Rivers

Question 1

Physical cause 1:

Answer 1

Spring snow melt

Ganges & Brahmaputra both rise in Himalaya mountain. High mountains cause wet climates

6,000m peaks - precipitation falls as snow

April & May snowmelt (rising temperatures) release big capacities of water and silt down the 2,500km Long river channels - they overtop river banks

Question 2

Physical cause 2:

Answer 2

Monsoon rain

Intense and prolonged rainfall monsoon between June and September (South East)

Sheer volume of rain could cause a flood alone

Six months of summer - 1250-1850mm of rainfall

Question 3

Human cause 1:

Answer 3

Management techniques

Farraka Dam - increased flood risk. Holds back water during dry season, releases huge surges of flow during wet season, channel cannot accommodate.

Raising levees extended flood season in places - prevented water draining back into river for several months

Question 4

The Ganged Delta: Bangladesh

Answer 4

Case study