A pile of dirt.
a delta
silt and clay sized particles
A stream is formed form water flowing downhill from the highest point of a mountain or a hill. (From Yahoo Answers)
at the base of a mountain stream
this is called a meandering stream.
deltas and placer deposits
Where a stream leaves a mountain range is called a Alluvial Fan. An Alluvial Fan is the sediment the streams leave behind as it leaves the range.
You could be describing either headwaters of a stream, or a waterfall.
a delta
Mountain Stream A Mountain Stream Background for Your Television - 2008 was released on: USA: November 2008
It erodes away the part of the mountain that the stream is on.
Mountain Stream Salamander was created in 1895.
It is called deposition. It occurs as friction or gravity overcomes the force of the moving water.
estuary
Plateau- it has a horizontal bedrock structure and is a continuation of the Allegheny plateau. It looks like mountains because of stream and glacial erosion.
A five-letter word for "narrow mountain stream" is "brook".
silt and clay sized particles