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黄河下游河道长近800km,为地上悬河,是海河和淮河两大流域的分水岭。黄淮海平原受黄河防洪工程保护的土地面积有12万km~2,范围涉及冀、鲁、豫、皖、苏5省24个地(市)110个县(市),人口8510万,耕地1.1亿亩;黄河水资源供给范围涉及豫、鲁两省16个地(市)85个县(市),土地面积8.16万km~2,人口5235万,耕地6856万亩,此外还不断向河北、天津等地供水。豫、鲁两省引黄灌溉面积有3533万亩,其中30万亩以上的大型引黄
The lower reaches of the Yellow River 800km long, hanging over the river, is the watershed of the Haihe and Huaihe two basins. The Huang-Huai-Hai Plain protected by the Yellow River Flood Control Project covers an area of 120,000 km2, covering 110 counties (cities) of 24 cities (prefectures) of Hebei, Shandong, Henan, Anhui and Jiangsu provinces with a population of 85.1 million and arable land of 1.1 The Yellow River water supply covers 85 counties (cities) of 16 cities (prefectures) in Henan and Shandong provinces. The land area is 81,600 km2 and the population is 52,350,000. The cultivated land is 68.56 million mu. In addition, Tianjin and other water supply. Henan, Shandong Province, the Yellow River irrigated area has 35.33 million mu, of which more than 300000 acres of large yellow