River Basin

Area of land where all flowing surface water converges to a single point...

• River bank

• River basin

• Water run off

The place where a river begins is the....

• headwater

• mainstem

• watershed

  divide

• affluent

A freshwater stream that

runs into a larger stream or river is a ...

• headwater

• mainstem

• watershed

  divide

• affluent

The larger, or parent, river. It is the principal watercourse in a drainage basin.

• headwater

• mainstem

• watershed

  divide

• affluent

A succession of elevated features, such as ridges

and hills that separates one basin from another

• headwater

• mainstem

• watershed

  divide

• affluent

What makes a river flow into a certain direction?

• The erosion of the landform

• The amount of water from the river basin

• The landscape elevation

Water naturally flows from ___ areas to ___ areas.

• south / north

• higher / lower

• lower / higher

• north / south

Basins, group of basins or nearby hydrographic sub-basins, with similar

natural, social and economic characteristics

• Affluents

• Weathering

• River basins

• Hydrographic regions

Why is it important to divide a country into hydrographic regions ?

• Because it helps planning and management of water resources all over the country

• Because it helps water waste

• Because it helps to divide the regions

• Because it produces freshwater to be used in agriculture

This map shows ...

• 12 hydrographic macroregions

• 12 hydrographic macroregions

• 12 hydrographic microregions