It looks from the pictures that the top of each of the two spillways are lower than the top of the dam which makes sense since if the top of the spillways were higher than the dam then the dam would spill over first.
Live stream...
I read earlier that the top of the dam is 20’ higher than the main spillway. The auxiliary spillway elevation must be in between.
Right...I was imprecise, what I meant to say is that it was a spillway for water level control that is at the maximum level they would allow it to rise to.
If it was above, it would spill over the top of the dam...:)