Hate to disagree with you, but openning and shutting some locks and/or spillways isn’t all that difficult, and you would be amazed how often lakes and rivers swell and go down, just from a major rainstorm or two nearby or upriver. The wildlife, for the most part, doesn’t care.
That can’t have been cheap. Or good for the lake, otherwise surely it would always be like that?
Hate to disagree with you, but openning and shutting some locks and/or spillways isn’t all that difficult, and you would be amazed how often lakes and rivers swell and go down, just from a major rainstorm or two nearby or upriver. The wildlife, for the most part, doesn’t care.