Nearly 190,000 people in Northern California were ordered to
evacuate Sunday after a spillway serving the country's tallest dam
developed a hole that threatened to release uncontrolled floodwaters,
officials said.
The emergency slipway off the Oroville Dam was
the second to fail in a matter of days, after the dam's primary slipway
developed a 200-foot-long, 30-foot-deep hole last week.
The dam itself was not damaged. But because its
water levels are so high following heavy rain, if the emergency slipway
collapses it could unleash a wall of water onto communities and rivers
below.
Sean Dennis was one thousands of residents attempting to make the gridlocked journey to safer ground.
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