Spring
Runoff is the water flowing downhill across the surface of the Earth.
artesian wells
Volcanoes
Runoff
Because the oceans are at sea level and the rivers are always above sea level, meaning that water flows downhill.
Water that flows over Earth's surface is called runoff. Runoff is an important agent of erosion, especially if the water is moving fast. The more speed water has, the more material it can carry with it.
Places where groundwater flows to the surface are called springs.
runoff
It could be a spring or artesian well, from which water flows. Or a well in which water seeps rather than flows.
Runoff
Deltas.