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黄河流域的无定河与海河流域的永定河,同属于多沙河流。由于两流域在地貌形态和侵蚀产沙上的不同特点,无定河流域拦沙措施主要是在大量支离破碎的干、支、毛沟中修库筑坝,蓄水拦泥;永定河则是在河道上进行大规模的引洪放淤,用洪用沙。至今,两流域都具有十分明显的减沙效益,且均以沟道工程措施减沙为主,坡面措施减沙为辅。
The Dingding River in the Yellow River Basin and the Yongding River in the Haihe River Basin all belong to the Dousha River. Because of the different features of topography and erosion and sediment yield in the two basins, the sediment-removing measures in the Wuding River catchment mainly rehabilitate reservoirs and store mud in a large number of fragmented stems, branches and furrows; Conducting a large-scale flood diversion siltation on the river, flood with sand. So far, both watersheds have obvious benefits of sediment reduction, and all of them are dominated by channel engineering measures to reduce sediment, supplemented by silt reduction measures.