Hydrology and Earth System Sciences www.hydrol-earth-syst-sci.net 1027-5606 1607-7938 14 7 2010 10.5194/hess-14-1221-2010 http://www.hydrol-earth-syst-sci.net/14/1221/2010/ http://www.hydrol-earth-syst-sci.net/14/1221/2010/hess-14-1221-2010.html http://www.hydrol-earth-syst-sci.net/14/1221/2010/hess-14-1221-2010.pdf 1221 1232 2010-07-09 Stochastic rainfall analysis for storm tank performance evaluation I. Andrés-Doménech A. Montanari J. B. Marco Instituto de Ingeniería del Agua y Medio Ambiente, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022, Valencia, Spain Facoltà di Ingegneria, Università di Bologna, Viale Risorgimento 2, 40136 Bologna, Italia Stormwater detention tanks are widely used for mitigating impacts of combined sewer overflows (CSO) from urban catchments into receiving water bodies. The optimal size of detention tanks depends on climate and sewer system behaviours and can be estimated by using derived distribution approaches. 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