characteristic. In order to understand the water-energy nexus and the challenges that the environment and other water users face, the European Commission proposed the use of water accounts in order to measure the influence of each water user, infrastructure and management decision to the total economic value of water resources in a given basin. In this sense, the SEEA-W is the most well-known approach of hybrid accounting as it provides a standard approach to compare results between different regions. This research analyses hydropower production in the Jucar River Basin (Spain), which is currently water-stressed by consumptive demands, within the SEEA-W approach. The results demonstrate that the SEEA-W approach needs some improvement in order to represent hydropower production properly.We would also like to express our gratitude to the Jucar River Basin Authority - Confederacion Hidrografica del Jucar (Spanish Ministry of Agriculture, Food and Environment) for providing data to develop this study. The authors wish to thank the Spanish Ministry of Economy and Competitiveness for its financial support through the NUTEGES project (CGL2012-34978) and ERAS project (CTM2016-77804-P). We also value the support provided by the European Community's Seventh Framework Program in financing the projects ENHANCE (FP7-ENV-2012, 308438), AGUAMOD (Interreg V-B Sudoe 2016), SWICCA (ECMRWF-Copernicus-FA 2015/C3S_441-LOT1/SMHI) and IMPREX (H2020-WATER-2014-2015, 641811).Solera Solera, A.; Pedro Monzonis, M.; Andreu Álvarez, J.; Estrela Monreal, T. (2018). Analysing hydropower production in stressed river basins within the SEEA-W approach: the Jucar River case. Hydrology Research. 49(2):528-538. https://doi.org/10.2166/nh.2017.278S528538492Andreu, J., Capilla, J., & Sanchís, E. (1996). AQUATOOL, a generalized decision-support system for water-resources planning and operational management. Journal of Hydrology, 177(3-4), 269-291. doi:10.1016/0022-1694(95)02963-xDimova, G., Tzanov, E., Ninov, P., Ribarova, I., & Kossida, M. (2014). Complementary Use of the WEAP Model to Underpin the Development of SEEAW Physical Water Use and Supply Tables. Procedia Engineering, 70, 563-572. doi:10.1016/j.proeng.2014.02.062Dincer, I. (2000). Renewable energy and sustainable development: a crucial review. Renewable and Sustainable Energy Reviews, 4(2), 157-175. doi:10.1016/s1364-0321(99)00011-8Estrela, T., Pérez-Martin, M. A., & Vargas, E. (2012). Impacts of climate change on water resources in Spain. Hydrological Sciences Journal, 57(6), 1154-1167. doi:10.1080/02626667.2012.702213Lehner, B., Czisch, G., & Vassolo, S. (2005). The impact of global change on the hydropower potential of Europe: a model-based analysis. Energy Policy, 33(7), 839-855. doi:10.1016/j.enpol.2003.10.018Molden, D., & Sakthivadivel, R. (1999). Water Accounting to Assess Use and Productivity of Water. International Journal of Water Resources Development, 15(1-2), 55-71. doi:10.1080/07900629948934Monteiro, C., Ramirez-Rosado, I. J., & Fernandez-Jimenez, L. A. (2014). Short-term forecasting model for aggregated regional hydropower generation. Energy Conversion and Management, 88, 231-238. doi:10.1016/j.enconman.2014.08.017Pedro-Monzonís, M., Jiménez-Fernández, P., Solera, A., & Jiménez-Gavilán, P. (2016). The use of AQUATOOL DSS applied to the System of Environmental-Economic Accounting for Water (SEEAW). Journal of Hydrology, 533, 1-14. doi:10.1016/j.jhydrol.2015.11.034Pedro-Monzonís, M., Solera, A., Ferrer, J., Andreu, J., & Estrela, T. (2016). Water accounting for stressed river basins based on water resources management models. Science of The Total Environment, 565, 181-190. doi:10.1016/j.scitotenv.2016.04.161Pellicer-Martínez, F., & Martínez-Paz, J. M. (2016). Grey water footprint assessment at the river basin level: Accounting method and case study in the Segura River Basin, Spain. Ecological Indicators, 60, 1173-1183. doi:10.1016/j.ecolind.2015.08.032Pereira-Cardenal, S. J., Madsen, H., Arnbjerg-Nielsen, K., Riegels, N., Jensen, R., Mo, B., … Bauer-Gottwein, P. (2014). Assessing climate change impacts on the Iberian power system using a coupled water-power model. Climatic Change, 126(3-4), 351-364. doi:10.1007/s10584-014-1221-1Pérez-Martín, M. A., Estrela, T., Andreu, J., & Ferrer, J. (2014). Modeling Water Resources and River-Aquifer Interaction in the Júcar River Basin, Spain. Water Resources Management, 28(12), 4337-4358. doi:10.1007/s11269-014-0755-3Scherer, L., & Pfister, S. (2016). Global water footprint assessment of hydropower. Renewable Energy, 99, 711-720. doi:10.1016/j.renene.2016.07.02

