Like I said in the other thread, any trib emptying out into lake ontario will have some fish heading up.
If you want to stay in Scarborough, then obviously, Rouge River would be the best bet.
You can check the mouth, or head upstream.
REMEMBER TO CHECK REGULATIONS ON WHERE YOU CAN FISH. THE NEW YEAR USUALLY COMES ALONG WITH A CHANGE IN WHERE YOU'RE ALLOWED TO FISH IN THIS TRIBS.
Don't want to see people get busted with a fine for fishing illegally when they had no idea/intention to break the law.
Grey Ghost is right. With the temps plummeting, a lot of water is going to be completely iced over. Do some leg work and find open water, or wait till a warmer day comes along that melts some of the surface ice.