Regional Flood Frequency Analysis Using Computer Simulations
Journal: International Journal of Advanced Engineering Research and Science (Vol.4, No. 1)Publication Date: 2017-01-25
Authors : Anusha M; Surendra H J;
Page : 5-235
Keywords : Gumbel distribution; General Extreme value; Log normal; Log Pearson distribution.;
Abstract
Different probability distribution methods were employed to determine the flood frequency analysis using computer simulations. Many probability distributions including Gumbel, lognormal, log-Pearson type iii, General Extreme value have been tried to fit the data. The length of record for most of the stations is over 10 years (chosen from 1956 0nwards). The data was procured from J.R.M.Hosking for various project sites. The common time period of 1956 onwards has been chosen only to avoid the effect of interception of basin due to construction of storage reservoir and was also subject of flood data. The best fitting distribution works out to be General Extreme Value Distribution. Gumbelâ?™s distribution ranks poorly among different probability distributions. A trial version of probability software is used to evaluate the best fit distribution and parameters of distribution.
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