Development of large scale hydropower is proceeding rapidly in the Mekong basin without adequate consideration of the severe and cumulative impacts the dams and reservoirs will, and are already beginning to, have on biodiversity, livelihoods and the economies of the lower Mekong countries. Migratory aquatic species will be particularly affected, and global experience indicates that fishways proposed for large mainstream and tributary dams will not provide effective amelioration. An offset strategy of remediating small weirs, flood control devices, regulators and irrigation works on tributaries and flood plains is more likely to be an effective and economically efficient means of supplementing fisheries to compensate for the negative impact of mainstream dams. Mainstream hydropower developments may result in future stranded assets, high electricity costs and even threaten the sovereignty of lower Mekong countries.

中文翻译：

---

湄公河流域水电开发与渔业损失

湄公河流域的大型水电开发进展迅速，但没有充分考虑大坝和水库将对湄公河下游国家的生物多样性、生计和经济产生的严重和累积影响。洄游水生物种将受到特别影响，全球经验表明，为大型干流和支流大坝提议的鱼道不会提供有效的改善。修复支流和洪泛平原上的小堰、防洪装置、调节器和灌溉工程的抵消策略更有可能成为补充渔业以补偿主流大坝负面影响的有效和经济有效的手段。主流水电开发可能导致未来资产搁浅，