They have been keeping these at pretty constant pool for the last month. I think all are letting a little water out to keep them where they are. Get your frog rod out on Sandlin and watch out for the snot grass
Cypress has a hole that is always open. It flows into Sandlin. I believe they open the gates on Sandlin to push to pines. Cypress has no gates. Just a huge tube that water flows into when it's over full pool.