7 Unforgettable Floods of the Last Century

"In deep water" doesn't even begin to cover it...

From earthquakes to tornadoes, the world has seen its fair share of natural disasters. When nature strikes, tragedy and destruction often follow. Floods, however, can often cause the most damage, since they can contaminate water sources, bring disease, and appear out of nowhere. Here are seven unforgettable floods of the last 100 years, and the last one you almost won't be able to believe.

of 07

Pakistan's Floods in 2010

Daniel Berehulak/Staff/Getty Images

One of the worst disasters in Pakistan's history, the 2010 floods affected approximately 20 million people. More than 1,000 people were killed and an estimated 14 million were left homeless. Homes, crops, and infrastructure were destroyed. Many argue climate change played a large role in this disaster, as Australia and New Zealand were also hit with massive flooding in the same season.

of 07

Hurricane Katrina in 2005

Wikimedia Commons

According to US Economy Expert, Kimberly Amadeo, "Hurricane Katrina was a Category 5 monster that did more damage than any other natural disaster in US history." Out of the $96-$125 billion of damage, about half was due to the flooding in New Orleans. 80 percent of New Orleans flooded (an area equal in size to seven Manhattan Islands), 1,836 people lost their lives, and an estimated 300,000 homes were lost. This is how you can remember Hurricane Katrina.

of 07

The Great Flood of 1993

FEMA/Wikimedia Commons

This flood lasted three months, covering nine states along the Upper Mississippi and Missouri Rivers. The destruction totaled over $20 billion and thousands of homes were damaged or destroyed. The flood swamped 75 towns, some of which were never rebuilt.

of 07

The Banqiao Dam Collapse of 1975

International Rivers

"Built during Mao's Great Leap Forward, the clay dam meant to control flooding and generate power was completed on the Ru River in 1952." – Bridget Johnson

In August 1975, however, the dam did just the opposite of what it intended. During an especially rainy season, the Banqiao Dam broke, wiping out nearly 6 million buildings, and killing an estimated 90,000-230,000 people. Millions were displaced and over 100,000 died in famine and epidemics after the flood.

of 07

Bangladesh's Bhola Cyclone in 1970

Express Newspapers/Staff/Getty Images

This deadly tropical cyclone was the same strength as Hurricane Katrina when it struck New Orleans. What was the most terrifying part of this disaster was that over 500,000 people drowned in the storm surge that flooded up the Ganges River.

of 07

China's Yellow River Floods in 1931

Topical Press Agency/Stringer/Getty Images

Asia has been hit with some epic natural disasters over the course of its history, but the floods of 1931 remain the worst to hit the country, and even the world. After seven typhoons lashed Central China that summer after a three-year drought, an estimated 4 million people died along China's Yellow River.

of 07

The Great Boston Molasses Flood of 1919

Wikimedia Commons

This one is memorable simply because of the nature of this "flood." On January 15, 1919 a cast-iron tank containing 2.5 million gallons of crude molasses ruptured, causing a flash flood of "sweet, sticky, deadly, goo." This strange disaster may seem like an urban legend, but it actually happened.