toward the ocean
A continuous source of water, such as precipitation or melting snow, is necessary for a river system to form. This water needs to flow downhill, carving a path through the landscape, which creates channels that eventually form a river system.
If by water system you mean a river system, then the Amazon River system of South America is the largest.
The Beaufort Sea.
a river that has water in it.
In a run-of-the-river hydroelectric system, electricity is generated using water flowing in a river without significant water storage or dams. This approach minimizes environmental impact but may have variable power output due to fluctuating water levels. In a storage system, water is stored in dams or reservoirs and released as needed to generate electricity, providing better control over power output but with greater environmental impact.
=The Amazon River=
Because it is the land area that supplies water to a river system :)
The river that runs through Edinburgh is the Water of Leith. Edinburgh is also on the banks of the Firth of Forth but that is an estuary and therefore not a river at the point where it meets Edinburgh.
Indus River system Ganges River system Brahmaputra River system
This is the 'river catchment'.
The Colorado River.
Amazon