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汾河流域年降雨量自５０年代以来基本保持在同一水平，但径流、泥沙大幅度减少，径流从５０、６０年代的年均１７亿ｍ３，减少到９０年代的不足５亿ｍ３；泥沙从５０、６０年代的年均５２２０万ｔ，减少到９０年代的２５０万ｔ。近十几年汾河河津站实测日流量平均每年有１００多天小于１ｍ３／ｓ，长时间接近断流状态，使得汾河河口段排洪能力降低，这对汾河的防洪十分不利。相同降雨条件下，径流大幅度减少，说明该流域综合开发治理程度较高，同时也增加了水质污染的程度。输沙量各年代均呈下降趋势，从各粒径级泥沙所占百分比的变化看，泥沙组成在变细。
The annual rainfall in Fenhe River Basin has basically kept the same level since the 1950s, but the runoff and sediment have been greatly reduced. The runoff has decreased from 1.7 billion m3 in the 1950s and 1960s to less than 500 million m3 in the 1990s. Sediment From an average of 52.2 million tons in the 1950s and 1960s to 2.5 million tons in the 1990s, Nearly a dozen years Fenhe Hejin station measured daily average of more than 100 days a year less than 1m3 / s, for a long time close to the current state, making the Fenhe estuary drainage capacity reduced, which is very unfavorable to the Fenhe flood control. Under the same rainfall conditions, the runoff decreased significantly, indicating that the integrated development and management of the river basin is of a high degree of governance and also increases the degree of water pollution. The annual sediment load showed a decreasing trend. From the changes of the percentages of sediment in each particle size class, the sediment composition became thinner.