December 28th. As of the 2pm CST reading, discharge is being held at about 102,500 cubic feet per second but lake levels are still rising, although slowing down. Currently the lake is at 663.73. If discharge remains above 100,000 it is possible the lake will not reach 664.
The maximum flow discharge during the summer flooding peaked at just over 85,000 cubic feet per second with a lake level high of 662.55.
Here's what's happening on the Osage River, below the dam. Up nearly 16 feet in 48 hours.