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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology

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Proc. IAHS, 364, 123-127, 2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
16 Sep 2014
Modelling approach for the rainfall erosivity index in sub-humid urban areas in northern Algeria
I. Touaibia1, N. Abderrahmane Guenim1, and B. Touaibia2 1Dept. d'Hydraulique. University, Abou Bakr Bel Kaid Tlemcen, Algeria
2Ecole Nationale Supérieure d'Hydraulique, Blida, MVRE, Algeria
Keywords: Statistical models, specific erosion, sub-humid climate, urban hydrology, USLE Abstract. This work presents an approach for storm water erosivity index modelling in the absence of measurement in an urban area, in a sub-humid climate. In torrential storms, floods, loaded with sediments, obstruct storm water drainage. With the aim of estimating the amount of sediment that can be deposited on a stretch of road, adjacent to the study area, the erosivity index is determined from a count of 744 rain showers recorded over a period of 19 years. The Universal Soil Loss Equation (USLE) of Wischmeier and Smith is applied, where only the index of erosivity is calculated; it is based on the intensity of the rain starting the process of erosion in the basin. Functional relations are required between this factor and the explanatory variables. A power type regression model is reached, making it possible to bring a decision-making aid in absences of measurements.

Citation: Touaibia, I., Abderrahmane Guenim, N., and Touaibia, B.: Modelling approach for the rainfall erosivity index in sub-humid urban areas in northern Algeria, Proc. IAHS, 364, 123-127,, 2014.
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