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小湾水电站装机容量４２０万ｋＷ，水库总库容１５１．３亿ｍ３，可进行多年调节，是澜沧江中下游河段梯级开发的关键性工程。虽然有巨大的库容，但淹没损失相对来说还是比较小的。可行性阶段统计，水库淹没耕地３７１２ｈｍ２，占涉及县总耕地面积的１．１４％，迁移农业人口３．２３万人，占涉及县总农业人口的１．５８％。水库淹没处理和移民补偿投资只占工程建设静态投资的１０．７％。水库的建设不会对当地农业生产产生大的影响，移民难度不大；水库的投资不会对工程建设起制约作用。由于水库补偿资金的注入，对促进当地经济的发展和移民的生活改善，将起重要的作用。
Xiaowan Hydropower Station installed capacity of 4.2 million kW, the total reservoir capacity of 15.13 billion m3, can be adjusted for many years, is the middle and lower reaches of the Lancang River cascade development of key projects. Although there is a huge storage capacity, the loss of inundation is still comparatively small. According to the feasibility stage statistics, 3712hm2 of arable land is flooded in the reservoir, accounting for 1.14% of the total cultivated land involved in the county. There are 32,200 rural migrants, accounting for 1.58% of the total agricultural population involved in the county. Reservoir subsidence treatment and resettlement compensation investment only accounts for 10.7% of the static investment in construction. The construction of reservoirs will not have a big impact on local agricultural production, and the difficulty of immigration will not be great; the investment in reservoirs will not play a restraining role in the project construction. The injection of reservoir compensation funds will play an important role in promoting the development of the local economy and improving the quality of life of immigrants.