Optimal Real-Time Operation of Multipurpose Urban Reservoirs: Case Study in Singapore
Publication: Journal of Water Resources Planning and Management
Volume 140, Issue 4
Abstract
The sustainable urban water management paradigm is based on the idea that water supply, storm water drainage, and wastewater disposal are interrelated resources that can increase the sustainability at the urban scale. In this context, the construction of reservoirs mainly fed by storm water and operated for drinking supply purposes can be demonstrated to achieve long-term sustainability objectives. However, the operational management of reservoirs located in urban areas faces a number of challenges due to the high hydraulic efficiency of urban catchments, i.e., short time of concentration, increased runoff rates, and losses of infiltration and baseflow. With the purpose of discussing the best alternatives to deal with these extreme hydrological features, this article analyzes the performance of offline and online operation, based on stochastic dynamic programming and deterministic model predictive control. Moreover, a quantitative assessment of the role of the hydro-meteorological information available in real time is provided. The case study considered is Marina Reservoir, a multipurpose reservoir located in the heart of Singapore. It is characterized by a large, highly urbanized catchment that produces significant discharges with a short time of concentration of approximately 1 h. Results show that the online approach, by anticipating the inflow events, outperforms the offline one and provides a better compromise between floods control, pumps usage, and drinking water supply objectives.
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Acknowledgments
The research presented in this work was carried out as part of the Singapore-Delft Water Alliance (SDWA) Multi-Objective Multiple-Reservoir Management research programme (R-303-001-005-272). The authors are grateful to Hans Eikaas (Public Utilities Board of Singapore) and Daniel Twigt (Deltares, The Netherlands) for their technical support.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 140 • Issue 4 • April 2014
Pages: 511 - 523
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Apr 10, 2012
Accepted: Dec 27, 2012
Published online: Dec 29, 2012
Discussion open until: May 29, 2013
Published in print: Apr 1, 2014
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