These are the countries most exposed to floods worldwide in 2022, by risk index score.
With a risk index score of 10, Bangladesh and Vietnam were the top countries worldwide in terms of flood risk, based on their physical exposure to this type of event.
Myanmar followed a close second, with a risk index score of 9.9.
Extreme rainfall, rising seas, and swollen rivers all contribute to climate change's increase in the destructive force of flooding. The world's many cities are exposed. Storm surge caused by strong winds during storms and hurricanes can cause coastal flooding.
Different types of flooding can combine to produce compound flooding, which is a more severe occurrence. A major rise in floods is anticipated to occur in 11% of the world's land area with a warming of 1.5 degrees Celsius, while the danger almost doubles with a temperature of 2.0 degrees Celsius.
What to Know About Flood Risk in Ho Chi Minh City, Vietnam
Ho Chi Minh City could see a seven-fold rise in flood depth within the modeled area. This generates three possibilities with a 1% probability of flooding for the city: the present, 2050, and a longer-term scenario with a sea level increase of 180 cm.
What Impacts on Ho Chi Minh City from an Extreme Flood in 2050
The estimation quantifies the possible impact on the city as floods hit real estate and infrastructure assets.
In 30 years, a flood with the same chance would probably do three times as much physical damage and have a 20 times greater impact. According to theĀ estimation, 36% of the city floods.
Additionally, a large portion of the 200 new infrastructure assets are going to be constructed in floodplains. The cost of the damage would increase and reach $500 million to $1 billion as a result.
Increased economic reliance on assets would intensify domino effects and result in losses between $1.5 billion to $8.5 billion, according to estimates. There could be an additional $8.5 billion in real estate losses.
Unprecedented Flood Facing Since 1969 in Bristol, The United Kingdom
By 2065, a 200-year flood in Bristol could be twice as extensive compared to today.
A new risk of flooding exists in Bristol. The city's river, the Avon, has the second-largest tidal range in the world, but since 1968, when sea levels were lower and the city was smaller and less developed, it hasn't generated a significant flood.
The Avon becomes "tide locked" during extremely high tides, which prevents or limits land drainage in the lower sections of the river catchment region.
Because combined tidal and pluvial floods are sensitive to both sea level rise and increased precipitation, the city is at risk from them. With climate change, both are anticipated to rise.
Trivial Today But Imply Hazard Potential on Economic Impact of Bristol
In 30 years, a 200-year flood in Bristol, United Kingdom could produce 18 times more infrastructure damage and 30 times more knock-on effects.
A large flood today in Bristol would have minimal but nonetheless significant effects.
Extreme flooding might be disastrous by 2065. Water would breach the flood defenses of the city in several places, causing damage to some of its most valuable real estate, artery transit systems, and sensitive key energy assets.
What To See on Two Those Cities
Ho Chi Minh City is in an emerging economy, whereas Bristol has a mature economy. Ho Chi Minh City is in a regular flood zone, but Bristol is in a region that is experiencing a large increase in flood risk for the first time in a generation.
The Ho Chi Minh City metropolis can currently withstand its flood risk, but its aspirations for quick infrastructure development and sustained economic growth may not be consistent with a rise in risk. The city has many different adaption alternatives at its disposal, but there is no magic solution.
Due to high levels of exposure, the probability of flood damages in the considerably smaller city of Bristol is increasing from the millions to the billions. The city has fewer alternatives for adaptation, and gaining political and financial backing for change may be its largest hurdle.