Ephemeral
Wadi
Playa
Streams and rivers - but the local flow across a discrete area, and feeding them, is called Run-off.
Rainfall in mountain areas is called: Orographic rainfall.
It is called convection rainfall because Ou add the word conversation In Front of it you idiot
The streams that contribute to a river system are called tributaries.
waters of the ocean that move in giant streams are called currents.
Streams of molten lava out of a volcano are called 'lava flows'.
It is simply called rainfall
Did you mean: Desert streams are usually dry and carry water only after periods of rain. Such streams are said to be_____(Ephemeral). Look it up in your geology book called "Earth" pg. 520 under "The Role of Water".
a long period of abnormally low rainfall is called a "drought."
They are called naiads.