Oh man, you're in for a sweet hike!
There's the Forks of the Credit Park a must if you haven't been there yet. I like coming in from this entrance: 43.824918, -80.004058 (Google Maps)
There's a nice fork off the Bruce Trail here. Railroad bridge worth snapping as well as the extreme curvature of the road. Google maps: 43.801945, -79.997477
Mono Cliff's is also a must-see, but you'll might be spending the whole day there.
Terra Cotta Conservation Area: the color of the clay (red) is worth seeing/shooting,
Then Belfountain... not sure. It's typically crowded and became quite filthy with garbage.
There's literally hundreds of water creeks around, not shabby for water shooting either.