Combining hydro-economic and water quality modeling for optimal management of a degraded watershed

Author:

Alamanos Angelos12,Latinopoulos Dionysios3,Xenarios Stefanos4,Tziatzios Georgios1,Mylopoulos Nikitas1,Loukas Athanasios5

Affiliation:

1. Laboratory of Hydrology and Aquatic Systems Analysis, Department of Civil Engineering, University of Thessaly, Pedion Areos, Volos, 38334, Greece

2. The Water Institute, University of Waterloo, 200 University Avenue W, Waterloo, ON N2 L 3G1, Canada

3. School of Spatial Planning and Development, Faculty of Engineering, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece

4. Graduate School of Public Policy, Nazarbayev University, Astana, 010000, Republic of Kazakhstan and Environment & Resource Efficiency Cluster, Nazarbayev Univesity, Astana, 010000, Republic of Kazakhstan

5. Department of Rural and Surveying Engineering, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece

Abstract

Abstract Increase of economic and productivity efficiencies intensifies environmental pressures, too. Agriculture is one of the most common examples of this phenomenon. The sector is lacking proper management, which is especially prominent in Mediterranean areas. To address the situation, a holistic modeling approach, combining hydrological, economic and water quality aspects, is recommended for implementation in a Greek watershed. The broader area is degraded regarding its water availability, quality, and management. The model provides insights into water balance, net profit from agricultural activities, presents water quality data from simulations, and introduces two useful parameters informing the decision-maker's knowledge and understanding: the deficit irrigation water's value and a hydro-economic index which estimates (socio-)economic benefits over environmental balance. A combined demand-management plan is also examined considering the above outputs in investigating the multiple effects of the suggested policy measures. Furthermore, to discuss the optimal approach depending on data availability and scope, we compare two different settings of the proposed model. The results of the study confirmed the continuous quantitative and qualitative water resources' deterioration and economic overexploitation of the watershed. The study reveals the immediate need for management actions, integrated modeling approaches, and provides future recommendations on hydro-economic modeling.

Publisher

IWA Publishing

Subject

Atmospheric Science,Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering,Water Science and Technology

Reference47 articles.

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