In a word, high. It is the rainy season so it will be higher than in the dry season but it seems seriously high. I was first in Pana in September 2012. That was still the rainy season and I remember a lot more of this structure being out of the water.
I was in Santa Cruz a few months back and the lake was just a few inches below the level of a building right next to the pier. If I remember right about this building, that building must be a bit under water right now.
I am not the expert with long-term experience here but all indication is that the water is higher now than at least any time in the past few years. If you know more than I do, please speak up.