On some hydrometeorological aspects of Narmada basin

Abstract

A study of some hydrometeorological aspects of Narmada Basin has been attempted. Monthly and annual normals of rainfall and of number of rainy days have been worked out for the basin from the respective normals for individual stations. Variability of monthly rainfall in the monsoon season (June-September) and of seasonal and annual rainfall have been obtained for 20 selected stations of the basin. Highest ever 24-hr rainfall amounts at important stations recorded upto 1960 have also been included. Climatological data of maximum and minimum temperatures and of relative humidity have been compiled and discussed.

All the major rainstorms for this basin during the period 1891-1968 have been studied by isohyetal method and their depth duration curves obtained. Major rainstorms for the basin have been discussed in detail together with the synoptic situations responsible for them. Depth-area curves for various durations have also been drawn for major rainstorms and envelope Curves obtained. Peak discharge at Garudeshwar gauge site on 6 August 1968 has been computed from the precedent precipitation in the basin.