Comparing performance indicators to characterize the water supply to the demands of the Guadiana River basin (Spain)

Añadir el siguiente texto en el campo descripción: "This is an Accepted Manuscript of an article published in Hydrological Sciences Journal on 31-Mar-2020, available online: http://www.tandfonline.com/10.1080/02626667.2020.1734812."[EN] Water indicators and indices are useful tools to assess river basin performance, that is, to measure whether the basin operates satisfactorily under a wide range of possible future demands and hydrological conditions. Spanish regulations assess the performance of water demands by using reliability indicators (RIs), established by law in 2008. This article raises the possibility of updating RIs by comparing them with sustainability indicators (SIs). SIs are widely used for the assessment of river basin performance and several policy scenarios. We applied a water allocation model to the Guadiana River basin in Spain to compare indicators under three scenarios. The study was framed within the science of socio-hydrology, combining the physical environment of a water system with its influence on social aspects. SIs gave better results than RIs when comparing future scenarios. We also propose the introduction of a vulnerability indicator into Spanish regulations.The authors thank the Spanish Research Agency (MINECO) for the financial support to the ERAS project [CTM2016-77804-P], including EU-FEDER funds. Additionally, we value the support provided by the European Community in financing the project IMPREX [H2020-WATER-2014-2015, 641811].Palop-Donat, C.; Paredes Arquiola, J.; Solera Solera, A.; Andreu Álvarez, J. (2020). Comparing performance indicators to characterize the water supply to the demands of the Guadiana River basin (Spain). Hydrological Sciences Journal. 1-15. https://doi.org/10.1080/02626667.2020.1734812S115Aguilera, H., Castaño, S., Moreno, L., Jiménez-Hernández, M. E., & de la Losa, A. (2013). Model of hydrological behaviour of the anthropized semiarid wetland of Las Tablas de Daimiel National Park (Spain) based on surface water–groundwater interactions. Hydrogeology Journal, 21(3), 623-641. doi:10.1007/s10040-012-0950-3Alarcón, J., Garrido, A., & Juana, L. (2016). Modernization of irrigation systems in Spain: review and analysis for decision making. International Journal of Water Resources Development, 32(3), 442-458. doi:10.1080/07900627.2015.1123142Andreu, J., Capilla, J., & Sanchís, E. (1996). AQUATOOL, a generalized decision-support system for water-resources planning and operational management. Journal of Hydrology, 177(3-4), 269-291. doi:10.1016/0022-1694(95)02963-xAshofteh, P.-S., Rajaee, T., & Golfam, P. (2017). Assessment of Water Resources Development Projects under Conditions of Climate Change Using Efficiency Indexes (EIs). Water Resources Management, 31(12), 3723-3744. doi:10.1007/s11269-017-1701-yBOE (Boletín Oficial del Estado), 2008. ORDEN ARM/2656/2008, de 10 de septiembre, por la que se aprueba la instrucción de planificación hidrológica. BOE. 229 de 22 de septiembre 2008, 38472–38582. https://www.boe.es/buscar/doc.php?id=BOE-A-2008-15340.BOE (Boletín Oficial del Estado), 2010. Protocolo de Revision del Convenio Sobre Cooperación Para La Protección y el Aprovechamiento Sostenible de Las Aguas de las Cuencas Hidrográficas Hispano-Portuguesas y el Protocolo adicional. Albufeira, Portugal, 30 de Noviembre de 1998. BOE. 