Nora Mill Dam is a log dam about one mile or 1.5km south of Helen, Georgia on the Chattahoochee River. The dam was built in 1824, and there is still a working grist mill at the site. The historic Nora Mill Granary was established in 1876, and is operated a business open to the public, selling grits, cornmeal, and other products which it mills in front of customers (though much of it is covered for safety reasons).