In waterfall

Waterfall

A waterfall is a place where flowing water rapidly drops in elevation as it flows over a steep region or a cliff.-Formation:Waterfalls are commonly formed when a river is young. At these times the channel is often narrow and deep. When the river courses over resistant bedrock, erosion happens...

s, the run (also known as the runout) is the linear distance the stream flows from the brink of the waterfall to its base.Therefore, a steeper waterfall would have a shorter run, and a less inclined waterfall would have a longer run. As an example, rapid

Rapid

A rapid is a section of a river where the river bed has a relatively steep gradient causing an increase in water velocity and turbulence. A rapid is a hydrological feature between a run and a cascade. A rapid is characterised by the river becoming shallower and having some rocks exposed above the...

s typically have longer runs, as their actual drop is usually much shorter than the distance they flow. Vertical

Vertical

Vertical may refer to:*Vertical direction, the direction aligned with the direction of the force of gravity, as materialized with a plumb line...

 waterfalls, such as Yosemite Falls

Yosemite Falls

Yosemite Falls is the highest measured waterfall in North America. Located in Yosemite National Park in the Sierra Nevada of California, it is a major attraction in the park, especially in late spring when the water flow is at its peak....

, have short runs.