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1997年汛期黄河潼关站枯水少沙，仅发生一次流量大于3000m3/s的洪水，汛期水量55．53亿m3，较多年平均值偏枯69．3％，是1929年以来水文记载的最小值。洪水前，在潼关以下宽浅河段进行清淤疏浚，采用射流冲沙的方法，以冲为主，冲沙与扰流相结合进行作业，疏浚主河道中的浅滩，封堵串流汊道。清淤后，河势趋于规顺，浅滩段比降增大，水流相对集中，河道形态发生有利变化，增大了河道泄洪输沙能力。7月29日至8月6日洪水期，潼关河床发生强烈冲刷，潼关高程下降1．80m。经峰后河床回淤，汛末潼关高程328．02m，比汛前下降0．22m。
In the flood season of 1997, the Tongguan station of the Yellow River witnessed low water flow and only one flood with a flow rate of more than 3000m3 / s occurred. The flood season water volume was 5.553 billion m3, 69.5% more than the annual average value, which is the minimum hydrological record since 1929. Before the flood, dredging and dredging was carried out in the shallow and shallow waterway below Tongguan, using jet-flushing and sand blasting, mainly flushing and red sand mixing with spoiler to dredge the shoals in the main channel and block the flow of water . After dredging, the river regime tends to be regulated, the ratio of shoal sections increases, the water flow is relatively concentrated, and the shape of the river channel is changed favorably, which increases the flood discharge and sediment transport capacity of the river. During the flood period from July 29 to August 6, there was a strong erosion of the Tongguan riverbed and the elevation of Tongguan dropped 1.80m. After the peak siltation of the riverbed, floodgate Tongguan elevation 328.02m, down 0.22m before flood season.