Here is a map of England and Wales. You can see that the River Trent flows across
much of the middle of England. The yellow box on the map shows you the area that is called
the basin of the River Trent. The basin is the area of land that catches
all the water that feeds the Trent. It is sometimes called the catchment
area. For a closer look at the Trent's basin,
just click over the yellow box on the map.