برآورد رواناب ذوب برف به وسيله مدل اس . آر.ام و مقايسه نتايج آن با اطلاعات آبنمود رودخانه در آبخيز زيارت

Estimation of snowmelt runoff by using SRM model and comparison with hydrographic data in Ziarat River Basin

For estimation of the snowmelt runoff and testing the precision of simulation model in Ziarat river watershed, the SRM model (Snow & Runoff Modeling) has been used. Climatic, hydrologic and snow cover data have been collected through four different events during February to April 2001. Then the SRM model has estimated the stream discharge and net snowmelt runoff. To compare the estimated runoff by SRM model and observed values by direct measurement and hydrograph, by T-test, has conducted that, there is not any significant difference between observed and estimated values. It is concluded that the SRM model can be used properly for estimation of snowmelt runoff and related flood flow in l watersheds. It is further concluded that the factors such as physical characteristics of catchments area and the precision of existed data can be very important in properly estimation of runoff.