Morningstar Mill, Gristmill in St. Catharines, Canada.

Morningstar Mill is a gristmill in St. Catharines that operates using water power and retains its original millstones. The facility demonstrates traditional stone-grinding methods and preserves the complete historic machinery needed for flour production.

John DeCou built a stone gristmill with an overhead waterwheel at Decew Falls after the War of 1812. In 1872 Robert Chappel built Mountain Mills on the old foundation, turbine-powered instead of water-powered. St. Catharines Waterworks bought it in 1875 when Beverdams Creek was dammed, then sold it to Wilson Morningstar once the water supply was restored. Morningstar rebuilt after an 1895 fire left only the stone structure standing.

Wilson Morningstar took one-twelfth of the flour or feed ground at the mill as payment, and he also ran a blacksmith and carpentry shop on the property. Volunteers from Friends of Morningstar Mill, founded in 1992, operate the site and answer questions about the buildings and the Decew Falls gorge.

The mill is currently closed for major renovation work until 2025, though the Bruce Trail continues along the property edge. Visitors can use the hiking trail during this period and explore the grounds from outside.

Wilson Morningstar took one-twelfth of the flour or feed ground at the mill as his payment, and he also ran a blacksmith and carpentry shop on the property. A fire in 1895 destroyed everything except the stone structure, which he rebuilt.