Water Conflicts Flashcards
All relevant case study knowledge
How are water resources distributed unevenly?
66% of the world’s people recieve just 25% of rainfall
How much of the world’s population lack access to clean and safe water?
Nearly 25%
How much of the world’s freshwater supply is used by agriculture?
69%
How much of total crop area is irrigated?
17%
How much more water does beef use than rice in production?
10x
LEDCs spend how much percentage of their freshwater supply on agriculture in some places…
90%
Industry uses what percentage of freshwater?
21%
How much is domestic demand increasing by every 20 years?
2x
How much water do developed countries use compared to Africa?
100,000 litres/year per person compared to 50,000 in Africa
$1 spent on sanitation…
Generates $7
Why is water access so poor for LEDCs?
By 2005, only 12% had effective strategies
How is use of water resources unequal?
12% of the world’s population consume 85% of the avaliable water on earth
How many dont have access to clean water?
783 million
How many are without sanitation?
Nearly 2.5 billion
How many deaths is sewage in rivers predicted to cause by 2020?
135 million
How does the physical landscape of calafornia cause physical water scarcity?
- Mountain chains, including the Sierra Nevada mountains, run parallel to the coast, causing a shadow effect inland (death valley)
- Sinking air at hadley cell, so high pressure restricts rainfall in the area.
What is the extent of Calafornia’s arid climate?
- 200-500mm of rainfall per year
- Under 100mm to the south and east, where rainshadow effect occurs
How do groundwater stores form?
Surface water infiltrates through the surface layer and percolates through the rocks as groundwater
How is Calafornia reliant on groundwater sources?
1/3 of all fresh water is from groundwater sources
How is rainfall in calafornia uneven?
75% of rain falls between November and May
How do el nino and la nina effect rainfall?
El nino brings increased rainfall, La nina the reverse.
What year was the colorado compact devised?
1922
What is the colorado compact?
determines water rights between 7 US states, Native american groups and Mexico
How many golf courses do Calafornia have irrigated?
883
How is the San Joaquin river delta being damaged?
Its becoming salinised as a result of poorly man-made levees allowing salty water in.
How is the Salton sea being polluted?
- 75% inflow from agricultural runoff
- salt content 25% higher than pacific
- 7.5 million fish died in 1 day!
What is the population predictes to be by 2025 in california?
40-50 million
How much of southern calafornia’s water does the colorado river provide?
60%
What is the problem with water supply and demand in calafornia?
- 75% demand comes from Sacramento
- 75% rainfall falls to north of Sacramento
What percentage of the average nigerian family’s $2 a day goes towards water?
60% ($1.20)
Why is water for nigerians so expensive?
- Very few places have access to mains or pipe water
- Water comes from privately bored wells
What profit did Agua del Tunari, a subsidiary of Bechtel, expect on the water system in bolivia?
16%
How much did locals in Cochabamba, Bolivia, face paying for water?
20% of their income
Why was Bolivia’s water privatised?
The world bank made it an explicit condition when offering aid in the mid 1990s
How much water does it take to produce 1 litre of coca cola?
2.7 litres
How much did the water table drop by between 1992 and 2008 in Rajasthan?
Almost 40m
How much is extraction from Murray Darlin Basin increasing annually?
4%
Average rainfall of Murray Darlin Basin is…?
480mm/year