14, de 16 de enero de 2010, 3425–3432CEDEX (Centro de Estudios y Experimentación de Obras Públicas), 2011. Evaluación del Impacto del Cambio Climático en los recursos hídricos en régimen natural. Encomienda de gestión de la Dirección General del Agua (MARM) para el estudio del cambio climático en los recursos hídricos y las masas de agua. Madrid, Spain: Centro de Publicaciones, Secretaría General Técnica del Ministerio de Fomento.Collet, L., Ruelland, D., Estupina, V. B., Dezetter, A., & Servat, E. (2015). Water supply sustainability and adaptation strategies under anthropogenic and climatic changes of a meso-scale Mediterranean catchment. Science of The Total Environment, 536, 589-602. doi:10.1016/j.scitotenv.2015.07.093Official Journal of the European Communities. (1984). Analytical Proceedings, 21(6), 196. doi:10.1039/ap9842100196Estrada Lorenzo, F., 1993. La garantía en los sistemas de explotación de recursos hidráulicos. Thesis (PhD). Universidad Politécnica de Madrid.García-Santos, G., de Brito, M. M., Höllermann, B., Taft, L., Almoradie, A., & Evers, M. (2018). Methodology to explore emergent behaviours of the interactions between water resources and ecosystem under a pluralistic approach. Proceedings of the International Association of Hydrological Sciences, 379, 83-87. doi:10.5194/piahs-379-83-2018Gheisi, A., Forsyth, M., & Naser, G. (2016). Water Distribution Systems Reliability: A Review of Research Literature. Journal of Water Resources Planning and Management, 142(11), 04016047. doi:10.1061/(asce)wr.1943-5452.0000690Gohari, A., Mirchi, A., & Madani, K. (2017). System Dynamics Evaluation of Climate Change Adaptation Strategies for Water Resources Management in Central Iran. Water Resources Management, 31(5), 1413-1434. doi:10.1007/s11269-017-1575-zGoharian, E., Burian, S. J., & Karamouz, M. (2018). Using Joint Probability Distribution of Reliability and Vulnerability to Develop a Water System Performance Index. Journal of Water Resources Planning and Management, 144(2), 04017081. doi:10.1061/(asce)wr.1943-5452.0000869Hashimoto, T., Stedinger, J. R., & Loucks, D. P. (1982). Reliability, resiliency, and vulnerability criteria for water resource system performance evaluation. Water Resources Research, 18(1), 14-20. doi:10.1029/wr018i001p00014Hernández-Bedolla, J., Solera, A., Paredes-Arquiola, J., Pedro-Monzonís, M., Andreu, J., & Sánchez-Quispe, S. (2017). The Assessment of Sustainability Indexes and Climate Change Impacts on Integrated Water Resource Management. Water, 9(3), 213. doi:10.3390/w9030213(2018). Water and Environment Journal, 32(1). doi:10.1111/wej.2018.32.issue-1Lall, U., & Miller, C. W. (1988). An optimization model for screening multipurpose reservoir systems. Water Resources Research, 24(7), 953-968. doi:10.1029/wr024i007p00953LOUCKS, D. P. (1997). Quantifying trends in system sustainability. Hydrological Sciences Journal, 42(4), 513-530. doi:10.1080/02626669709492051Loucks, D. P., & van Beek, E. (2017). Water Resource Systems Planning and Management. doi:10.1007/978-3-319-44234-1Milano, M., Reynard, E., Köplin, N., & Weingartner, R. (2015). Climatic and anthropogenic changes in Western Switzerland: Impacts on water stress. Science of The Total Environment, 536, 12-24. doi:10.1016/j.scitotenv.2015.07.049Ortega-Gómez, T., Pérez-Martín, M. A., & Estrela, T. (2018). Improvement of the drought indicators system in the Júcar River Basin, Spain. Science of The Total Environment, 610-611, 276-290. doi:10.1016/j.scitotenv.2017.07.250Pedro Monzonís, M., 2014. Análisis de metodologías de balances hídricos en sistemas complejos en el contexto europeo de la Planificación hidrológica. Aplicación a la cuenca del Júcar. Thesis (MS). Universitat Politècnica de València.Pedro-Monzonís, M., 2016. Assessment of water exploitation indexes based on water accounting. Thesis (PhD). Universitat Politècnica de València.Pedro-Monzonís, M., Solera, A., Ferrer, J., Estrela, T., & Paredes-Arquiola, J. (2015). A review of water scarcity and drought indexes in water resources planning and management. Journal of Hydrology, 527, 482-493. doi:10.1016/j.jhydrol.2015.05.003Ruiz Pulpón, Á. R. (2006). Regadíos y gestión sostenible de los recursos hídricos en la cuenca del Guadiana: propuesta territorial previa a la toma de decisiones. 