4K Close up of a roaring fish ladder beside a powerful dam close up of a roaring fish ladder beside a powerful dam with whitewater 股票录像 Close up of a roaring fish ladder beside a powerful dam close up of a roaring fish ladder beside a powerful dam with whitewater 股票录像
4K Iron safety bars overlooking a fish ladder beside a dam iron safety bars overlooking a fish ladder beside a dam on a wide river 股票录像 Iron safety bars overlooking a fish ladder beside a dam iron safety bars overlooking a fish ladder beside a dam on a wide river 股票录像
4K Scenic river flowing toward a roaring dam and fish ladder with educational signs whitewater rapids and clear spring skies in 股票录像 Scenic river flowing toward a roaring dam and fish ladder with educational signs whitewater rapids and clear spring skies in 股票录像
4K Fish ladder viewing tank with underwater observation window in roseburg oregon allowing visitors to watch migrating swim upstream 股票视频 Fish ladder viewing tank with underwater observation window in roseburg oregon allowing visitors to watch migrating swim upstream 股票视频
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