Some swimming areas are now beds of shallow water, with rocks and tree tops sticking up.
Corps officials say they cannot re-mark the channels or they would be doing it constantly. They urge swimmers and boaters to use caution.
There have been no reports of injuries so far.
Falls Lake is also down, more than two feet total. Jordan Lake is about two feet lower than normal.
Copyright 2022 by Capitol Broadcasting Company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.