Water Resources Management

, Volume 17, Issue 6, pp 463–480 | Cite as

Water Release Policy Effects on the Shortage Characteristics for the Shihmen Reservoir System during Droughts

  • J. T. Shiau


Drought-induced shortages are inevitable because of unexpected abnormal dry weather and the increasing need for water resources. Therefore, assessment of possible shortage conditions for a specific water supply system is an essential component in water resources planning and management. In this study, the shortage characteristics for the Shihmen Reservoir in Taiwan are investigated. A description of the reservoir yield in terms of the shortage frequency, magnitude, and duration is developed first. The derived reservoir yield description under a given operating policy and demand includes the reliability, total shortage rate, frequency, single period shortage, event shortage duration and magnitude, and interarrival time of shortage events. Hedging is a common measure adopted in reservoir operation that involves accepting a small current deficit to reduce future severe shortages. The reservoir supply index is then developed to trigger hedging in this study. The shortage characteristics for different lead-time hedging rules show that the derived reservoir supply index is a useful indicator for triggering hedging and the differences among reservoir performance for various release policies are easily compared using the derived reservoir yield description in terms of probabilistic shortage characteristics.

hedging rule reservoir supply index reservoir yield shortage indicator 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Bayazit, M. and Unal, N. E.: 1990, ‘Effects of hedging on reservoir performance’, Water Resour. Res. 26(4), 713–719.Google Scholar
  2. Cancelliere, A., Ancarani, A. and Rossi, G.: 1998, ‘Susceptibility of water supply reservoir to drought conditions’, J. Hydrologic Engng., ASCE, 3(2), 140–148.Google Scholar
  3. Hashimoto, H., Stedinger, J. R. and Loucks, D. P.: 1982, ‘Reliability, resiliency, and vulnerability criteria for water resources system performance evaluation’, Water Resour. Res. 18(1), 14–20.Google Scholar
  4. Hrezo, M. S., Bridgeman, P. G. and Walker, W. R.: 1986, ‘Managing drought through triggering mechanisms’, J. Am. Water Works. Assoc. 78(6), 46–51.Google Scholar
  5. Kung, C. S. and Liao, Y. C.: 2002, ‘Establishment of drought monitoring system for Shihemen Rreservoir’, J. Water Resour. Managt. 4(3), 27–33 (in Chinese).Google Scholar
  6. Lee, T. M. and Su, J. M.: 2002, ‘Water rationing measures of Shihmen Reservoir in 2002 drought’, J. Water Resour. Managt. 4(3), 16–26 (in Chinese).Google Scholar
  7. Linsley, R. T., Franzini, J. B., Freyberg, D. L. and Tchobanoglous, G.: 1992, Water-Resources Engineerning, 4th Ed., McGraw Hill Inc., New York, U.S.A.Google Scholar
  8. Lund, J. R. and Reed, R. U.: 1995, ‘Drought water rationing and transferable rations’, J. Water Resour. Plant. Managt., ASCE 121(6), 429–437.Google Scholar
  9. Maass, A., Hufschmidt, M. M., Dorfman, R., Thomas Jr., H. A., Marglin, S. A. and Fair, G. M.: 1962, Design of Water Resources System, Harvard University Press, Cambridge, Mass., U.S.A.Google Scholar
  10. Neelakantan, T. R. and Pundarikanthan, N. V.: 1999, ‘Hedging rule optimization for water supply reservoir system’, Water Resour. Managt. 13(6), 409–426.Google Scholar
  11. Salas, J. D., Delleur, J. W., Yevjevich, V. and Lane, W. L.: 1988, Applied Modeling of Hydrologic Time Series, Water Resources Publications, Fort Collins, Colo., U.S.A.Google Scholar
  12. Shiau, J. T. and Shen, H.W.: 2001, ‘Recurrence analysis of hydrologic droughts of differing severity’, J. Water Resour. Plant. Managt., ASCE 127(1), 30–40.Google Scholar
  13. Shih, J. S. and ReVelle, C.: 1995, ‘Water supply operations during drought: a discrete hedging rule’, European J. Operat. Res. 82, 163–175.Google Scholar
  14. Shih, J. S. and ReVelle, C.: 1994, ‘Water-supply operations during drought: continuous hedging rule’, J. Water Resour. Plant. Managt., ASCE 120(5), 613–629.Google Scholar
  15. Srinivasan, K. and Philipose, M. C.: 1996, ‘Evaluation and selection of hedging policies using stochastic reservoir simulation’, Water Resour. Managt. 10(3), 163–188.Google Scholar
  16. Srinivasan, K. and Philipose, M. C.: 1998, ‘Effect of hedging on over-year reservoir performance’, Water Resour. Managt. 12(2), 95–120.Google Scholar
  17. Tickle, K. and Goulter, I. C.: 1992, ‘Assessment of Performance Metrics for a Reservoir under Stochastic Conditions’, in Proceedings of the 6th IAHR International Symposium on Stochastic Hydraulics, Taipei, pp. 583–590.Google Scholar
  18. Water Resources Agency (WRA): 2002, Planning Decision Support System for Drought Defense, Water Resources Agency, Taiwan (in Chinese).Google Scholar
  19. Wilhite, D. A.: 1993, The Enigma of Drought, in D. A. Wilhite (ed.), Drought Assessment, Management and Planning: Theory and Case Studies, Kluwer Academic Publishers, pp. 3–15.Google Scholar
  20. Xu, Z., Jinno, K., Kawamura, A., Takesaki, S. and Ito, K.: 1998, Performance risk analysis for Fukuoka water supply system, Water Resour. Managt. 12(1), 13–30.Google Scholar
  21. Yevjevich, V.: 1967, ‘An Objective Approach to Definitions and Investigations of Continental Hydrologic Droughts’, Hydrology Paper No.23, Colorado State Univ., Fort Collins, Colo., U.S.A.Google Scholar

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • J. T. Shiau
    • 1
  1. 1.Department of Water Resources and Environmental EngineeringTamkang UniversityTamsuiTaiwan, R.O.C.

Personalised recommendations