Author(s)

P. Stieber & D. Bellefleui

Abstract

An attempt to characterize the pair 'dry period- rain', in link with pollution, in urban hydrology P. Stieber*, D. Bellefleui* "G.E.M.C.E.A., Laboratoire de Geomecanique de I'E.N.S.G. - LN.P.L, Rue Marcel Roubault, BP 40, 54501 Vandoeuvre les Nancy, France *G.E.M.C.E.A., Laboratoire d'Hydrologie Urbaine de I'E.N.G.E.E.S., 1 QuaiKoch, BP 1039F, 67070Strasbourg cedex, France Summary In order to reduce the impact of pollution created by urban combined sewer overflows during storm events, technical services have tried to better understand the parameters influencing pollution. The duration of dry weather before a storm event, as well as the intensity of rain, have shown to be important factors. A statistical analysis of these two variables, firstly taken separatly and then in conjunction with each other has been made. The comparison of these results with pollution data shows a strong possibility of characterising pollution with these two variables. Introduction The

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