TY - JOUR ID - 36513 TI - Comparison estimate precipitation loss methods in HEC-HMS model to simulation runoff (Case study: Kan basin) JO - Journal of Range and Watershed Managment JA - JRWM LA - en SN - 5044-2008 AU - Rostamizad, Ghobad AU - Khalighi Sigaroodi, Shahram AU - Mahdavi, Mohammad AD - PhD. Student, Faculty of Natural Resources, University of Tehran, Tehran, Iran AD - Assistant Professor, Faculty of Natural Resources, University of Tehran, Tehran, Iran AD - Professor, Faculty of Natural Resources, University of Tehran, Tehran, Iran Y1 - 2013 PY - 2013 VL - 66 IS - 3 SP - 359 EP - 371 KW - curve number KW - Green & Ampt KW - HEC-HMS model KW - initial loss KW - precipitation loss DO - 10.22059/jrwm.2013.36513 N2 - Parameters as interception, infiltration, water storage on surface holes and soil profile, evapotranspiration are factors of loss water in a watershed and avoid from changing of precipitation to runoff. In this study, by use of HEC-HMS model and comparison of results of different methods of precipitation loss evaluation (Initial and constant, Green & Ampt, SCS curve number, Deficit & Constant and Exponential loss) consider to various purpose function percent error in peak tried to classify the methods. In this way, based on every purpose function, the method with least percent difference of observed discharge to calculated discharge take place in first preference and other methods take place in next preferences. Result show that, Exponential loss method placed in first preference and it selected as optimum method for simulation of runoff and Green & Ampt, Initial and constant, SCS curve number, Deficit & Constant methods placed in next preferences respectively. UR - https://jrwm.ut.ac.ir/article_36513.html L1 - https://jrwm.ut.ac.ir/article_36513_860084744690f47f26ff214807ad176c.pdf ER -