Comparing Regional and At-site L-moments for Estimation of Maximum Monthly Rainfall in the Zayandehroud Basin

Document Type : Research Paper


1 Grad. Student of Irrigation, Isfahan University of Technology

2 Associate Professor of Irrigation, Isfahan University of Technology


One of the conventional problems in frequency analysis and prediction of various hydrologic events is lack of long time records of such events in gauging stations. This problem together with inaccurate at-site estimations has caused increasing application of regional methods for such procedures. In this study, the above mentioned method was used for selection of parent distributions to fit maximum monthly rainfall data of 18 sites in the Zayandehroud basin and, consequently, the GEV distribution was selected to estimate the related parameters and quantiles.


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