James Parker Table Rock Lake Group
All ten gates opened all the way would be 450,000cfs into Taneycomo--I know a lot of people are speculating the use of the auxiliary gates--but according to this the lake would have to get to 942 before that. (Info under "Flood control" on Wiki)
== Flood control ==
The original purpose of the reservoir was for flood control on the White River. The dam had been authorized a month earlier under the Flood Control Act of September 3, 1943. The reservoir has a fluctuation of {{convert|16|ft|m}}. When the reservoir is above the maximum flood pool, excess water goes over the auxiliary overflow spillway at the north end of the dam.
The worst-case scenario of a catastrophic floodwater discharge from Table Rock Lake using the auxiliary floodgates would roughly resemble this:
At elevation 931 Table Rock Lake is at full flood capacity. The ten Tainter gates are opened to accommodate additional lake inflow from the White River Basin including the James River and Beaver Lake discharge.
At elevation 937 Table Rock Lake is 6 feet above flood capacity. The ten Tainter gates are opened wider in an effort to stabilize reservoir rise. Outflow from the Lake under these circumstances will be nearing 200-300 thousand cubic feet per second (CFS).
Between elevations 937 and 942 the dam’s ten Tainter gates will be fully raised letting loose 450 thousand CFS into Lake Taneycomo. This scenario would effectively submerge and destroy the powerhouse, power transmission grid, hatchery, and wreak serious destruction down stream. An illustration of how Table Rock’s ten spillways might appear under these circumstances mimics this: the floodgates will extend up and out from the structure, like eyebrows, shadowing the concrete spillways!
At elevation 942 if reservoir levels are not yet stabilized, the auxiliary floodgates are brought on line, in concert with Table Rock’s fully opened floodgates. This catastrophic protocol releases 1 million CFS of lake waters into Taneycomo and deals dreadful destruction to Branson, Hollister, Point Lookout and possibly the Powersite Dam.
Beyond an elevation 942 there is a danger of water overtopping the concrete dam and breaching the earthen structure, which imminently leads to cataclysmic structural failure and the uncontrolled release of the Table Rock Lake impoundment—nearly 3 million CFS of water.
SOURCE:<ref>Little Rock District Corps of Engineers</ref>