Modeling Controlled Water Systems
Publication: Journal of Irrigation and Drainage Engineering
Volume 136, Issue 6
Abstract
The particular challenges of modeling controlled water systems are discussed. The high degree of freedom due to the control structures increases the risk of producing the right output for the wrong reasons. On the other hand, many controlled water systems are (partly) manually operated or at least supervised by an operational water manager. The decisions of these managers are not as rigid as a computer simulated control strategy. Therefore, getting a very close fit with a water-system control model is mostly not possible. A modeling framework is proposed that takes advantage of the vast availability of measurement data in controlled water systems. The water level and flow data at control structures allow for intensive validation and subsystem calibration to reduce the degree of modeling freedom and to model separately the natural rainfall-runoff and hydrodynamic processes. The framework is successfully applied to improve a simulation model of the controlled water system of Rijnland, The Netherlands. The yearly volume error was reduced from 11% to less than 1% and as a consequence, the short-term peak events were modeled more accurately as well. The resulting water-system control model is more reliable for both design studies and operational decision support. The framework will contribute to prepare more reliable simulation models of controlled water systems.
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Acknowledgments
The data for this research were kindly provided by the Royal Netherlands Meteorological Institute and the Rijnland water board. The research was partially funded by the Delft Cluster program.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 136 • Issue 6 • June 2010
Pages: 392 - 404
Copyright
© 2010 ASCE.
History
Received: Feb 5, 2009
Accepted: Aug 17, 2009
Published online: May 14, 2010
Published in print: Jun 2010
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