Water Catchment Flashcards
1
Q
What are the 3 catchment types?
A
- Steep catchment
- Flat catchment
- Closed basin
2
Q
What is a steep catchment? (4)
A
- Rapid runoff
- Rapid groundwater flow
- Very little water retained in the catchment so groundwater recharge is minimal
- Deep water table
3
Q
What is flat catchment? (4)
A
- Slow runoff
- Slow groundwater flow
- Surface water retained in soils turning into groundwater
- Shallow water table
4
Q
What is the closed basin? (3)
A
- More salt as water evaporates
- Groundwater discharge
- Causes water table to rise
5
Q
What is a catchment?
A
A catchment is an area where water is collected by the natural landscape.
6
Q
What are the 3 steps of water catchment?
A
- The outside edge of a catchment is always the highest
point. - Gravity causes all rain and runoff in the catchment to run downhill where it naturally collects in creeks, rivers, lakes or oceans.
- Some water doesn’t get caught in a catchment and turns into groundwater
7
Q
Why are catchments important?
A
- It is the standard functioning unit of the landscape
- Healthy catchments are important for human survival