Mayank B. Patel
In this study, a flood frequency analysis of Narmada River basin in India was undertaken using Gumbel Distribution Method probability distribution method. The study was motivated by the need for safe and economic hydrologic design and assessments in the catchment area. Gumbel Distribution Method distribution was used to model the annual peak discharge for the river for the period 1984 to 2013 (30 years).The probability distribution function was applied to return periods (T) for 2yrs, 5yrs, 10yrs, 25yrs, 50yrs and 100yrs commonly used in for engineering design of hydraulic structures. The estimated discharges obtained are 22499.53 m3/s,37464.53 m3/s ,47336.17 m3/s , 59810.03 m3/s,69062.28 m3/s and 74442.23 m3/s respectively. These values are useful for the hydraulic design of structures in the catchment area and for stormwater management.
Flood Frequency Analysis, Gumbel Distribution Method, Peak Discharge, Return Periods (T)