#NAME?

Abstract

in planning and development of a water resource project hydrological evaluations based on adequate hydrological data are necessary,, Long term data result in better assessment of the flow or desired parameters. Often long term data are not available and evaluation • has to be done with inadequate data. Annual rainfall data of 50 years from 20 stations alongwith the generated data are analysed in this dissertation to obtain the accurate long-term mean and long term standard deviation from short duration annual rain fall datac, Linear non-dimensional equations . werw obtained for long term mean and its standard deviation0 The method is given for evaluation of the constants appearing in these equations and un iterative procedure is recommended for calculation of long term mean and its standard deviation,