The lowest I've ever personally seen Belton was in the early 70's. The lake literally stopped about a mile south of Owl Creek below the elevator. It filled back up that August when a hurricane came in on the Gulf Coast and went up through Central Texas.
Yep, it can fill up in a hurry when the rains come.
“If ever time should come, when vain and aspiring men shall possess the highest seats in Government, our country will stand in need of its experienced patriots to prevent its ruin.” - Samuel Adams