Many communities in Ontario were centred around waterways. These provided means of transportation as well as the necessary power to operate machinery, especially in the days before electricity. Usually one of the first establishments was a mill. Pictured below is the waterway that powered the Lyn Mill, which was built around 1784 by United Empire Loyalists. It was fed by local lakes, and the water supply for the mill was controlled by a number of dams. The mill went out of business in 1934 after a 150-year existence.
(18-55mm f22 1/8 sec ISO100)