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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 16, issue 3 | Copyright
Hydrol. Earth Syst. Sci., 16, 801-814, 2012
https://doi.org/10.5194/hess-16-801-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 12 Mar 2012

Research article | 12 Mar 2012

Prioritization of water management under climate change and urbanization using multi-criteria decision making methods

J.-S. Yang1, E.-S. Chung2, S.-U. Kim3, and T.-W. Kim4 J.-S. Yang et al.
  • 1School of Civil and Environmental Engineering, Kookmin University, 136-702 Seoul, Republic of Korea
  • 2School of Civil Engineering, Seoul National University of Science and Technology, Gongneung-Ro 232, Nowon-gu, 139-743 Seoul, Republic of Korea
  • 3Department of Civil Engineering, Kangwon National University, 200-701 Kangwon, Republic of Korea
  • 4Water Resources Department, Websolus Co., 152-848 Seoul, Republic of Korea

Abstract. This paper quantifies the transformed effectiveness of alternatives for watershed management caused by climate change and urbanization and prioritizes five options using multi-criteria decision making techniques. The climate change scenarios (A1B and A2) were obtained by using a statistical downscaling model (SDSM), and the urbanization scenario by surveying the existing urban planning. The flow and biochemical oxygen demand (BOD) concentration duration curves were derived, and the numbers of days required to satisfy the environmental flow requirement and the target BOD concentration were counted using the Hydrological Simulation Program-Fortran (HSPF) model. In addition, five feasible alternatives were prioritized by using multi-criteria decision making techniques, based on the driving force-pressure-state-impact-response (DPSIR) framework and cost component. Finally, a sensitivity analysis approach for MCDM methods was conducted to reduce the uncertainty of weights. The result indicates that the most sensitive decision criterion is cost, followed by criteria response, driving force, impact, state and pressure in that order. As it is certain that the importance of cost component is over 0.127, construction of a small wastewater treatment plant will be the most preferred alternative in this application.

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