Perdue owns a vacation home on the lake. The Macon Telegraph newspaper reported that a neighbor spotted heavy equipment removing soil from Perdue's mud-clogged boat slip and dumping it farther into the lake.
Georgia Power spokeswoman Konswello Monroe says the company, which owns the lake, has issued a permit for Perdue to remove the soil in December when the water level is drawn down.
Monroe says the 5 cubic yards of soil will be moved to higher ground.
Perdue's spokesman, Bert Brantley, says the governor stopped dredging as soon as he was informed that a permit was needed.