caa a22 4500 463194748 CHVBK 20180406164919.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10669-007-9010-2 doi (NATIONALLICENCE)springer-10.1007/s10669-007-9010-2 Using system dynamics to model water-reallocation [Elektronische Daten] [Amgad Elmahdi, Hector Malano, Teri Etchells] Improving the efficiency of water allocation has long been recognised as a key problem for the water resources management decision-makers. However, assessing the efficacy of management decision is difficult due to the complexity and interconnectivity of water resource systems. For this reason, it is vital that robust modelling approaches are employed to deal with the feedback loops inherent in the water resource systems. Whilst many studies have applied modelling to various aspects of water resource management, little attention has been given to innovations in modelling approaches to deal with the modelling challenges associated with improving decision-making. The aim of this study is to apply a System Dynamics modelling approach to improve the efficiency of water allocation incorporating a myriad of irrigation system constraints. The system dynamic approach allows the different system components to be organised as a collection of discrete objects that incorporate data, structure and function to generate complex system behaviour. Through the application of a system dynamic approach, a robust model (named the Economical Reallocating Water Model (ERWM)) was developed which was used to examine the options of re-allocating water resources that minimize the water cost all over an irrigated agricultural area. The EWRM incorporated a wide range of complexities likely to be encountered in water resource management: surface and ground water sources, water trading between sources, system constraint such as maximum ground water pumping, rates, maximum possible trading volumes and differential water resource prices. Two hypothetical systems have been presented here as an example. The results show that the System Dynamics approach has a significant advantages in estimating and assessing the outcomes of alternative water management strategies through time and space. Springer Science+Business Media, LLC, 2007 Economic water use nationallicence Optimization nationallicence System dynamics nationallicence Water allocation nationallicence Water trading and price nationallicence Elmahdi Amgad CSIRO, land and water, PMB 2 Glen Osmond, SA 5062, Adelaide, Australia aut Malano Hector Department of Civil and Environment Engineering, The University of Melbourne, 3010, Vic, Australia aut Etchells Teri Department of Civil and Environment Engineering, The University of Melbourne, 3010, Vic, Australia aut The Environmentalist Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 27/1(2007-03-01), 3-12 0251-1088 27:1<3 2007 27 10669 https://doi.org/10.1007/s10669-007-9010-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10669-007-9010-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Elmahdi Amgad CSIRO, land and water, PMB 2 Glen Osmond, SA 5062, Adelaide, Australia aut NATIONALLICENCE 700 1- Malano Hector Department of Civil and Environment Engineering, The University of Melbourne, 3010, Vic, Australia aut NATIONALLICENCE 700 1- Etchells Teri Department of Civil and Environment Engineering, The University of Melbourne, 3010, Vic, Australia aut NATIONALLICENCE 773 0- The Environmentalist Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 27/1(2007-03-01), 3-12 0251-1088 27:1<3 2007 27 10669 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer