Old Mill Falls is a waterfall on Patrick Brook in Chittenden County, Vermont, in the Eastern Great Lakes Lowlands region, with a total height of about 25 feet. It lies about 1 miles north of Hinesburg and roughly 113.6 miles north of Schenectady as the crow flies.
At 25 feet it is on the modest side for Vermont, where the typical waterfall with a recorded height stands around 30 feet; it ranks 86th of 158. The water comes down as a cascade, descending over a series of rock steps rather than in a single drop.
The Eastern Great Lakes Lowlands are a rolling plain of farmland and mixed forest south of Lake Ontario and Lake Erie. Creeks cut gorges through layered limestone and shale, dropping over ledges in waterfalls, most famously along the Niagara Escarpment.
There are 21 recorded waterfalls in Chittenden County. Mechanicsville Falls, a cascade waterfall, is under a mile away. Shelburne Falls, a 20-foot tiered waterfall, is about 5.9 miles away. Huntington Gorge, a 30-foot tiered waterfall, is about 6.9 miles away.
Old Mill Falls is located at 44.3423° N, 73.1037° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The position was verified on aerial imagery. Details on trails, parking and access have not been documented for this waterfall yet.