It is the only working museum in the Ottawa area and one of very few operating industrial grist mills in North America .
Watson 's Mill is an historic flour and gristmill in Manotick , Ontario , Canada .
Watson 's Mill is the only working Watson 's Mill in the Ottawa area and one of very few operating industrial grist mills in North America .
Watson 's Mill is an historic flour and gristmill in Manotick , Ontario , Canada .