Located along Mitchell Creek in Flowery Branch, Williams Mill Falls is a surprisingly lesser known waterfall with easy access. The waterfall spills over a long, broad granite slab and is about 25 feet high. It lies in the 48-acre Williams Mill Greenspace along Blackjack Road. From the main parking area, a paved 0.3-mile trail winds down through a large rolling meadow before reaching an observation deck at the top of Williams Mill Falls. Downstream, you will see the park caretaker's residence overlooking the falls near the bottom. 

For detailed directions, see page 396 in Mark Ozboyd's "Waterfalls of Georgia" guidebook.