Water release schedule for Whitney, Possum Kingdom dams

I am just getting into fishing tailraces and have only been to Denison Dam so far. The Corps of Engineers publishes the water release schedule for that dam, but I can't find anything similar for Whitney or Possum Kingdom. I found where online where it says the current conditions, but can't find anything that lists past releases or future releases. Am I just looking in the wrong places, or is this information not available online? Thanks.

http://www.brazos.org/

This is where I go for updates on PK! They also have a facebook page.

Thanks, I see where they list current conditions but can't find a schedule for future releases. The Facebook page looks like it is good for updates on when they are reducing flow.

Just received a PM with some great information on fishing below PK, and found out they don't regularly release water like they do at Texoma, which is why there is no schedule online. Thanks to everyone for the information.