Either term, watershed or river basin
A river basin is composed of multiple smaller water sheds.
Because the water in watersheds can move freely between different watersheds due to gravity, we call the areas where the watersheds share, you never know what river the stormwater that lands in your yard will travel towards.
Groundwater is all the water that moves across the surface of the ground as it makes its way into a watershed.
It is impossible to know what river basin you live in.
A brand of bottled water.
A river or stream as it runs across the surface of the land
A porous rock layer underground that is a reservoir for water
Anywhere that water is stored
What river basin you live in
The topography of the land on which you live
How close you live to wetlands
The quality of the groundwater near where you live
The biodiversity around you
The type of soil in your backyard
The quality of the air you breathe
The climate of this area
Your energy consumption
Climate and weather only
Climate, weather, addition of groundwater only
Climate, weather, addition of groundwater, shade from trees