• Reverse stream flow routing by using Muskingum models

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      https://www.ias.ac.in/article/fulltext/sadh/034/03/0483-0499

    • Keywords

       

      Reverse stream flow routing; Muskingum model; parameter estimation; unconstrained minimization; linear model; nonlinear model.

    • Abstract

       

      Reverse stream flow routing is a procedure that determines the upstream hydrograph given the downstream hydrograph. This paper presents the development of methodology for Muskingum models parameter estimation for reverse stream flow routing. The standard application of the Muskingum models involves calibration and prediction steps. The calibration step must be performed before the prediction step. The calibration step in a reverse stream flow routing system uses the outflow hydrograph and the inflow at the end period of the inflow hydrograph as the known inputs and Muskingum model parameters are determined by minimizing the error between the remaining portion of the predicted and observed inflow hydrographs. In the present study, methodology for parameter estimation is developed which is based on the concept of minimizing the sum of squares of normalized difference between observed and computed inflows subject to the satisfaction of the routing equation. The parameter estimation problems are formulated as constrained nonlinear optimization problem, and a computational scheme is developed to solve the resulting nonlinear problem. The performance evaluation tests indicate that a fresh calibration is necessary to use the Muskingum models for reverse stream flow routing.

    • Author Affiliations

       

      Amlan Das1

      1. Civil Engineering Department, National Institute of Technology, Durgapur 713 209
    • Dates

       
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