In most of the basins, due to the lack of sedimentation stations, there is no accurate information on sediment deposition and soil erosion. In such basins, empirical models are used to estimate the sediment rate. At the basin scale, the applicability of these models is troublesome. The objectives of this study were to determine the erosion status of the Zarivar lake basin and to evaluate the efficiency of the Factorial Scoring Model, FSM, in estimating the sediment rate. Physiological and hydrological characteristics of 10 sub-basins of Zarivar lake were obtained using field measurements and aerial data in the GIS environment. The specific weight of the sediments was calculated in the laboratory and used to determine the weight of sediments. The sediment rate in sub-basins was measured in situ. Furthermore, by determining the effective parameters, the sediment rate for each sub-basin was obtained using FSM, and the results were compared with the measured rate. For the whole basin, the average, minimum, and maximum rate of observed sediment were 0.28, 0.007, and 1.17 m³/ha.yr, respectively. However, these rates were obtained by FSM as 103.70, 20.90, and 365 m³/ha.yr, respectively, which differed from the observed values. Based on the results, the model is not sufficiently efficient to evaluate the sediment rate in the studied sub-basins.

大部分流域由于缺乏沉积站，没有准确的沉积物沉积和水土流失信息。在这些盆地中，经验模型用于估计沉积速率。在流域尺度上，这些模型的适用性是有问题的。本研究的目的是确定 Zarivar 湖盆的侵蚀状况，并评估因子评分模型 FSM 在估算沉积物速率方面的效率。利用GIS环境下的野外测量和航空数据，获得了扎里瓦尔湖10个子流域的生理和水文特征。沉积物的比重是在实验室中计算出来的，用于测定沉积物的重量。子流域中的沉积速率是原位测量的。此外，通过确定有效参数，使用 FSM 获得每个子流域的沉积速率，并将结果与​​实测速率进行比较。全流域观测沉积物的平均、最小和最大速率分别为0.28、0.007和1.17 m³ /ha.yr，分别。然而，FSM 获得的这些速率分别为 103.70、20.90 和 365 m ³ /ha.yr，与观测值不同。根据结果​​，该模型不足以有效评估所研究的子流域中的沉积速率。