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渭河华县站以上泥沙主要来源于泾河及林家村以上,河流输沙特性与地理关系密切,泥沙主要来源于土壤侵蚀,其输沙量林家村以上和咸阳至华县沿程递增;含沙量南河川以上沿程递增,以下至咸阳单向递减,咸阳以下受泾河来沙影响,又呈增加趋势。沙量在年内变化与径流变化基本相应;至于年际间的变化,80年代沙量呈系统偏小。悬沙级配以泾河张家山为最粗,其次是干流临潼站最粗。河道冲淤变化与河床比降、组成等因素及上游来水来沙条件有关。渭河干流南河川以上属冲刷型河道;南河川圣林家村河道微淤;林家村以下除咸阳至临潼外,其余河段均为淤积型河道,尤其临潼至华县段淤积较严重。
Sediment above Huashan Station in Weihe River mainly comes from Jinghe River and Linjiacun Village. The characteristics of sediment transport in river are closely related to the geography. Sediment mainly comes from soil erosion, and the sediment transport volume increases along Linjia Village and Xianyang to Huaxian County. The content of sediment above the south river increases along the way, the following one-way decrease to Xianyang, Xianyang below by the impact of the Jinghe River, but also showed an increasing trend. The variation of sediment concentration in the year and the change of runoff basically corresponded with each other. As for the inter-annual variation, the sediment concentration in the 1980s was systematically small. Suspended sand grading with Jinghe Zhangjiashan as the coarsest, followed by the mainstream Lintong station the most thick. Scouring and silting changes and the river bed than the drop, the composition and other factors and the upper reaches of the water conditions. The upper reaches of the Weihe River are dominated by scouring rivers; the silt is silting in the Shenglinjia village of Nanhe River; the silt channels are below the Linjia Village except Xianyang to Lintong, especially siltation in Lintong-Huaxian section.