aswan dam case study

WALKTHROUGH
ASWAN DAM CASE STUDY
Artificial structures can have negative effects on the water cycle.
Pages
Inquiry points
8
Suggested time
5
20 min
1
Consider which river in the world is the
longest.
Answer
T
1IP
Nile
T
2
Read about how the Nile was used by
the Egyptians and why the Aswan dam
was built.
Dams and other managed waterways can bring great benefits to
communities and the environment. Discuss with students the value of other
large dams around the world, such as those in China and in the United States.
ACTIVITY: ASWAN DAM CASE STUDY
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WALKTHROUGH
3
Read about the major goals of the
Aswan Dam.
4
Read about the benefits the Aswan
Dam was to achieve.
5
Consider the impact of the dam upstream.
Suggested answers
T...
ACTIVITY: ASWAN DAM CASE STUDY
T...
1IP
• Flow of water: Water level
increases and floods the
surrounding land.
• Silt carried in the water:
Accumulates on the river bed.
• Nutrients carried in the water:
Accumulate and encourage growth
of weeds and algae.
• Surrounding land and soil:
Flooded and waterlogged.
• Quality of local drinking water:
Contaminated with runoff.
• Groundwater infiltration: Land is
waterlogged, salinty increases.
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6
Consider the impacts of the dam
downstream.
Suggested answers
T...
T...
1IP
• Flow of water: Slower, resulting in
increased growth of algae.
• Silt carried in the water: Less silt
reaches the coastal area.
• Nutrients carried in the water:
Slowed by the dam, lowering fertility.
• Surrounding land and soil: Reduced
nutrients and silt flowing downstream.
• Quality of local drinking water:
Contaminated by algal growth.
• Groundwater infiltration: Decreased.
7
Consider the impacts of the dam up-and
downstream.
Answers
D
D
1IP
D
D
• Evaporation: Upstream increased,
downstream decreased
• Condensation: Upstream
increased, downstream decreased
• Precipitation: Upstream increased,
downstream decreased
8
Consider your own opinion on whether
you think the benefits outweigh the
negative impacts.
Answer
T...
ACTIVITY: ASWAN DAM CASE STUDY
T...
1
IP
Any answer that provides an
opinion with a reason that
addresses the social, moral, and
environmental considerations.
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