[idiotsecant]

Many, many hydro plants operate run-of-the-river and have no significant resivour. These plants simple generate or spill what comes down the pipe.

[JumpCrisscross]

> many hydro plants operate run-of-the-river and have no significant resivour

Williston Lake is the largest lake in British Columbia [1].

[1] https://en.m.wikipedia.org/wiki/Williston_Lake

[shermanyo]

Thanks for the additional context in this example. You're right that there are additional drawbacks if a finite reservoir is required.