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Hydrology and Earth System Sciences, 22(3), 1665-1693. doi:10.5194/hess-22-1665-2018Sivapalan, M., Konar, M., Srinivasan, V., Chhatre, A., Wutich, A., Scott, C. A., … Rodríguez‐Iturbe, I. (2014). Socio‐hydrology: Use‐inspired water sustainability science for the Anthropocene. Earth’s Future, 2(4), 225-230. doi:10.1002/2013ef000164Sivapalan, M., Savenije, H. H. G., & Blöschl, G. (2012). Socio-hydrology: A new science of people and water. Hydrological Processes, 26(8), 1270-1276. doi:10.1002/hyp.8426Srdjevic, Z., & Srdjevic, B. (2017). An Extension of the Sustainability Index Definition in Water Resources Planning and Management. Water Resources Management, 31(5), 1695-1712. doi:10.1007/s11269-017-1609-6Troy, T. J., Pavao-Zuckerman, M., & Evans, T. P. (2015). Debates-Perspectives on socio-hydrology: Socio-hydrologic modeling: Tradeoffs, hypothesis testing, and validation. Water Resources Research, 51(6), 4806-4814. doi:10.1002/2015wr017046Xu, L., Gober, P., Wheater, H. S., & Kajikawa, Y. (2018). Reframing socio-hydrological research to include a social science perspective. Journal of Hydrology, 563, 76-83. doi:10.1016/j.jhydrol.2018.05.061Yustres, Á., Navarro, V., Asensio, L., Candel, M., & García, B. (2013). Groundwater resources in the Upper Guadiana Basin (Spain): a regional modelling analysis. Hydrogeology Journal, 21(5), 1129-1146. doi:10.1007/s10040-013-0987-

Contribution of decision support systems to water management improvement in basins with high evaporation in Mediterranean climates

[EN] The entry into force of Directive 2000/60/EC of the European Parliament and the Council of 23 October 2000 established a new model for the management and protection of surface water and groundwater in Europe. In this sense, a thorough knowledge of the basins is an essential step in achieving this European objective. The utility of integrative decision support systems (DSS) for decision-making in complex systems and multiple objectives allows decision-makers to identify characteristics and improve water management in a basin. In this research, hydrological and water management resource models have been combined, with the assistance of the DSS AQUATOOL, with the aim of deepening the consideration of losses by evaporation of reservoirs for a better design of the basin management rules. The case study treated is an Andalusian basin of the Atlantic zone (Spain). At the same time, different management strategies are analysed based on the optimization of the available resources by means of the conjunctive use of surface water and groundwater.The study was performed with the support of the Ecological Transition Ministry, through the Biodiversity Foundation.Ruíz-Ortíz, V.; García-López, S.; Solera Solera, A.; Paredes Arquiola, J. (2019). Contribution of decision support systems to water management improvement in basins with high evaporation in Mediterranean climates. Hydrology Research. 50(4):1020-1036. https://doi.org/10.2166/nh.2019.014S10201036504Alcamo J. , HenrichT. & RoschT.2000World Water in 2025 – Global Modelling and Scenario Analysis for the World Commission on Water for the 21st Century. Report A0002, Centre for Environmental System Research, University of Kassel, Germany.ALCAMO, J., FLÖRKE, M., & MÄRKER, M. (2007). Future long-term changes in global water resources driven by socio-economic and climatic changes. Hydrological Sciences Journal, 52(2), 247-275. doi:10.1623/hysj.52.2.247Allen R. G. , PereiraL. S., RaesD. & SmithM.2006Crop Evapotranspiration. Guidelines for Computing Crop Water Requirements (FAO Irrigation and Drainage Paper 56). Food and Agricultural Organization of the United Nations, Rome, Italy. http://www.fao.org/docrep/009/x0490s/x0490s00.htm (accessed 10 September 2018).Andreu, J., Capilla, J., & Sanchís, E. (1996). AQUATOOL, a generalized decision-support system for water-resources planning and operational management. Journal of Hydrology, 177(3-4), 269-291. doi:10.1016/0022-1694(95)02963-xAndreu J. , SoleraA., CapillaJ. & FerrerJ.2007Modelo SIMGES de simulación de la gestión de recursos hídricos, incluyendo utilización conjunta. Versión 3.03.01. Manual de usuario (Model SIMGES simulation of water resources management, including conjunctive use. 3.03.01 version. User Manual). Polytechnic University of Valencia, Valencia, Spain.Condon, L. E., & Maxwell, R. M. (2013). 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Water Quantity and Quality Models Applied to the Jucar River Basin, Spain

“The final publication is available at Springer via http://dx.doi.org/ 10.1007/s11269-010-9578-z ”.Traditionally, water quality modelling has focused on modelling individual water bodies. However, water quality management problems must be analyzed at the basin scale. European Water Framework Directive (WFD) requires introducing physical, chemical and biological aspects into the management of water resources systems. Water quality modelling at a basin scale presents the advantage of incorporating in a dynamic way the relationships between the different elements and water bodies. Currently, there are few tools to deal with water modelling of water quality and management at the basin scale. This paper presents the development of a water quantity model and a water quality model for a very complex water resources system: the JA(0)car River Basin (Spain). The basin is characterized by a high degree of use of the water and by many water problems related to point and diffuse pollution, on top of a complex water quantity management of the basin. To deal with this problem, SIMGES (water allocation) and GESCAL (water quality) basin scale models have been used. Both are part of the Decision Support System AQUATOOL, one of the main instruments used in Spain in order to analyze water quantity and quality aspects of water resources systems for the compliance with WFD, as shown for the case of study.This study was supported by funds from Jucar River Basin Agency (Spanish Ministry of Environment), from the Spanish Ministry of Education and Culture (project "Desarrollo de elementos de un sistema soporte de decision para la gestion de recursos hidricos", HID1999-0656), and from the European Union (project "SEDEMED-Secheresse et Desertification dans les bassins mediterranees", ref. 2002-024.4-1084).Paredes Arquiola, J.; Andreu Álvarez, J.; Martín Monerris, M.; Solera Solera, A. (2010). Water Quantity and Quality Models Applied to the Jucar River Basin, Spain. 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Herramienta de ayuda a la toma de decisiones en la gestión de los embalses utilizando predicciones estacionales, basada en el modelo SIMRISK de previsión de riesgos en la gestión de cuencas a medio plazo

Presentación realizada para el Taller de trabajo sobre "Uso de predicciones climáticas estacionales para la mejora de la gestión de los embalses" celebrado en AEMET el día 10 de noviembre de 2016. El evento ha sido organizado de forma conjunta por la Dirección General del Agua, AEMET y CETaqua, dentro de las actividades del proyecto del 7º Programa Marco de la Unión Europea EUPORIAS. El taller ha tenido como finalidad presentar y practicar con las herramientas desarrolladas en el caso de estudio de aplicación de predicciones climáticas estacionales para la gestión de los embalses

Risk assessment in water resources planning under climate change at the Júcar River basin

