Volume 18, Issue 69 (fall 2014)                   jwss 2014, 18(69): 75-87 | Back to browse issues page

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Dehghani N, Vafakhah M. Evaluation of Bed Load Hydraulic Formulas in Navrud, Gilan Province. jwss 2014; 18 (69) :75-87
URL: http://jstnar.iut.ac.ir/article-1-2864-en.html
Dept. of Watershed Management, Collage of Natural Resour., Tarbiat Modares Univ., Iran , vafakhah@modares.ac.ir
Abstract:   (10529 Views)

Sediment is as one of problems related to water resources utilization. Numerous formulas have been developed for bed load estimation in rivers. In this study, eleven common formulas including hydrologic and hydraulic methods such as Einstein Tofalti Meyer, Peter and Muller Van Rayne Modified Van Rayne Yalin Bagnold Fraylink Habibi and Sivakumar and Samaga were used for selection of the most suitable bed load estimator formula in Kharajgil hygrometry station on Navrud river. The results showed that Habibi and Sivkumar formula is the most suitable with the mean computed to observed data=1.35, standard deviation computed to observed=1.96, RMSE=1.63 and ill sorted ratio(computed transportation ratio to observed)=33.82% within the range of 0.5 to 2.

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Type of Study: Research | Subject: Ggeneral
Received: 2015/01/11 | Accepted: 2015/01/11 | Published: 2015/01/11

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