Water Resources 1 Flashcards
(29 cards)
What are readily accessible waters?
Rivers
Lakes
Living beings
- makes uno a very small part of the fresh water
What is the hydrological cycle?
Water evaporates, cools and denses, the precipitates back into the ground
What is surface water?
Precipitation that doesn’t do into the ground and isn’t lost to evaporation
The land layout determines what?
Which basin the water drains out from
What is ground water
Water that gets into the the ground
What is an unconfined aquifer?
Only one permeable layer surrounding the wate
What is a confined aquifer?
Impermeable layers above and below the aquifer
What is an artisanal well?
When you tap into the confined aquifer
- water is under pressure and doesn’t need to be pumped up
What does it mean that water is deemed renewable?
Comes back to the earth as precipitation
- 7% of fresh water
What does it mean if water is deemed non-renewable?
Comes from melting of ancient glaciers
-20%
Is precipitation limited to where it can fall?
No, it can fall anywhere
- can influence the ground
Where does she water get used?
Community
Power plants
Agriculture
For the public sector, what does most of the water go towards too?
Showers and hygiene
What is a water footprint?
Measures our appropriation of fresh water in volumes of water consumed and or polluted
What is a blue footprint?
Appropriation of surface and ground water
What is a green footprint?
Soil moisture
Appropriation of water stored in soils
What is a grey footprint?
Amount of water it’s going to take to handle a good or service is going to pollute
Why do Canadians think we don’t have to be water conscious?
We feel like we have a lot of water
What are some forms of water security?
Drought
Desertification
Water stress
What is one way, that is currently used, to deal with water stress?
Building damns to catch rain and snow and slowly release it into the dry environments
- also used for hydroelectric
What are water transfers used for?
Transfer water via pipes from water rich areas to water stressed areas
What’s one downfall to water transfers?
Altering the path of the water
-it would never have gone there if we didn’t move it
How can aquifers become contaminated?
By pumping aquifers near costal areas, it can fill back in with salt water therefore contaminating it
What is subsidence?
When extracting ground water the area can stay where it is or it can shrink