Open Access Research Paper Views (935) Sensitivity analysis of SWMM model parameters for urban runoff estimation in semi-arid area Ali Moafi Rabori, Reza Ghazavi, Mohsen Ahadnejad Reveshty J. Biodiv. & Environ. Sci. 10(5), 284-294, May 2017. Keywords: Calibration, Sensitivity analysis, SWMM, Urban runoff peak and volume, Zanjan city watershed Details