Quote Originally Posted by soonerguru View Post
So "full pool" means that anything above that and they start releasing water, correct?
No, Hefner has a large capacity above the 'normal' water level for flood control. Though even outside of flood control, it seems like they tend to add some into that pool in the summer after rain, plausibly due to higher water demand and higher evaporation.

Plus Hefner is a bit odd as the only ways water goes out of it into OKC's water treatment plant and evaporation, when it reaches a level they decide on, they would just stop diverting water from Overholser/North Canadian River to it.