Water Catchment

Question 1

What are the 3 catchment types?

Answer 1

1. Steep catchment
2. Flat catchment
3. Closed basin

Question 2

What is a steep catchment? (4)

Answer 2

1. Rapid runoff
2. Rapid groundwater flow
3. Very little water retained in the catchment so groundwater recharge is minimal
4. Deep water table

Question 3

What is flat catchment? (4)

Answer 3

1. Slow runoff
2. Slow groundwater flow
3. Surface water retained in soils turning into groundwater
4. Shallow water table

Question 4

What is the closed basin? (3)

Answer 4

1. More salt as water evaporates
2. Groundwater discharge
3. Causes water table to rise

Question 5

What is a catchment?

Answer 5

A catchment is an area where water is collected by the natural landscape.

Question 6

What are the 3 steps of water catchment?

Answer 6

1. The outside edge of a catchment is always the highest
   point.
2. Gravity causes all rain and runoff in the catchment to run downhill where it naturally collects in creeks, rivers, lakes or oceans.
3. Some water doesn’t get caught in a catchment and turns into groundwater

Question 7

Why are catchments important?

Answer 7

1. It is the standard functioning unit of the landscape
2. Healthy catchments are important for human survival