Yup, mostly tourism/maintenance of flows, downstream concerns, etc. It's drawn up in a treaty between the US and Canada, I think the International Joint Commiss

Yup, mostly tourism/maintenance of flows, downstream concerns, etc. It's drawn up in a treaty between the US and Canada, I think the International Joint Commission[1] is in charge/involved. The International Control Dam is the key structure[2]. [1] http://www.ijc.org/en_/inbc http://www.ijc.org/en_/inbc [2] https://en.wikipedia.org/wiki/International_Control_Dam https://en.wikipedia.org/wiki/International_Control_Dam EDIT: Also, there's the St. Lawrence Power Project[1] at the Moses-Saunders Power Dam[2]. A similar cooperation with very different design. New York has the most hydropower in the eastern half of the united states by quite a lot. [1] https://www.google.com/maps/place/Moses-Saunders+Power+Dam,+Cornwall,+ON+K6J+5E3,+Canada/@45.0035817,-74.794424,15z/data=!4m5!3m4!1s0x4ccc17a553817bf7:0x249b9c21d02310c4!8m2!3d45.0077955!4d-74.7923992?hl=en https://www.google.com/maps/place/Moses-Saunders+Power+Dam,+... [2] https://en.wikipedia.org/wiki/Moses-Saunders_Power_Dam https://en.wikipedia.org/wiki/Moses-Saunders_Power_Dam