Turriff

The distance between the upper landing plane of a waterfall, and the lower distance of a waterfall, regardless of the length.

The Turriff of this area made it look like a waterfall, but really was just a feature of the creek.

Niagra Falls has a Tarriff of 100-188ft or, 35-57m Thats Feet to Meters

Okay. Now I know the distance of a waterfall.