SENSITIVITY ANALYSIS AND RELATIVE IMPORTANCE ASSESSMENT OF THE MAIN FACTORS ON PEAK DISCHARGE IN CURVE NUMBER-SCS METHOD

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MALEKINEZHAD H.; KOUSARI M.R.

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Paper Information

Journal: IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING Year:2009 | Volume:2 | Issue:5 Page(s): 31-40

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Title

SENSITIVITY ANALYSIS AND RELATIVE IMPORTANCE ASSESSMENT OF THE MAIN FACTORS ON PEAK DISCHARGE IN CURVE NUMBER-SCS METHOD

Author(s)

MALEKINEZHAD H. | KOUSARI M.R. | Issue Writer Certificate

Keywords

CURVE NUMBER METHODQ3

HYDROGRAPHQ2

PEAK DISCHARGEQ2

RETURN PERIODQ1

SCS AND SENSITIVITY ANALYSISQ1

Abstract

The CN-SCS method is one of the most common methods in runoff and PEAK DISCHARGE estimation. Sensitivity analysis and relative importance assessment of five parameters, CN, time of concentration, rainfall in different RETURN PERIODs, watershed area and α were studied in this research. The CN-SCS approach has not completely processed by sensitivity analysis. For finding the nature of curve number SCS method in estimating PEAK DISCHARGE and its reaction to change in input parameters, the effects of 5 parameters including CN, time of concentration (TC), watershed area (A), rainfall amount in different RETURN PERIODs (P) and finally, α coefficient (the coefficient for obtaining the time of effective rainfall and it is usually equal to 0.133) were surveyed on PEAK DISCHARGE. Results indicate the effective role of CN on PEAK DISCHARGE as the most important output of model. The sensitivity of the model in estimation of PEAK DISCHARGE highly increases in large RETURN PERIODs. The sensitivity analysis of curve number SCS method was performed in MATLAB programming environment.

Cites

EVALUATION OF THE MOST IMPORTANT FACTORS EFFECTING MAXIMUM FLOOD DISCHARGE USING SENSITIVITY ANALYSIS OF EMPIRICAL FORMULAE

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APA: Copy

MALEKINEZHAD, H., & KOUSARI, M.R.. (2009). SENSITIVITY ANALYSIS AND RELATIVE IMPORTANCE ASSESSMENT OF THE MAIN FACTORS ON PEAK DISCHARGE IN CURVE NUMBER-SCS METHOD. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, 2(5), 31-40. SID. https://sid.ir/paper/134642/en

Vancouver: Copy

MALEKINEZHAD H., KOUSARI M.R.. SENSITIVITY ANALYSIS AND RELATIVE IMPORTANCE ASSESSMENT OF THE MAIN FACTORS ON PEAK DISCHARGE IN CURVE NUMBER-SCS METHOD. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING[Internet]. 2009;2(5):31-40. Available from: https://sid.ir/paper/134642/en

IEEE: Copy

H. MALEKINEZHAD, and M.R. KOUSARI, “SENSITIVITY ANALYSIS AND RELATIVE IMPORTANCE ASSESSMENT OF THE MAIN FACTORS ON PEAK DISCHARGE IN CURVE NUMBER-SCS METHOD,” IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, vol. 2, no. 5, pp. 31–40, 2009, [Online]. Available: https://sid.ir/paper/134642/en

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