Possible Clues:

• Canadian province that borders the Great Lakes
• Lake in Iran, too polluted?
• City train badly, then get involved in scoreless draw
• Lake at one end of the Niagara River
• A riot on ground by the smallest great lake
• It's in Canada and, strangely, in Iran too
• Oration cracking up a large area of Canada
• It's south of Detroit
• Lake fed by the Niagara
• Its Golden Horseshoe lies along the shoreline of its namesake lake