JFET_V11_N3_RP4 N. Vivekanandan Journal on Future Engineering and Technology 2230 – 7184 11 3 25 30 Correlation, Discharge, Mean Absolute Error, Rating Curve, Water Level Development of Stage-Discharge Rating Curve (SDRC) is of utmost importance for reliable planning, design and management of water resource projects. The SDRC is time dependent and very often exhibits a random phenomenon with fluctuation. For establishing the SDRC, Non-Linear Regression Approach (NLRA) is widely applied to many gauging sites worldwide for many decades. The SDRC is based on power equation that is used to establish a relationship between stage (i.e., water level) and discharge, whose variables can be determined by the method of least squares. In this paper, a study on development of SDRCs for Aamdabad, Nighoje and Wegre gauging sites located in the upper Bhima basin upto Ujjani reservoir is carried out. The performance of the NLRA used for developing the SDRCs is evaluated by correlation coefficient and the mean absolute percentage error. The paper presents the procedures adopted in the development of SDRCs using NLRA and the results obtained thereof. February - April 2016 Copyright © 2016 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=5923