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Nigerian Journal of Technology

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Reliability assessment of Thomas Fiering's method of stream flow prediction

M. I. Alfa, M. A. Ajibike, D. B. Adie

Abstract


This study was carried out to assess the reliability of Thomas-Fiering’s method of stream flow prediction. The 19 years gauged data of 1955-1973 was extended to 2016 using the model. Model calibration was done by multiple linear regressions of the gauged and synthetic data of 1956-1973. The linear equations developed for January to December were used for adjustment of the three sets of stream flow data generated for 1974-2016. The reliability assessment was done based on the extent to which the unbiased statistics (mean, standard deviation and correlation coefficients) of the 1955-1973 stream flow data were preserved in the synthetic stream flow for 1955-2016. The comparison was done using linear regression and One-Way ANOVA (95% Confidence level) to check for the reliability of the generated data. The coefficients of determination, P-values, F-values and critical F-values were used to estimate the reliability index. Synthetic data was found to be 95.9% reliable.

Keywords: Ofu River, Reliability, Stream flow, Synthetic, Thomas Fiering’s model




http://dx.doi.org/10.4314/njt.v37i3.35
AJOL African Journals Online