Flood Frequency Analysis at Ungauged Site Using Group Method of Data Handling and Canonical Correlation Analysis

Basri Badyalina and Ani Shabri

Modern Applied Science, 2015, vol. 9, issue 6, 48

Abstract: Model based on canonical correlation analysis (CCA) and group method of data handling (GMDH) are explicate to obtain a better flood quantile estimation at ungauged sites. CCA is used to build a canonical physiographical space by applying the site characteristics from gauged station. Then GMDH model is used to distinguish the functional relationship between flood quantiles and the physiographic variables in the CCA space. The proposed model is applied to 70 catchments in Peninsular Malaysia. The jackknife procedure is used to evaluate the performance of proposed model. Result of proposed model compared with Traditional CCA model, linear regression (LR) model and GMDH model. The results indicated that the proposed model CCA-GMDH deliver the best performance among all models in terms of prediction accuracy.

Date: 2015
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