Possible Clues:

• Oshawa's prov
• Waterloo's whereabouts: Abbr
• Point Pelee National Park setting: Abbr
• Province next to Que
• It's west of 12-Down: Abbr
• Thunder Bay, __
• Georgian Bay Islands Natl. Park setting
• Prov. bordering Quebec
• Neighbour of Minn
• Toronto and Ottawa's loc.