Rainfall Analysis for Rainwater Management in a Drought Prone Area

Abstract

The probability analysis of 31 years (1958-88) rainfall at Bikaner indicated that maximum two days rainfall of 1.01 to 5 years return period vary from 16 to 82 mm with 2 to 24 days as the corresponding length of dry spell and these could be taken as the design storms for rainwater harvesting projects. For planning of the soil and water conservation measure maximum 4 days rainfall of 10 years return period (108 mm) can be taken as the design storm. Probability of growing pasture in this area is 99%, whereas for rainfed crop growing it is only 40% and that too by the middle of July only.