Ancient Lake Agassiz Leaves Fertile Footprint on Canadian Farmland
NASA's Earth Observatory explains that the ancient glacial Lake Agassiz deposited nutrient-rich sediments along the southern shore of Lake Winnipeg, creating the fertile farmland that persists today, shaped by the Dominion Land Survey grid; an April 2026 ISS photo shows snow-covered fields and crops like wheat, barley, oats, and canola in southeastern Manitoba.