http://117.252.14.250:8080/jspui/handle/123456789/2674 Tue, 24 Feb 2026 08:13:44 GMT 2026-02-24T08:13:44Z http://117.252.14.250:8080/jspui/handle/123456789/2677 Title: M-6 : Multipurpose operation of a reservoir Authors: Jain, S. K. Abstract: Reservoir operation forms a very important part of planning and management of water resources systems. Once a reservoir has been developed, detailed guidelines have to be given to the operator which enable him to take decisions about storing or releasing water. In case of a single purpose reservoir, the aim is to find the optimum amount of water to be released from the reservoir given the amount of water available in the reservoir, future demands and any information available about the inflows which are likely to enter the reservoir. For a multipurpose reservoir, in addition to the above, it is also required to optimally allocate the release among several purposes. The basic guideline which is available to a reservoir manager is usually in the form of rule curves which specify the reservoir levels to be maintained during different times of a year. As it may not always be possible to adhere to rule curves, guidelines are also given as to how the deviations should be adjusted. In this report, various procedures used to develop rule curves for a single purpose and multipurpose reservoir have been described. It is also discussed as to how to arrive an optimal decision in case of an unforeseen event. New techniques of determining reservoir operation procedure like simulation, optimization and real time operation have also been discussed. Tue, 01 Jan 1985 00:00:00 GMT http://117.252.14.250:8080/jspui/handle/123456789/2677 1985-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/2676 Title: M-3 : Reservoir capacity computation Authors: Seethapathi, P. V.; Jain, S. K. Abstract: The present report deals with computation of the storage capacity required in a reservoir. In the beginning definition of a number of terms used in this connection is given. In all three methods which are used for the purpose of computing the required storage capacity of a reservoir are given. These are mass curve method, method based on linear programming and the simulation method. A detailed list of data required for this computation is also given. The recommendations of IS code have been given in appendix which also contains description of the Linear Decision Rule which is a formulation based on linear programming. Sun, 01 Jan 1984 00:00:00 GMT http://117.252.14.250:8080/jspui/handle/123456789/2676 1984-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/2675 Title: M-2 : Processing of precipitation data Authors: Seth, S. M.; Ramasastri, K. S. Abstract: Preliminary processing of the precipitation data is essential before it is put to further use in analysis. Processing of precipitation data has two major objectives. One is to evaluate the data for its accuracy and the other is to prepare the data in a form appropriate for subsequent analysis and other applications. While some errors are observational or instrumental, others occur while recording, transmitting and storing the data. With the volume of precipitation data ' to be handled increasing, manual quality control would be impossible and the advent of high speed digital computers has made possible computerised processing of precipitation data. Precipitation data processing could be conceived of as a system through which the basic (raw) data could be transferred into freely accessible and readily usable form. Essentially, the system would consist of a number of manual and computerised processing procedures which include besides data collection, i) preliminary processing, ii) storage of data on computer compatible devices, iii) quality control, iv) editing, v) data conversion vi) further analysis and vii) storage of analysed data into computer disc files The system developed by users of precipitation data for its processing has to be adaptable both for climatological analysis as well as operation in real time. It has to be flexible enough to handle data from future precipitation data collection sources such as Radar and Satellites. In this manual appropriate procedures for carrying out the various components of the processing system are described keeping in view the precipitation data collection and storage in India. Where necessary, the procedures are explained with examples. Two computer programmes, one for identifying missing data in daily rainfall data and the other for distribution of daily rainfall into hourly rainfall and computing the average hourly catchment rainfall are also provided. Sun, 01 Jan 1984 00:00:00 GMT http://117.252.14.250:8080/jspui/handle/123456789/2675 1984-01-01T00:00:00Z