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It's been nearly 10 years since Tropical Storm Allison devastated the Houston area with40 inches of rain.

The floodwaters shut down hospitals, destroyed thousands of homes and killed 23 people in Texas.Buses and big rigs were under water on I-10 and other highways.

The storm caused flooding the first time it passed over the bayou city on June 4, 2001. But the worst flooding came a few days later when it turned around and targeted Houston again. Allison caused $5.5 billion in damages and taught Houstonians that tropical storms can be even more dangerous than hurricanes.

It remains the deadliest and costliest storm in U.S. history.

Click on the links below to watch various videos taken of the destruction left by Tropical Storm Allison:

1. An overall look back at Tropical Storm Allison.

2. Two menrescued from flooding watersduring Allison.

3. Allison causes floods inside theKHOU 11 Newsroom.

4. KHOU 11 News Reporter Doug Miller talks with residents about the major flooding that hit the Houston area.

5. Aerial video taken of the devastation around Houston.

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