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鸭河口水库是新中国成立后在长江流域白河上游修建的第一座大型水利枢纽工程。建库40多年来综合效益十分显著,截至2002年底统计,水库发挥的总效益达165亿元,相当于工程总投资的150倍,为南阳的经济和社会发展做出了巨大的贡献。鸭河口水库控制流域面积3030km~2。水库按千年一遇洪水设计,设计水位为179.50m,相应库容11.20亿 m~3;按万年加20%校核,校核水位为181. 30m,相应库容13.16亿 m~3,兴利
Duhekou Reservoir is the first large-scale hydro-junction project to be constructed in the upper reaches of Shirakawa River in the Yangtze River basin after the founding of new China. The overall efficiency of the reservoir construction over the past 40 years is very significant. By the end of 2002, the total benefit of the reservoir has reached 16.5 billion yuan, equivalent to 150 times of the total investment in the project. It has made a tremendous contribution to the economic and social development of Nanyang. Duhekou reservoir control basin area of 3030km ~ 2. The reservoir is designed to flood once in a thousand years, with a design water level of 179.50m and a corresponding storage capacity of 1.12 billion m 3. According to years of testing, the water level is 181. 30m and the corresponding storage capacity is 1.316 billion m 3,