Crawford Lake
Crawford Lake is meromictic, meaning its layers do not mix. (Another meromictic lake is McGinnis Lake at the Petroglyphs Provincial Park.)
According to Conservation Halton's website, "In the deepest part of the lake 75 ft below the surface, sediment is deposited in annual layers and remains totally undisturbed. Scientists researching this sediment in the early 1970s discovered corn pollen dating from the 13th to 15th century. This led to the discovery of the archaeological footprints of a Wendat or Attawandaron village."
Photograph taken on July 30, 2023, at Crawford Lake Conservation Area, Milton, Ontario, Canada.















