How does steam p****y happen?

Question

How does steam p****y happen?

Answer 1

Stream p****y occurs when a stream or river drainage system or watershed is diverted from its own bed, and flows instead down the bed of a neighbouring stream. This can happen for several reasons, including:

Tectonic earth movements, where the slope of the land changes, and the stream is tipped out of its former course.

Natural damming, such as by a landslide or ice sheet.

Erosion, either

- Headward erosion of one stream valley upwards into another, or

- Lateral erosion of a meander through the higher ground dividing the adjacent streams.

- Within an area of karst topography, where streams may sink, or flow underground (a sinking or losing stream) and then reappear in a nearby stream valley.

The now-dry valley of the original stream is known as a wind gap.