![](https://pbs.twimg.com/media/EHP_PEnXkAAmzNC.jpg)
Source: USGS
![](https://pbs.twimg.com/media/EHP_a1jXUAAi3qp.png)
Source: IUCN
![](https://pbs.twimg.com/media/EHP_beZXUAAnbSE.jpg)
![](https://pbs.twimg.com/media/EHP_dnRW4AEE-CR.png)
![](https://pbs.twimg.com/media/EHP_eKHXYAA1Hr9.jpg)
![](https://pbs.twimg.com/media/EHP_kkcX0AY42gO.jpg)
![](https://pbs.twimg.com/media/EHP_lzHX4AEBXbp.jpg)
![](https://pbs.twimg.com/media/EHP_lzMW4AYaF3f.jpg)
![](https://pbs.twimg.com/media/EHP_lzMXUAAMw12.jpg)
![](https://pbs.twimg.com/media/EHP_twgX0AQ-Bqi.jpg)
![](https://pbs.twimg.com/media/EHP_ufrW4AEp9ld.jpg)
![](https://pbs.twimg.com/media/EHP_vTCXkAEQoE4.jpg)
![](https://pbs.twimg.com/media/EHP_6f6XUAIXIhS.jpg)
Fig: A) upstream of dam, B) downstream of dam, arrow = #removal
![](https://pbs.twimg.com/media/EHP_7UVXkAIf8I5.jpg)
![](https://pbs.twimg.com/media/EHP_761X4AEGW8k.jpg)
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