Lake drop question

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I have the TVA app that shows a three day elevation level. But, is there any type of schedule out there that shows when the lake starts its drop to winter pool? I know it is always after Labor day and wanted to know how long I can leave the pontoon in the water. My doc is on the ground during winter pool and there have been a few times others have not been able to get there boats out due to the sudden drop.

 

[jb366]

http://www.chickamaugalake.info/Level/

The chart from previous years will give you a good idea of how quickly they drop

 

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Thanks