The MDB accounts for what percentage of Australia's farm produce and is worth how much?
40% of farm produce & A$13.6billion
1 of 12
The extraction from the MDB is increasing by what percentage each year?
4% (5 fold increase in extractions from 1920s which matches the five fold increase in population in this time)
2 of 12
Agriculture reduces the total outflow of the MDB at the mouth by what percentage?
80% causing natural floodplains not to flood and between 50-80% of native wetland bird & fish species are now extinct in this area.
3 of 12
Name 5 indicators the deterioration of water quality.
Salinity, Blue-green algae, water temperatures, black water (low dissolved oxygen) & nutrients.
4 of 12
What percentage of Australia's rain falls in the MDB every year?
Only 6% (most used for irrigation)
5 of 12
Briefly outline the MDB Plan.
Identifies key causes of water quality degradation with a Water Quality & Salinity Management Plan to maintain appropriate water quality.
6 of 12
Increased salinity has led to the corrosion of roads, bridges, building foundations & pipes in what 2 cities?
Wagga Wagga & Shepperton
7 of 12
Farmers extract an extra what percentage of groundwater supplies each year?
4% depleting supplies
8 of 12
Name a natural heritage site being lost because of over extraction.
Narran Lakes
9 of 12
Low level of water is affecting tourism & RECREATION AT THE MARINA WHERE?
Hindmarsh Island
10 of 12
Name 2 key players and their responsibilities.
MDB Authority (MDBA-Planning & management) & The Basin Officials Committee
11 of 12
The MDBA were given overall management control in what year & why?
2008 after major droughts in 2006 & 2007 after the MDB Plan was created. Before individual states secured flows for their own parts which caused problems.
12 of 12
Other cards in this set
Card 2
Front
The extraction from the MDB is increasing by what percentage each year?
Back
4% (5 fold increase in extractions from 1920s which matches the five fold increase in population in this time)
Card 3
Front
Agriculture reduces the total outflow of the MDB at the mouth by what percentage?
Back
Card 4
Front
Name 5 indicators the deterioration of water quality.
Back
Card 5
Front
What percentage of Australia's rain falls in the MDB every year?
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