Evaluating the performance of convex and corrected Att-Kin methods in operation of finding routing of flood (case study: Dalki river) – JBES

fishermen_at_dawki_riverBohraniFard Ayoub, Rouhina Ayat, MohagheghSeyed Saeid, Asadolah Talebifar

Islamic Azad University, Hamadan Branch, Young Researcher Club, Hamedan, Iran.

Islamic Azad University, Yasouj Branch, Young Researcher Club, Yasouj Branch. Iran

Young Researchers and Elite club, Hamedan Branch, Islamic Azad University, Hamedan, Iran

Watreshed Management Engineering, Iran

Key words: Finding flood routing, Convex method, Nash–Sutcliffe, Dalki river.

Abstract

In this research with the use of the hydrological convex sub-methods the operation of finding flood routing was done between the Sarghanat and Kelal stations located in Dalkiriver. thecharacterstics of 26 flood was extracted as model input and then to evalute model performance and predict the output of hydrographs the Nash–Sutcliffe criteria, RMSE and relative error was used. dusk-falling-over-the-backwaters-kumarakomResults of this study showed that Convex graphical sub-method can predict the outputs of hydrographs with higher precision as compared to other three methods. Moreover another result of this research is the priority of the use of 50% discharge as input discharge in model and results showed that in all sub-methods the predictiong the discharges of lower than 700 cubic meter per second had higher precision compared to discharges more than 700 cubic meter per second.

jbes-vol4no2-p295-301Get the original articles in Source: Volume 4, Number 2, February 2014 – JBES

Journal Name: Journal of Biodiversity and Environmental Sciences (JBES)

Published By: International Network for Natural Sciences

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