The Water Footprint as an indicator of environmental sustainability in water use at the river basin level.

One of the main challenges in water management is to determine how the current water use can condition its availability to future generations and hence its sustainability. This study proposes the use of the Water Footprint (WF) indicator to assess the environmental sustainability in water resources management at the river basin level. The current study presents the methodology developed and applies it to a case study. The WF is a relatively new indicator that measures the total volume of freshwater that is used as a production factor. Its application is ever growing in the evaluation of water use in production processes. The calculation of the WF involves water resources (blue), precipitation stored in the soil (green) and pollution (grey). It provides a comprehensive assessment of the environmental sustainability of water use in a river basin. The methodology is based upon the simulation of the anthropised water cycle, which is conducted by combining a hydrological model and a decision support system. The methodology allows the assessment of the environmental sustainability of water management at different levels, and/or ex-ante analysis of how the decisions made in water planning process affect sustainability. The sustainability study was carried out in the Segura River Basin (SRB) in South-eastern Spain. The SRB is among the most complex basins in Europe, given its special peculiarities: competition for the use, overexploitation of aquifers, pollution, alternative sources, among others. The results indicate that blue water use is not sustainable due to the generalised overexploitation of aquifers. They also reveal that surface water pollution, which is not sustainable, is mainly caused by phosphate concentrations. The assessment of future scenarios reveals that these problems will worsen if no additional measures are implemented, and therefore the water management in the SRB is environmentally unsustainable in both the short- and medium-term.

[1]  Francisco Pellicer-Martínez,et al.  A probabilistic approach for the socioeconomic assessment of urban river rehabilitation projects , 2014 .

[2]  Enrique Lapuente,et al.  Full cost in desalination. A case study of the Segura River Basin , 2012 .

[3]  A. Hoekstra,et al.  Inter- and intra-annual variation of water footprint of crops and blue water scarcity in the Yellow River basin (1961-2009) , 2016 .

[4]  J. K. Summers,et al.  Relating ecoystem services to domains of human well-being: Foundation for a U.S. index , 2013 .

[5]  Ángel Perni,et al.  Assessment of the Programme of Measures for Coastal Lagoon Environmental Restoration Using Cost–Benefit Analysis , 2013 .

[6]  A. Sahuquillo,et al.  Groundwater intensive use and mining in south-eastern peninsular Spain: Hydrogeological, economic and social aspects. , 2016, The Science of the total environment.

[7]  Y. Katpatal,et al.  Impact of over-exploitation on groundwater quality: A case study from WR-2 Watershed, India , 2014, Journal of Earth System Science.

[8]  M. Papadopoulou,et al.  How evapotranspiration process may affect the estimation of water footprint indicator in agriculture , 2015 .

[9]  Daniel P. Loucks,et al.  A computationally efficient open-source water resource system simulator - Application to London and the Thames Basin , 2011, Environ. Model. Softw..

[10]  Ángel Perni,et al.  A participatory approach for selecting cost-effective measures in the WFD context: the Mar Menor (SE Spain). , 2013, The Science of the total environment.

[11]  Xuemei Ding,et al.  Careful considerations when reporting and evaluating the grey water footprint of products , 2014 .

[12]  R. Briggs,et al.  Analysis of anthropogenic pressures in the Segura Watershed (SE Spain), with a focus on inter‐basin transfer , 2012 .

[13]  L. García-Barrón,et al.  Temporal analysis (1940–2010) of rainfall aggressiveness in the Iberian Peninsula basins , 2015 .

[14]  Francisco Pellicer-Martínez,et al.  Grey water footprint assessment at the river basin level: Accounting method and case study in the Segura River Basin, Spain , 2016 .

[15]  Frederick D. Gordon.  Water Scarcity in the Twenty First Century , 2004 .

[16]  Xiaomeng Yu.  Water Scarcity: Fact or Fiction? , 2016 .

[17]  John Clayton,et al.  Performance evaluation of a water resources system under varying climatic conditions: Reliability, Resilience, Vulnerability and beyond , 2014 .

[18]  Tineke E. Lambooy,et al.  Corporate social responsibility: sustainable water use , 2011 .

[19]  Arjen Ysbert Hoekstra,et al.  Assessing water footprint at river basin level: a case study for the Heihe River Basin in northwest China , 2012 .

[20]  Peter H. Gleick,et al.  Comprehensive Assessment of the Freshwater Resources of the World , 1997 .

[21]  B. Martín‐López,et al.  Exploring the Capacity of Water Framework Directive Indices to Assess Ecosystem Services in Fluvial and Riparian Systems: Towards a Second Implementation Phase , 2016, Environmental Management.

