ASSESSING THE ROLE OF HYDROLOGICAL STATISTIC DATA PERIOD ON FLOOD FORECASTING IN SEFIDROOD WATERSHED

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JAVANROODI SAMAN; MAHDAVI MOHAMMAD; MOTAMEDVAZIRI BAHARAK

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Journal: WATERSHED ENGINEERING AND MANAGEMENT Year:2017 | Volume:9 | Issue:1 Page(s): 108-115

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Title

ASSESSING THE ROLE OF HYDROLOGICAL STATISTIC DATA PERIOD ON FLOOD FORECASTING IN SEFIDROOD WATERSHED

Author(s)

JAVANROODI SAMAN | MAHDAVI MOHAMMAD | MOTAMEDVAZIRI BAHARAK | Issue Writer Certificate

Keywords

FLOOD’S ESTIMATED ERRORQ1

MAXIMUM DAILY DISCHARGEQ1

RMSE METHODQ1

SMADA SOFTWAREQ1

STATISTICAL DISTRIBUTIONQ1

Abstract

In order to determine the role of hydrological statistic data periods on flood forecasting in Sefidrood Watershed, maximum daily flows were collected from hydrometric stations, thus seventeen valid stations with long-term statistical data period was chosen and in some cases which data were corrupted, data has been reproduced by considering common time base. . At the second step, maximum daily flow data have been divided in to statistic series with 10, 15, 20, 25, 30 and more than 30 years data periods. Fitting statistic distribution of Normal, Normal log, Normal log 2 parameters, Normal log 3 parameters, Pearson log 2, Pearson log 3 and Gamble were determined by “ Smada” software, also flood with two, three, five, 10, 25, 50, 100 and 200 return periods were calculated either. Statistic distribution for all of seventeen hydrometric stations were determined separately with RMSE METHOD in Excel and SPSS for maximum daily flow. . Regarding zero-error in forecasted floods for long statistic data period (more than 30 years) in related return periods, compared with short statistic data period (10, 15, 20, 25 and 30 years), flood’ s estimated error was calculated for all stations. In general, results indicated that increasing of statistic period, will enhance the accuracy of forecasting in hydrometric stations, and applying short-term data period will result in high levels of error.

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APA: Copy

JAVANROODI, SAMAN, MAHDAVI, MOHAMMAD, & MOTAMEDVAZIRI, BAHARAK. (2017). ASSESSING THE ROLE OF HYDROLOGICAL STATISTIC DATA PERIOD ON FLOOD FORECASTING IN SEFIDROOD WATERSHED. WATERSHED ENGINEERING AND MANAGEMENT, 9(1 ), 108-115. SID. https://sid.ir/paper/234805/en

Vancouver: Copy

JAVANROODI SAMAN, MAHDAVI MOHAMMAD, MOTAMEDVAZIRI BAHARAK. ASSESSING THE ROLE OF HYDROLOGICAL STATISTIC DATA PERIOD ON FLOOD FORECASTING IN SEFIDROOD WATERSHED. WATERSHED ENGINEERING AND MANAGEMENT[Internet]. 2017;9(1 ):108-115. Available from: https://sid.ir/paper/234805/en

IEEE: Copy

SAMAN JAVANROODI, MOHAMMAD MAHDAVI, and BAHARAK MOTAMEDVAZIRI, “ASSESSING THE ROLE OF HYDROLOGICAL STATISTIC DATA PERIOD ON FLOOD FORECASTING IN SEFIDROOD WATERSHED,” WATERSHED ENGINEERING AND MANAGEMENT, vol. 9, no. 1 , pp. 108–115, 2017, [Online]. Available: https://sid.ir/paper/234805/en

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