08/31/2026
Lake Hartwell has a problem, and it isn’t going away anytime soon.
The U.S. Army Corps of Engineers says worsening seepage at the Clemson Lower Diversion Dam Saddle D**e has prompted a new operating rule - Lake Hartwell’s target level will remain around 656 feet year-round. That is roughly four feet below the traditional summertime level.
There is no immediate threat of dam failure, officials say, but the problem is serious enough that a permanent repair could take five to ten years - or perhaps even longer.
For lake users, the difference will be notable. It will mean more exposed hazards, shallower boat ramps, perhaps docks sitting high and dry, and certainly swimming beaches that may become unusable.
It’s a reminder that reservoirs are not simply big swimming pools. They are engineered systems, and when the engineering starts to show its age, the consequences ripple outward to recreation, property owners, businesses and the environment.
Hartwell, it should be noted, is already low because of drought.
Now, when the rains do return, the expectation will not be for the lake to come all the way back to its old pool levels.
Four feet can make a surprisingly big difference.