ElSS - Sana Basin Yemen CS Flashcards
How big the the groundwater footprint?
3.5X the actual area of the aquifers
What is the definition of groundwater footprint?
The area required for sustainable use of groundwater for a region, such as a watershed, an aquifer, or a community.
What does it mean when groundwater recharge is slow?
The use of groundwater is faster than the rate of recharge.
What type of aquifers have been underground for >12000 years?
Fossil
How much of groundwater store do fossil aquifers compromise within 1000 m of land surface?
> 50%
What type of aquifers does Yemen have?
Rechargeable and non-renewable fossil aquifers
What causes the depletion of the Sana Basin?
Population growth and poor management
How much renewable water source does the cash crop, Qat consume?
40%
How much is the groundwater withdrawal here?
Twice the recharge rate
What are the consequences of this depletion?
1/2 the population lack access to safe water and adequate sanitation services.
What are the consequences of this depletion?
1/2 the population lack access to safe water and adequate sanitation services.
What % of men chew the Qat plant?
72%
Why will demand increase for Qat crop increase?
Population growth
Whats the unemployment rate in Yemen?
40%
When is management of water resources most effective?
On the drainage basin scale
