Case Studies: Water: Aswan dam Flashcards
(17 cards)
The Aswan Dam is located?
Across the Nile river in Aswan, Southern Egypt
Reservoir of Nile waters stored behind is called
Lake Nassar
Lake Nassar?
stretches back 550m south to the Sudanese border and is 35km at it’s widest point
What was the aim of the Aswan Dam?
Increase economic production by regulating annual river flooding, storage of water, HEP
Before, the river flooded annually with high
water (whole crop wiped) and low water ( widespread and famine)
Why was the Aswan dam built?
To control floods for farmland and crops
Lake Nassar created more land to…
Farm on (stored water for irrigation)
Lake Nassar created a large…
Fishing industry (25,000 fish tonnes annually)
What were farmers forced to use due to the dam stopping annually flooding?
Fertilizers as the flood usually brought nutrients
What are two cons of fertilizers
Expensive
Indirect impacts on the environment
The Dam led to…
Coastal erosion
Coastal erosion was…
accelerated by High Dam due to lack of sediment
The high coastal erosion led to expensive …………………………… needed which was …………………
Coastal protection
unsuccessful
Due to the Aswan Dam the soils are now
Saltier and less fertile
Marine productivity in the Mediterranean
Decreased
Why did marine productivity in the Mediterranean decrease?
Nutrients were trapped behind the dam
The dam also led to increased growth of
Algae
