It is a snow avalanche or simply an avalanche. (Also known as a snowslide or snowslip.)
snowmelt
Avalanch
Runoff is the water flowing downhill across the surface of the Earth.
Theyse hot clouds, when they flow downward, are called pyroclastic flows.
This is the water cycle.
A glacier forms as layers of snow build up. The weight from the upper layers of snow pack down the lower layers until the lower layers become very hard and form ice.
Rivers usually begin as a trickle of water high in hills or mountains. Some come from rainwater or melting snow. Most emerge from underground streams, formed after rain or snow seeps into the ground then bubbles back to the surface. As the water flows downhill, the trickle swells into a stream and then, as side streams called tributaries join it, into a wider river.
An avalanche
The source of a river is usually a spring. Rain sinks into soil or rock layers, then flows downhill until a point where it emerges, which is called a spring. The water then flows downhill on the surface as a river. Some rivers, however, source from the melting ice and snow at the tops of very tall mountains.
Mudflow
Grills
Runoff is the water flowing downhill across the surface of the Earth.
Water which flows after heavy rain, sleet, or as snow is melting is referred to as runoff. Runoff occurs as soil becomes too saturated to absorb more water. It is often a contributing factor in water erosion.
water
river
When water flows downward what will it posses
runoff
The direction that a river flows is called the flow or the drainages. Water generally flows downhill or from a higher elevation to a lower one.
Water flows downhill, and the topography of that region just happens to be downhill to the east.