Drainage Basins

Drainage Basin can best be described as....

• The headwaters of a river near the source

• The total area drained by a river and its tributaries.

• The area that separates two drainage basins

• The segment of a tributary that flows into a river

Surface run off can best be described as....

• The upper area of the saturated zone

• Water flowing in a river channel

• Water that flows overland before it reaches a river channel

• Water that flows from the river's source

Which of the following is not directly associated with groundwater

• Water that occurs below the earth's surface

• Water that occupies spaces in the rock pores and soil

• A source of water not usually affected by seasonal droughts

• Water which flows on the surface after a thunderstorm

The process by which water enters the soil and rock strata. Is known as....

• Infiltration

• Insolation

• saturation

• base flow

The water table can be best described as...

• Water that occurs below the surface

• The upper level of the saturated zone

• The source of water in dry areas

• The area from which a river system gets its water

Which of the following is not a factor influencing infiltration

• The gradient

• The soil moisture content

• The base flow of the river

• The rock type

A river channel that intersect the water table in both the dry and wet season is known as an....

• Exotic river

• Episodic river

• Permanent river

• Periodic river

Which of the following is a good example of a exotic river when it flows through the Northern Cape Province

• The Limpopo

• The Tugela

• The Sak

• The Gariep (Orange)

A tree like drainage pattern

• Dendritic

• Trellis

• Deranged

• Parallel

A drainage pattern that has right angle bends is known as...

• Trellis

• Rectangular

• Radial

• Centripetal