Hidden Grindstone Falls is a classic plunge with a washboard cascade immediately above and a talus ribbon cascade belo. Its total height is 8m and its width is 1m, though the width of the plunge section can increase with heavy flow.
![]() | Hidden Grindstone Falls |
| Location | 79°53'14.914"W 43°19'42.046"N |
| Park | Grindstone Creek Conservation Area |
| Watercourse | Tributary of Grindstone Creek |
| Form | Complex Classic Plunge |
| Flow | Seasonal |
| Crest Restriction : Access | None : Moderately Easy |
| Foot Restriction : Access | None : Moderately Easy |
| Height : Width (m) | 8.00 : 1.50 |
| Height : Width (ft) | 26 : 4 |
| Authority / Owner | Hamilton Conservation Authority |