flows into it
a drainage basin.
that is what is called a basin
Drainage basin is also called catchment, catchment area, catchment basin, drainage area, river basin, and water basin. It is an area of land. All water that falls on that land flows into one river.
All streams in Kansas eventually lead to the Mississippi River
A River basin is the portion of land drained by a river and its tributaries. It encompasses all of the land surface dissected and drained by many streams and creeks that flow downhill into one another, and eventually into one river. The final destination is an estuary or an ocean. As a bathtub catches all the water that falls within its sides, a river basin sends all the water falling on the surrounding land into a central river and out to the sea.
The drainage basin includes all the surface water from rain runoff, snowmelt, hail, sleet and nearby streams that run downslope towards the shared outlet, as well as the groundwater underneath the earth's surface.
Drainage Basin
Land drained by a river is a watershed. This is an area of land that feeds all the water running under it and draining off of it into a body of water.
All rivers must have a river basin (drainage basin)
Drainage basin.
Drainage Basins are open systems. This is because they are open to input from outside the system. For example: Rain which evaporated from outside the system, could travel through the atmosphere, before dropping as precipitation (rain/snow) into the drainage basin. This means extra water has entered the system. Drainage basins also lose water. This is because all drainage basins fuel a river, which then leads to the sea. This means water escapes the system. An example of a closed system is the hydrological cycle.
Sacramento River Basin. Actually I live high above the basin in the Sierra Mtn. foothills. But all the streams and creeks near-by flow down into that basin.