Multi-reservoir management with Open-MI

C. Makropoulos, E. Safiolea, A. Efstratiadis, E. Oikonomidou, V. Kaffes, C. Papathanasiou, and M. Mimikou, Multi-reservoir management with Open-MI, Proceedings of the 11th International Conference on Environmental Science and Technology, Chania, A, 788–795, Department of Environmental Studies, University of the Aegean, 2009.



The paper applies advanced integrated modeling techniques supported by the Open Modeling Interface (OpenMI) standard to optimize water resources allocation for a rapidly growing rural area in Greece. Water uses in a rural basin are significantly affected by urban growth, changes in agricultural practices and industrial needs. This results in a complex water system, whose optimal configuration requires the combination of structural and non-structural approaches. Furthermore, the reliable operation of the water system may be placed under significant stress due to increasing trends of extreme events associated with potential climatic changes which affect freshwater availability. To evaluate and improve the system’s operation, a series of specialized models need to be linked and exchange data at runtime. The approach presented in this paper, used OpenMI (an open source, royalty free standard) to facilitate the direct, timestep-by-timestep, communication of models from different providers, written in different coding languages, with different spatial and temporal resolutions. The models were “migrated” to OpenMI and were run simultaneously, linked (exchanging data) at nodes specified by the modeler. The resulting integrated modeling system is tested in the Thessaly Water District, Greece, where growing water demand has often become an issue of conflict between stakeholders. As an example of the type of problems typically faced in the region, a system of two reservoirs receiving flows from different subbassins is designed to satisfy the water demand of the study area. The principal reservoir, the Smokovo reservoir, is a real reservoir, currently in operation, situated on the confluence of two streams, tributaries of the Pinios river. Downstream of Smokovo reservoir, the river flow has to satisfy a series of needs such as ecological flows, increasing irrigation needs, increasing potable water demand of the local municipalities, and production of electricity. The second reservoir introduced in this study is the potential rehabilitation of the Lake Xyniada, as a means to improve the overall resilience of the water system to extreme events and possibly decrease the costs (ecological-economic) of water consumption in the area. The integrated modeling system comprises of three OpenMI-compliant model components: a reservoir model (RMM), a hydraulic model with supporting rainfall-runoff modules (MIKE-11) and a multi-reservoir operational rule component. The models were set-up, calibrated, and linked to exchange data at runtime using data provided by the Public Power Corporation and the Ministry of Environment. The modeling system was run under different operating rules to assess the reliability of the combined reservoir system and compare it with the one-reservoir existing solution against different stakeholder objectives. The paper suggests indicative solutions from the preliminary analysis and concludes with the identification of key future challenges and ideas for further development.

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Our works referenced by this work:

1. D. Koutsoyiannis, A. Efstratiadis, and G. Karavokiros, A decision support tool for the management of multi-reservoir systems, Journal of the American Water Resources Association, 38 (4), 945–958, doi:10.1111/j.1752-1688.2002.tb05536.x, 2002.
2. D. Koutsoyiannis, N. Mamassis, A. Koukouvinos, and A. Efstratiadis, Final report, Investigation of management scenarios for the Smokovo reservoir, Contractor: Department of Water Resources, Hydraulic and Maritime Engineering – National Technical University of Athens, Report 4, 66 pages, Department of Water Resources and Environmental Engineering – National Technical University of Athens, Athens, July 2008.

Other works that reference this work (this list might be obsolete):

1. Fotopoulos, F., C. Makropoulos C., and M.A Mimikou, Flood forecasting in transboundary catchments using the Open Modeling Interface, Environmental Modelling and Software, 25(12), 1640-1649, 2010.
2. #Moe, S. J., L. J. Barkved, M. Blind, C.. Makropoulos, M. Vurro, S. Ekstrand, J. Rocha, M. Mimikou, and M. J. Ulstein, How can climate change be incorporated in river basin management plans under the WFD? Report from the EurAqua Conference 2008, 27 p., Norwegian Institute for Water Research, 2010.

Tagged under: Students' works presented in conferences