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River suspended sediment modelling using a fuzzy logic approach

✍ Scribed by Ozgur Kisi; M. Emin Karahan; Zekai Şen

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
527 KB
Volume
20
Category
Article
ISSN
0885-6087

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✦ Synopsis

Abstract

Correct estimation of sediment volume carried by a river is very important for many water resources projects. Conventional sediment rating curves, however, are not able to provide sufficiently accurate results. In this paper, a fuzzy logic approach is proposed to estimate suspended sediment concentration from streamflow. This study provides forecasting benchmarks for sediment concentration prediction in the form of a numerical and graphical comparison between fuzzy and rating‐curve models. Benchmarking was based on a 5‐year period of continuous streamflow and sediment concentration data of Quebrada Blanca Station operated by the United States Geological Survey. The benchmark results showed that the fuzzy model was able to produce much better results than rating‐curve models. The fuzzy model proposed in the study is site specific and does not simulate the hysteresis effects. Copyright © 2006 John Wiley & Sons, Ltd.

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