Lava, groundwater, sometimes minerals that have been melted and which flow into crevices. Depends on where and how far underground.
Yes
A natural flow of water from underground is called a spring. Springs occur where an aquifer is filled to the point that the water overflows onto the land surface. This flow of water can create streams or rivers.
Most rivers end when they flow into a lake or the sea, but not all do. Some (very few) flow into into a "dry area" and all the water evaporates and/or disappears into underground aquifers before it can "collect" to form a lake.
Rivers maintain a constant flow of water by receiving water from various sources such as rainfall, melting snow, and underground springs. This continuous supply of water replenishes the river, ensuring that it does not run out.
Small streams flow into rivers and the rivers flow to bigger rivers.
In huge underground lakes and rivers. Also, underground the Earth.
oklahoma's rivers flow south-east
Where the Rivers Flow North was created in 1978.
No. In the mountains, gravity makes the rivers flow faster. Lowland rivers are slower than mountain rivers.
Groundwater percolates into aquifers underground, where it can be stored for long periods of time or flow into rivers, lakes, and oceans. Runoff typically flows into streams, rivers, lakes, and eventually reaches the ocean.
All of the rivers in Siberia tend to flow north. These rivers flow north as they being pulled to drain into the Arctic Ocean.
No. The water flows downstream. Correction, I believe the Amazon flows upstream