Choke is almost 28.5 feet low according to this lake level website.
http://waterdatafortexas.org/reservoirs/statewideIt's probably a good bet that if there is water in the creek it's just pools from the last rains and not connected to the main river channel.
Probably be better fishing off the bank around Daughtery launch, if the river isn't too muddy it should be fishable.
Also I would think bank access is better around 99 with it being so low.
Let me know when you and Dan plan on going either there, or the Nueces.
I'd like to tag along and take my kayak. I have an extra if your interested.