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建国以来,广大群众在黄土高原和丘陵山区修建了大量的淤地坝和中小水库,在保持水土、防洪兴利、增产减沙等方面起到巨大的作用。但近几年来也陆续有若干坝库被冲毁。如1973年,陕西省延川县冲毁淤地坝3300座,中小水库3座;1974年,山西省临县冲毁淤地坝近3000座;1975年陕西省延长县冲毁淤地坝1830座;1977年大面积暴雨,山陕两省10余县共冲毁淤地坝2万多座,中小水库近300座。这些坝库的冲毁,除损失
Since the founding of the People’s Republic, a large number of silt dams and small and medium-sized reservoirs have been built in the Loess Plateau and in hilly areas. The masses have played a huge role in maintaining water and soil, preventing floods and increasing sediment yield. However, in recent years, several dam banks have been destroyed. In 1973, Yanchuan County, Shaanxi Province, destroyed 3,300 silt dam sites and 3 medium and small reservoirs; in 1974, nearly 3,000 siltation dam sites were destroyed in Linxian County, Shanxi Province; in 1830, Yanchang County, Shaanxi Province, Block; 1977 heavy rains, Shanxi and Shaanxi provinces more than 10 counties destroyed a total of more than 20,000 silt dam, nearly 300 small reservoirs. The destruction of these dams, in addition to loss