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在广泛收集河龙区间陕北片有关统计资料、调查资料的基础上，通过抽样调查和典型调查，确定水土保持措施保存数量，结合梯、林、草坡面措施减洪减沙机理，建立了考虑措施质量的坡面措施减洪减沙指标体系。根据水沙平衡原理，采用逐步逼近求解法，求出原始状况下的产洪产沙量，计算水土保持措施减洪减沙效益。
On the basis of extensive collection of relevant statistical data and survey data from the northern Shaanxi section of Hejian section, sampling and typical surveys were conducted to determine the amount of conservation measures for water and soil conservation and to establish a mechanism of flood control and sediment reduction based on the measures of slope, forest and grassland Measures to reduce the flood and reduce sediment index system considering slope quality of measures. According to the principle of water and sediment balance, the method of stepwise approximation was used to calculate the flood discharge and sediment yield under the original conditions and calculate the benefit of flood and sediment reduction by soil and water conservation measures.