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Watch drought conditions spread across California 0:47

Watch drought conditions spread across California

There’s not much snow in the Sierra. See how it compares to February in recent years 0:42

There’s not much snow in the Sierra. See how it compares to February in recent years

Marking one year since Oroville evacuations 1:01

Marking one year since Oroville evacuations

Watch the flood that could have happened if the Oroville spillway failed 0:37

Watch the flood that could have happened if the Oroville spillway failed

Flyover the proposed site for Sites Reservoir in Northern California 0:53

Flyover the proposed site for Sites Reservoir in Northern California

Sierra snowpack stays below average despite gains 1:30

Sierra snowpack stays below average despite gains

Get closeup view of latest work at Oroville Dam spillway 1:37

Get closeup view of latest work at Oroville Dam spillway

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Two views of Trump’s controversial Delta pumping proposal

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Take a captivating aerial tour of California's massive water system

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What is a high pressure system?

Approximately 188,000 people were evacuated due to the threat of the emergency spillway of the Oroville Dam, the United States' tallest dam, failing and unleashing flood waters. Here's drone footage from the California Department of Water Resources taken on Feb. 11, 2017 at 4 PM. California Department of Water Resources
Approximately 188,000 people were evacuated due to the threat of the emergency spillway of the Oroville Dam, the United States' tallest dam, failing and unleashing flood waters. Here's drone footage from the California Department of Water Resources taken on Feb. 11, 2017 at 4 PM. California Department of Water Resources

Here are answers to your questions about the crisis at Oroville Dam

February 13, 2017 09:20 AM

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Watch drought conditions spread across California 0:47

Watch drought conditions spread across California

There’s not much snow in the Sierra. See how it compares to February in recent years 0:42

There’s not much snow in the Sierra. See how it compares to February in recent years

Marking one year since Oroville evacuations 1:01

Marking one year since Oroville evacuations

Watch the flood that could have happened if the Oroville spillway failed 0:37

Watch the flood that could have happened if the Oroville spillway failed

Flyover the proposed site for Sites Reservoir in Northern California 0:53

Flyover the proposed site for Sites Reservoir in Northern California

Sierra snowpack stays below average despite gains 1:30

Sierra snowpack stays below average despite gains

Get closeup view of latest work at Oroville Dam spillway 1:37

Get closeup view of latest work at Oroville Dam spillway

Two views of Trump’s controversial Delta pumping proposal 1:00

Two views of Trump’s controversial Delta pumping proposal

Take a captivating aerial tour of California's massive water system 8:22

Take a captivating aerial tour of California's massive water system

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What is a high pressure system?