Short-Term Reservoir Storage Frequency Relationships
Publication: Journal of Water Resources Planning and Management
Volume 138, Issue 6
Abstract
The water rights analysis package (WRAP) is a generalized river/reservoir system simulation model that is routinely applied in Texas in regional and statewide planning studies and administration of the water right permit system. The WRAP modeling system was recently expanded by adding short-term storage frequency and supply reliability analysis capabilities. Individual reservoirs and multiple-reservoir systems can be analyzed considering numerous water users and complex water management practices. The new modeling features are based on dividing the hydrologic period-of-analysis into many short-simulation sequences with each starting with the same storage conditions. Two alternative frequency/reliability analysis methodologies, called the equal-weight and probability-array options, are compared in this paper with a case-study application. The probability array option is designed to improve the accuracy of storage frequency estimates by modeling hydrologic persistence as reflected in the preceding reservoir storage contents on the basis of a regression of natural streamflow versus preceding storage from a long-term simulation.
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Acknowledgments
This paper is based on research conducted at Texas A&M University sponsored by the Texas Commission on Environmental Quality, Brazos River Authority, and Texas Water Resources Institute. Funding support and guidance provided by these agencies is gratefully acknowledged. However, the contents of this paper do not necessarily reflect the views or endorsement of these research sponsors.
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Information
Published In
Journal of Water Resources Planning and Management
Volume 138 • Issue 6 • November 2012
Pages: 597 - 605
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Feb 15, 2011
Accepted: Nov 30, 2011
Published online: Dec 2, 2011
Published in print: Nov 1, 2012
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