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Estimation of the Velocity Parameter of the Geomorphologic Instantaneous Unit Hydrograph

Author

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  • A. Al-Wagdany
  • A. Rao

Abstract

The problem of estimation of the velocity parameter in the exponential distribution geomorphological instantaneous unit hydrograph (ED-GIUH) is investigated in this study. The main difficulty in applying the ED-GIUH model is the estimation of this parameter. In the present study, the ED-GIUH model is applied to six watersheds in Indiana, U.S.A. The relationships between the velocity parameter and climatic as well as basin geomorphologic parameters are investigated. The results of the study indicate that the velocity parameter is related to effective rainfall depth, total basin area and cumulative slope; it does not depend on runoff characteristics. Therefore, the ED-GIUH model can be used for estimating discharge hydrographs from ungauged watersheds. Copyright Kluwer Academic Publishers 1997

Suggested Citation

  • A. Al-Wagdany & A. Rao, 1997. "Estimation of the Velocity Parameter of the Geomorphologic Instantaneous Unit Hydrograph," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 11(1), pages 1-16, February.
    • Handle: RePEc:spr:waterr:v:11:y:1997:i:1:p:1-16
    DOI: 10.1023/A:1007923906214
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    Cited by:

    1. Muhammad Ahmad & Abdul Ghumman & Sajjad Ahmad, 2009. "Estimation of Clark’s Instantaneous Unit Hydrograph Parameters and Development of Direct Surface Runoff Hydrograph," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(12), pages 2417-2435, September.
    2. Muhammad Ahmad & Abdul Ghumman & Sajjad Ahmad & Hashim Hashmi, 2010. "Estimation of a Unique Pair of Nash Model Parameters: An Optimization Approach," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(12), pages 2971-2989, September.
    3. B. Grum & B. A. Abebe & A. M. Degu & H. Goitom & K. Woldearegay & R. Hessel & C. J. Ritsema & V. Geissen, 2023. "Evaluation of the Velocity Parameter Estimation Methods in a Geomorphological Instantaneous Unit Hydrograph (GIUH) Model for Simulating Flood Hydrograph in Ungauged Catchments," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 37(1), pages 157-173, January.

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