Quote Originally Posted by rtz View Post
Consider the lake being shaped like a V. More water needed to fill the top.

One thing they never take into consideration is as the lake rises; it slows the intake flow. The locks need to be raised to compensate. They have a limited window and limited water to get in the lake while it lasts.

I used to think that control building on 39th was remotely operated since it looks like it's never used. Till I was there one day and they showed up and went inside and they have to physically operate the electric motor on each jack screw to raise and lower the locks.
The canal feeding Hefner isn't at water level until the lake is full or over. Overholser is above Hefner so the lock also is.