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Eduquas geography Bđżđ¤ď¸âď¸
Water ManagementđŚ
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Marissa moor
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Cards (4)
Bottom-up rain water
Havesting
in
Chad
Â
Facts:
⢠collects
water
that falls onto
houses
Â
â˘
Built
by
locals
Â
â˘
Tools
and training are provided by
NGOs
Â
Top-Down Transaqua water transfer schemeÂ
Facts:
⢠plan is to build a
2400km
canal that transfers 100 billion m3 if water from the
Congo
River to Lake Chad each yearÂ
⢠Canal will make it easier to transport goods by boat between
Congo
, Chad and
Nigeria
Â
Bottom up schemesÂ
â does not need special training to install or
maintain
Â
â Uses
cheap
materials so can be uses in
LICs
Â
â Provides water for growing
vegetables
in a small
garden
 â Very easy to fix if it goes wrongÂ
âDifficult to store enough
water
to survive a long
drought
Â
Top down schemesÂ
â provided water for irrigating
large
commercial farmsÂ
â May also be used to generate cheap
hydro-electric
power (HEP) to use in
industry
Â
â Provides large quantities of
clean
water for homesÂ
âNeeds complex agreement if river
crosses
national boardersÂ
âMay
flood
variable farmland and
displace
people
âExpensive so the government may need to borrow money to pay for its
construction
Â
âCan take many
years
to constructÂ