[22]  Chia-Ching Chou,et al.  Risk-based drought early warning system in reservoir operation , 2008 .

[23]  The River Segura: reclaimed water, recovered river , 2014 .

[24]  M. Kaika.  The Water Framework Directive: A New Directive for a Changing Social, Political and Economic European Framework , 2003 .

[25]  Juan Diego Giraldo-Osorio,et al.  Assessing Nonstationary Spatial Patterns of Extreme Droughts from Long-Term High-Resolution Observational Dataset on a Semiarid Basin (Spain) , 2015 .

[26]  Carlo Ingrao,et al.  Application of water footprint to olive growing systems in the Apulia region: a comparative assessment , 2016 .

[27]  M. Zamorano,et al.  Implementation of the European Water Framework Directive: Integration of hydrological and regional planning at the Segura River Basin, southeast Spain , 2011 .

[28]  D. Lovarelli,et al.  Water Footprint of crop productions: A review. , 2016, The Science of the total environment.

[29]  M. Aldaya,et al.  Incorporating the Water Footprint and Virtual Water into Policy: Reflections from the Mancha Occidental Region, Spain , 2010 .

[30]  Marco Trevisan,et al.  A new approach to assessing the water footprint of wine: an Italian case study. , 2014, The Science of the total environment.

[31]  George F. McMahon.  Sustainability Criteria for Water Resource Systems , 1999 .

[32]  Daniel P. Loucks,et al.  Sustainability Index for Water Resources Planning and Management , 2011 .

[33]  Peter H. Gleick,et al.  Water Footprint Outcomes and Policy Relevance Change with Scale Considered: Evidence from California , 2014, Water Resources Management.

[34]  G. Schmidt,et al.  Interbasin Water Transfers in Spain: Interregional Conflicts and Governance Responses , 2014 .

[35]  Francisco Pellicer-Martínez,et al.  Assessment of interbasin groundwater flows between catchments using a semi-distributed water balance model , 2014 .

[36]  Tasks and functions of a decision support system for water resources management in the Lower Volga , 2013, Water Resources.

[37]  Carlos Montes,et al.  Understanding complex links between fluvial ecosystems and social indicators in Spain: An ecosystem services approach , 2014 .

[38]  Arjen Ysbert Hoekstra,et al.  The water footprint of the EU for different diets , 2013 .

[39]  Other.  Directive 2000/60/EC of the European Parliament and of The Council of 23 October 2000 establishing a Framework for Community Action in the Field of Water Policy (Water Framework Directive) , 2000 .

[40]  Using gray water footprint to verify economic sectors' consumption of assimilative capacity in a river basin: model and a case study in the Haihe River Basin, China , 2015 .

[41]  Arjen Ysbert Hoekstra,et al.  The Water Footprint Assessment Manual , 2011 .

[42]  Abel Solera,et al.  A review of water scarcity and drought indexes in water resources planning and management , 2015 .

[43]  Á. Borja,et al.  The European Water Framework Directive at the age of 10: a critical review of the achievements with recommendations for the future. , 2010, The Science of the total environment.

[44]  A. Pérez‐Morales,et al.  Housing bubbles and the increase of flood exposure. Failures in flood risk management on the Spanish south‐eastern coast (1975–2013) , 2018 .

[45]  Osama M. Sallam.  Water footprints as an indicator for the equitable utilization of shared water resources: (Case study: Egypt and Ethiopia shared water resources in Nile Basin) , 2014 .

[46]  Klaus Hubacek,et al.  A hydro-economic MRIO analysis of the Haihe River Basin's water footprint and water stress , 2015 .

[47]  José M. Martínez-Paz,et al.  Analysis of incorporating groundwater exchanges in hydrological models , 2015 .

[48]  Leona K. Svancara,et al.  Policy-driven versus Evidence-based Conservation: A Review of Political Targets and Biological Needs , 2005 .

[49]  Enrique Ortega,et al.  Water reuse in Spain: Data overview and costs estimation of suitable treatment trains , 2010 .

[50]  Frank R. Rijsberman,et al.  Water scarcity: Fact or fiction? , 2006 .

[51]  Yong Geng,et al.  Regional water footprint evaluation in China: a case of Liaoning. , 2013, The Science of the total environment.

[52]  Pablo Jiménez-Gavilán,et al.  The use of AQUATOOL DSS applied to the System of Environmental-Economic Accounting for Water (SEEAW) , 2016 .

[53]  A. Hoekstra.  A critique on the water-scarcity weighted water footprint in LCA , 2016 .

[54]  Arjen Ysbert Hoekstra,et al.  Sustainability of the water footprint of the Spanish pork industry , 2015 .