A Review of Criteria of Fit for Hydrological Models

Autor: Waseem, M., Mani, N., Andiego, G., & Usman, M.
In:

International Research Journal of Engineering and Technology (IRJET)

Bandangabe: 04
Auflage: 11
ISBN: e - ISSN: 2395 - 0056, p - ISSN: 2395 - 0072
Seite: 1765 - 1772
Jahr: 2017

Einordung:
Institut: Professur Wasserwirtschaft

Abstract:
Hydrological model performance and its
behavior is evaluated by comparison of observed and simulated variables. Mostly, the
comparison is done between measured and simulated flows. Hydrologist use efficiency criteria to know the closeness of the observed and model-
simulated values. Correlation-based methods have been used widely to evaluate the model performance. These measures are sensitive to peak flows but insensitive for low flow values, due
to these limitations Nash-Sutcliffe efficiency (E) and coefficient of determination (R2) can give better agreement even for very poor models. So different modifications to these criteria are
presented in this study. This paper also emphasizes on different efficiency criteria, their pros and cons, and suitable
conditions for each of the different efficiency criteria. In this study goodness of fit has been tested for three different scenarios, and it is recommended that the use of correlation-based measures alone for model evaluation is not suitable, it should be a combination of different efficiency criteria.
Key Words:
Criteria of fit, correlation-based measures, NSE, R2

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