University of Sistan and Baluchestan Journal of Hydrosciences and Environment 2345-5608 3 5 2019 06 01 Estimating Suspended Sediment Load in Rivers Using the Imperialist Competitive Algorithm 45 51 4974 10.22111/jhe.2019.4974 EN A. Heydari Tashekaboud 1-Assistant Professor of Geography & Urban Planning, Faculty of Literature and Human Sciences, Ferdowsi University of Mashhad, Mashhad, Iran Sh. Heydari Tashekaboud 2 Ph.D. Student of Water Engineering department, Faculty of Agriculture, University of Sari, Sari, Iran Journal Article 2019 05 06 Erosion phenomenon and sediment transition are among the most complex hydrodynamics problems, so their governing equations cannot be determined easily. This paper used the Imperialist Competitive Algorithm (ICA) to predict the daily suspended sediment loads (SSLs) of the Zarinehrood River. The input was composed of SSL of the sedimentary station located in the Zarinehrood River during 2005-2015 (10 statistics years) with the flow discharge variable during this month. The results of implementing ICA showed the high accuracy of the ICA showing R² = 0.89 and RMSE = 235 mg/L. In general, the results obtained from the ICA used in this paper showed the high capability and accuracy of the ICA in estimating SSL of the Zarinhorod River consumption reforms. https://jhe.usb.ac.ir/article_4974_eff0cac1676728e23176e80381ef6621.pdf