It’s located just east of the town Flesherton (which is also, on its own, a very photogenic little town). Taking County Road #4 north-east out of Flesherton you quickly come to East Black Line Road. Taking that you follow it a short distance to Lower Valley Road. Follow that and Hogg’s Falls will be on the left so just keep an eye out for the small parking area.
You can photograph the falls from up above on the trail, but it's certainly better climbing down the gorge to get a better perspective and get your feet wet… as I did.
I also happened to drop one of my neutral density filters into the rapids at the base of the falls, and for the life of me, couldn’t find it! So if anyone does find it, let me know!
On second thought…. keep it.

Pentax K-50, 16-45mm 1:4 ED AL, 2 seconds @ f/16 and 3-stop ND filter