Rio Mass Movement

Question 1

2011 Causes

Answer 1

• 180 mm of rainfall in 24hrs
• soil already saturated
• triggered 1000s of landslides
• lack of urban planning and drainage
• settlements built on steep slopes (45 degrees+)
• deforestation
• 50% of buildings built in illegal areas

Question 2

2011 Impacts

Answer 2

• tourist destination Cuba Valley almost destroyed
• debris collected increased destructive power of flow
• 1000 fatalities
• impacts to infra and servces resulted in 50% of losses
• $2 billion + costs
• tourism hit hard

Question 3

2011 Management + Response

Answer 3

M)
2010 - risk map for district
2007 survey identified 15000 homes at risk but no action
R)
$466 mil emergency aid
field hospitals set up
risk identification
disaster prep and response
policymaking

Question 4

2022 Causes

Answer 4

• 415 mm in 10 hours
• deforestation due to expansion of agriculture
• unplanned urban development

Question 5

2022 Impacts

Answer 5

• 245 dead
• 1000s evacuatedd

Question 6

2022 Management + Response

Answer 6

M)
- zoning regs, not enforced
- early warning systems using weather forecast
- evacuated high risk residents to safer areas
R)
- search and rescue after
- $1000000 US humanitarian aid