[EN] Climate change and its possible effects on water resources has become an increasingly near threat. Therefore, the study of these impacts in highly regulated systems and those suffering extreme events is essential to deal with them effectively. This study responds to the need for an effective method to integrate climate change projections into water planning and management analysis in order to guide the decision-making, taking into account drought risk assessments. Therefore, this document presents a general and adaptive methodology based on a modeling chain and correction processes, whose main outcomes are the impacts on future natural inflows, a drought risk indicator, and the simulation of future water storage in the water resources system (WRS). This method was applied in the Jucar River basin (JRB) due to its complexity and the multiannual drought events it suffers recurrently. The results showed a worrying decrease in future inflows, as well as a high probability (approximate to 80%) of being under 50% of total capacity of the WRS in the near future. However, the uncertainty of the results was considerable from the mid-century onwards, indicating that the skill of climate projections needs to be improved in order to obtain more reliable results. Consequently, this paper also highlights the difficulties of developing this type of method, taking partial decisions to adapt them as far as possible to the basin in an attempt to obtain clearer conclusions on climate change impact assessments. Despite the high uncertainty, the results of the JRB call for action and the tool developed can be considered as a feasible and robust method to facilitate and support decision-making in complex basins for future water planning and management.This research has been supported by IMproving PRedictions and management of hydrological EXtremes (IMPREX) (grant no. 641811), Service for Water Indicators in Climate Change Adaptation (SWICCA) (grant no. ECMRWF-CopernicusFA 2015/C3S_441-LOT1/SMHI), Estimacion del Riesgo Ambiental frente a las Sequias y el cambio climatico (ERAS) (grant no. CTM2016-77804-P), and Time scale reduction on water resources and environmental planning (RESPHIRA) (grant no. PID2019-106322RB-100).Suárez-Almiñana, S.; Solera Solera, A.; Madrigal, J.; Andreu Álvarez, J.; Paredes Arquiola, J. (2020). Risk assessment in water resources planning under climate change at the Júcar River basin. 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Improving Indicators of Hydrological Alteration in Regulated and Complex Water Resources Systems: A Case Study in the Duero River Basin

[EN] Assessing the health of hydrological systems is vital for the conservation of river ecosystems. The indicators of hydrologic alteration are among the most widely used parameters. They have been traditionally assessed at the scale of river reaches. However, the use of such indicators at the basin scale is relevant for water resource management since there is an urgent need to meet environmental objectives to mitigate the effects of present and future climatic conditions. This work proposes a methodology to estimate the indicators of hydrological alteration at the basin scale in regulated systems based on simulations with a water allocation model. The methodology is illustrated through a case study in the Iberian Peninsula (the Duero River basin), where different minimum flow scenarios were defined, assessing their effects on both the hydrological alteration and the demand guarantees. The results indicate that it is possible to improve the hydrological status of some subsystems of the basin without affecting the water demand supplies. Thus, the methodology presented in this work will help decision makers to optimize water management while improving the hydrological status of the river basins.This research was funded by the Spanish Research Agency (AEI), grant number PID2019-106322RB-100; AEI/10.13039/501100011033. R.J.B. was partly funded by the Spanish Ministry of Science and Innovation through the research contract IJC2019-038848-I.Pardo-Loaiza, J.; Solera Solera, A.; Bergillos, RJ.; Paredes Arquiola, J.; Andreu Álvarez, J. (2021). Improving Indicators of Hydrological Alteration in Regulated and Complex Water Resources Systems: A Case Study in the Duero River Basin. Water. 13(19):1-18. https://doi.org/10.3390/w13192676118131