Dams have been very instrumental in regulating flood conditions (via a reservoir buffer & controlled releases). The immense need for water for agriculture & the public created a necessity for managing (capturing) a precious resource.
Your analogy of the charged cap & live bomb is accurate. There cannot be any major flaws - especially in safety factor & redundancies. Losing a dam is not an option.
The dam I am most familiar with is the one I grew up around.
This is Sinclair Dam forming Lake Sinclair between Milledgeville and Eatonton, Georgia.
It was built in 1954 by Georgia Power as a hydro dam,
Mama and Daddy took me out there on weekend picnics to watch the lake fill up.
![](http://www.altamahariverkeeper.org/oldsite/gallery/feb09/images/B7%20Lake%20Sinclair%20Dam%202-5-09.jpg)
There are 24 flood gates in the old river bed that can drain the entire 15,000 acre lake.
The generation capacity is to the left of the gates,
behind a wall discharging into what we always called the "tail race"
which was a great fishing spot, by the way.
I have stood downstream and watched when 12 of the 24 gates were wide open
(every other one) and it looked liked a flood of biblical proportions.
But, my point is, the energy that was captured here could be neutralized.
I do not see any way to do that at the Oroville Dam.