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In this paper, an application of the Jaya Algorithm (JA) is presented, to develop an operation optimization model for the Mula reservoir, located on the upper Godavari Basin, in India. The mentioned algorithm is a relatively new optimization technique, which is algorithm-specific and parameterless. In JA, there is no need for algorithm-specific parameter tuning, unlike with other heuristic techniques. To test its applicability, the model performance has been compared with that of other models for hypothetical four reservoir system studies available in the literature. Simulations for hypothetical four reservoir system have proven that JA is a better solution for a number of Function Evaluations when compared with the results obtained by means of other evolutionary methods such as Genetic Algorithms, Particle Swarm Optimization, Elitist Mutated Particle Swarm Optimization, and Weed Optimization Algorithm models reported in previous studies. Simulations have been carried out for real time operation of the Mula reservoir, and have revealed its superior performance when comparing the water releases proposed by it and the ones proposed by existing policy. Hence, from the two case studies presented, it can be concluded that the JA has potential in the field of reservoir operation and can be further explored to operation optimization of existing multi-reservoir system, with lower computations.Sustainability 2020, 12, 84 2 of 21 alternative to meet the present and future water requirements. Many researchers have been working towards rational approaches to allot the water very optimally in every essence. Many approaches can be found in the literature, such as can be read in in every essence; vagaries of approach have been commended in the literature with excellent opinions regarding the distribution of resources [2].The techniques suggested and implemented in reservoir operation studies are chance constrained Linear Programming (LP) by [3], in which multi-purpose reservoir operation optimization was carried out with the aim of maximization of hydropower generation and fulfillment of irrigation requirements according to the reliability level. The nonlinear power production function was linearized and a solution was obtained in the range of the specified tolerance. In a similar way, a multi-purpose reservoir operation optimization was carried out by using Non-Linear Programming (NLP) in [4] for the Koyna dam, Maharashtra, India. Dynamic Programming (DP) [5] was implemented in the integration with fuzzy rules and simulation studies to generate the general operating policies for Dez and Karoon reservoirs in Iran. Ant Colony Optimization (ACO) was implemented for the reservoir operation optimization of the Dez reservoir system, Iran, in [6], and resulted in a global optimal solution although the tuning of parameters was recommended as the model is parameter sensitive. The application of the Bat Algorithm (BA) to the Karoun-4 reservoir system in Iran and to another hypothetical reservoir system showed the merits of the BA over o...

This study deals with trend analysis of observed annual peak flow time series data at four stream gauging stations in the Tapi Basin. Innovative trend analysis, recently proposed by S°en, and Mann Kendall test are used to ascertain the trend in extreme annual flow (flood) at aforesaid gauging stations in the Tapi Basin. Also, the time series of extreme flow data have been checked for their serial correlation and, subsequently, flood frequency analysis is undertaken to obtain floods of different return periods. The fitted probability distributions are also used to predict extreme flow into the Ukai Reservoir on the basis of information from upstream gauging stations. The methodology has also been used to predict runoff into the reservoir from the unguaged catchments.

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