COMPARISON OF DIFFERENT METHODS FOR ESTIMATING OF MONTHLY DISCHARGE MISSING DATA IN GRAND KAROON RIVER BASIN

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NAGHDI R.; SHAYANNEZHAD M.; SADATI NEJAD S.J.

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Journal: JOURNAL OF WATERSHED MANAGEMENT RESEARCH Year:2010 | Volume:1 | Issue:1 Page(s): 59-73

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Title

COMPARISON OF DIFFERENT METHODS FOR ESTIMATING OF MONTHLY DISCHARGE MISSING DATA IN GRAND KAROON RIVER BASIN

Author(s)

NAGHDI R. | SHAYANNEZHAD M. | SADATI NEJAD S.J. | Issue Writer Certificate

Keywords

REGENERATIONQ3

GRAND KAROON RIVER BASINQ3

ARTIFICIAL NEURAL NETWORKSQ2

MONTHLY DISCHARGEQ3

Abstract

Acceptable statistical data is the main basis for hydrological studies. Because there are lots of continuous and disperse blanks in most of hydrological data such as river discharge, it is necessary to estimate and forecast these data by suitable methods. These blanks are caused by different factors such as loss of data record, elimination of incorrect data and disordered function of measurement instruments. There are many procedures to estimate and regenerate these data, and depending on the condition of a given station, a particular procedure may produce the best results. In this study, the method of ARTIFICIAL NEURAL NETWORKS has been compared to other methods including normal ratio, graphical, simple linear regression, multivariate linear regression and time series (auto regression) methods, in order to regenerate the monthly and annual discharge data for hydrometric stations in GRAND KAROON RIVER BASIN. After eliminating observed data, their values were estimated using mentioned procedures. Then, the priority of each procedure was assessed by means of rooted mean square of errors (RMSE). The results of monthly data REGENERATION indicated that ARTIFICIAL NEURAL NETWORKS was the best procedure in most stations with a frequency value of 59.26%.

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APA: Copy

NAGHDI, R., SHAYANNEZHAD, M., & SADATI NEJAD, S.J.. (2010). COMPARISON OF DIFFERENT METHODS FOR ESTIMATING OF MONTHLY DISCHARGE MISSING DATA IN GRAND KAROON RIVER BASIN. JOURNAL OF WATERSHED MANAGEMENT RESEARCH, 1(1), 59-73. SID. https://sid.ir/paper/230245/en

Vancouver: Copy

NAGHDI R., SHAYANNEZHAD M., SADATI NEJAD S.J.. COMPARISON OF DIFFERENT METHODS FOR ESTIMATING OF MONTHLY DISCHARGE MISSING DATA IN GRAND KAROON RIVER BASIN. JOURNAL OF WATERSHED MANAGEMENT RESEARCH[Internet]. 2010;1(1):59-73. Available from: https://sid.ir/paper/230245/en

IEEE: Copy

R. NAGHDI, M. SHAYANNEZHAD, and S.J. SADATI NEJAD, “COMPARISON OF DIFFERENT METHODS FOR ESTIMATING OF MONTHLY DISCHARGE MISSING DATA IN GRAND KAROON RIVER BASIN,” JOURNAL OF WATERSHED MANAGEMENT RESEARCH, vol. 1, no. 1, pp. 59–73, 2010, [Online]. Available: https://sid.ir/paper/230245/en

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