Frequency analysis of upper cauvery flood data by L-moments

The objectives of the present study are to investigate the hydrological homogeneity of Upper Cauvery annual maximum flow data and to select a suitable distribution for the frequency analysis. The L-moments method is used in this analysis. The Upper Cauvery river basin is shown to be hydrologically heterogeneous. The 3 parameter log normal and the generalized extreme value distributions are recommended for the frequency analysis of data in this region.