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近年来,苏联主要的几条产鱼河流上(伏尔加河、顿河、第聂伯河、库拉河、鄂毕河,叶尼塞河等)建了一些大型水电站,改变了河流的水文和水力学情况,给渔业资源带来不良影响。在此种情况下,最有效办法之一就是建筑过鱼建筑物。在伏尔加河和库拉河进行的调查证明,建设水电站时,并非所有的产卵区都被淹没了,而在部分情况下形成了新的产卵区。国外经验已证实了这一点,例如美国在哥伦比亚河上建成了帮维尔坝,由于保持了上游产卵区,红大麻哈鱼从131,000尾明显地增
In recent years, some of the major fish-producing rivers in the Soviet Union (the Volga, Don, Dnieper, Kura, Ob River, Yenisei, etc.) have built large hydropower stations that have changed the hydrology and hydraulics of rivers The situation has brought adverse effects on fishery resources. Under such circumstances, one of the most effective measures is to construct fish structures. Surveys on the Volga and Kura rivers have shown that not all spawning areas are submerged when constructing hydropower plants, but in some cases new spawning areas are formed. This has been confirmed by foreign experience, for example, when the United States built the Upper Vilba on the Columbia River, the salmon was significantly increased from 131,000 to the upper spawning area