AWBM Simulation in no-available data watersheds of Fars province

There are diffrent methods for estimating runoff from rainfall in catchments. One ofthis methods is using hydrological models. Hydrological models allow the simulatingrainfall-runoff process in noavailable data watersheds (catchments) with low cost andtime. The AWBM model that developed by Walter Boughton, is one of this kinds ofmodels that can estimate runoff from daily or hourly rainfall. Application of themodel for daily results is using in water supply and for hourly result is using in floodcontrol. in this model storage capacity is divided into three storage parametes (C1, C2, C3). It can estimate the related partial areas (A1, A2, A3) and simulate the runofffrom partial areas using daily rainfall, discharge and evatranspiration with optimizingthe parameters. The objective of this study is to evaluate the performance of the variable sourcearea AWBM model in some Fars province catchments. The analysis was carried outusing data from selected catchments، namely Kol, Maharloo, Zohre and Mond, in Farspronince. The daily rainfall, runoff and evatranspiration selected with about 20 yearsduration. Daily rainfall regionalized with using TPSS method and daily dischargeconverted to spasial discharge. The correlation cofficient between estimated andobserved runoff was evalutated by optimizing the parameters. The results showed thatthe AWBM model, gives acceptable results and have adequate capability fordesigning.