Open Access Research Paper Views (294) Download (17) Estimating the probable maximum flood (PMF) using HEC-HMS Model: A case study in Northwest Iran-Ajichay’s Basin Ali. Hanafi, Faramarz Khoshakhlagh J. Bio. Env. Sci.6( 1), 227-235, January 2015. Key: Ajichay BasinHEC-HMS Mathematical ModelHydrographProbable Maximum Flood Details