UM-1/96-97 : Software for reservoir analysis (SRA)

Abstract

Because of the high time and space variability of rainfall and uncertain nature of monsoon in India, it is imperative to utilize the available water resources in the optimal and efficient manner. The reservoirs are one of the most important components of a water resources development project in this country. More than 3000 major and medium dams have already been constructed all over the country to tap the available water resources so that the water can be utilized in accordance with the requirements of mankind.

The efficient use of water resources requires not only judicious design but also proper management of the hydraulic structures. Further, in view of the increasing demands, the aim of water resources systems management is to search for operation policies so that various demands can be satisfied to the maximum extent possible. Reservoir operation forms a very important part of the planning and management of water resources system. A large number of models, generalized as well as system specific, have been developed during the last two decades. _ Some popular models include HEC-3 and HEC-5 of Hydrologic Engineering Centre, SIMYLD-II of Texas Water Development Boird, the ACRES, the RESER and the IRIS etc. In view of the importance of reservoir operation problem in Indian context and the non availability of a generalised' software for reservoir analysis, the National Institute of Hydrology, Roorkee has taken up the task of developing a generalised software for reservoir analysis, taking particular care of the data availability and hydrological conditions in Indian context. The software contains menu driven options for reservoir analysis. Various modules included in the software for reservoir analysis are: capacity computation using sequent peak algorithm, storage-yield analysis, various methods of reservoir routing, interpolation of elevation-area-capacity table, Inflow estimation in the reservoir using the rate of rise information, simulation of hydropower analysis and estimation of firm power, determination of initial trial rule curve levels, stretched thread method of operation and simulation of a multipurpose Multireservoir system for conservation operation. Using the simulation analysis, the reliability analysis can be carried out and operation policy for a system can be refined. The software is capable of presenting the results in tabular as well as graphical form.