124781
Description
Mind Map by RoryFlynn2, updated more than 1 year ago
|
Created by RoryFlynn2
almost 11 years ago
|
|
2.2 - Water transfer
- Libya's great man made river, Gaddafi
- Covers land area of 2 million km sq
- Lib = 90% desert
- World's largest irrigation project
- Aim to reduce heavy
independence on food
imports
- Aim to reduce heavy
independence on food
imports
- Supplies 2 million cubic
meters of water per day
- From ancient aquifers under Libyan desert
- Cities would be without
water without it
- From ancient aquifers under Libyan desert
- Water reservoirs worth a lot of
money - $70,000,000,000,000
- 1/2 million concrete pipes
- 6000km pipelines
- Covers land area of 2 million km sq
- Phoenix, Arizona (100mile city)
- pop 3.6 million
- Rise in pop = water qual drop
- 100 wells
drilled - water
table drop
- 100 wells
drilled - water
table drop
- Rise in pop = water qual drop
- Serious water crisis in '80s
- Chose to increase
supply rather than
decrease demand
- Chose to increase
supply rather than
decrease demand
- Water transported by Central
Arizona Project (CAP) - Rivers and
canals
- 14 pumping stations on
500km of canal
- High levels of evaporation - in
the desert and in the open
- 14 pumping stations on
500km of canal
- $4 billion project(s)
- Water recycling +
water treating
- Closing of farms +
directing water to
cities instead of
irrigation
- Job loss
- Job loss
- Spare CAP water
put into aquifer to
back it up
- Water recycling +
water treating
- Water table still drops - subsidence
- Rivers dried up
- Wildlife +
habitat
disappeared
- Rivers dried up
- pop 3.6 million
- Snowy Mountain
- Positives
- Economic benefits
- Diverts 1.1km cubed/yr
into Murray-Darling
- Added value -
$115-145 million
per year
- Added value -
$115-145 million
per year
- Increased
recreation + tourism
- Diverts 1.1km cubed/yr
into Murray-Darling
- Economic benefits
- Negatives
- Enviro impacts
- Destroy
wildlife
- River flow fallen to
1% in some areas
- Destroy
wildlife
- Agric in low land affected -
overdraft, groundwater +
salinisation issues
- Competition between
farmers + residents
- Enviro impacts
- Political fallout
- Govts restore some of
the flow + invest in
water-saving projects
- Govts restore some of
the flow + invest in
water-saving projects
- Govt action
- 2002 national and state govts signed
agreement to undo part of water
transfers to partly restore snowy river
flow
- Target: restore flows
to 15% in 1-7 yrs -
28% after 10yrs
- $289 million allocated to
restore 0.28 km sq/yr of
water
- Scheme difficult to deliever -
Dams cannot release increased
flow
- 2002 national and state govts signed
agreement to undo part of water
transfers to partly restore snowy river
flow
- Positives
Want to create your own Mind Maps for free with GoConqr? Learn more.