PHOTO ANALYSIS OF YAMUNA VALLEY FOR FLOW PREDICTION AT LAKHWAR

Abstract

With the increasingdemand for water in various spheres of life, efficient prediction of etre nflow is gaining wide spread importance all over the world. The accurate and exact knowledge of Hydrologic cycle is must for correct prediction of atresi flaw. The runoff is the most important element in the hydrologic cycle. wUch has to be known or predicted for predic tion of strewn flowe which is needed for planning of demo and reservoirs for irrigation d her&xo power eteme, flood con- trols Inland navigation, I4tnioipai and Industrial water supply projects. Ae eioh hydrologists and engineers are always in se h of new and better technique, for stream flow prediction* Photoonalyois have bean. successfully applied for study and di elopment in many varied field, e.g. surveying and mapp- ing, Earth resources prospecting, Geomorphological inveotig tione, Urban planning, forest inventory water resources plc .» Ing eta. It Is one of the fastest techniques and now many developed countries have started using Betel .ite imagery and other remote sensing techniquesas well for tapping all the earth resources for betterment of their people. Keeping in view this aspect a study has been carried out for Yea catehment ueinp' photo.-enalyais techniques for stream flow prediction. The stream flow i a a function of Geolo q, GeonorDbology stream and channel geometries, rook. soil type, vegetal cover ad I. d use features td as such all these were interpreted with the help of Aeries,. Photograph. A no• of approaches were used for computing the atxe fors and then these were compared with the observed flow values. As a result of this study it is felt that t rther extensive studies mqy be carried using the following methods U) Rational method, (ii) Water balance method using two axis approach (iii) Rua off coefficient for different type of egetal cover and land use features using two constant approach, for predic-tion of stream flows in ungeuged catchments. be results of this study is Wiz► encouraging and it is hoped that further work using thee, and other similar techniques will result in development of a suitable methodology in near future for prediction of etre flowe for imsl *i