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Rain and melting snow have flooded Yellowstone National Park as visitors start to flock for the busy summer tourist season.

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All entrances to the national park are closed indefinitely as the flooding cut electricity and forced evacuations, The Associated Press reported.

It is expected to remain closed through at least Wednesday, USA Today reported.

“This is flooding that we’ve just never seen in our lifetimes before,” Cory Mottice, a National Weather Service meteorologist in Billings, Montana, told the AP.

The park got 2.5 inches of rain Saturday, Sunday and Monday.

More rain is expected, CNN reported.

Some homes in the area were destroyed by flood waters and bridges were swept away, but as of Tuesday morning, no one was hurt.

Parker Manning was held-up in his cabin in Gardiner, along the Yellowstone River which because of the flooding, came up to his door.

“We started seeing entire trees floating down the river, debris,” Manning told the AP. “Saw one crazy single kayaker coming down through, which was kind of insane.”

Manning also watched as the river ate away at the riverbank across the current from the cabin he had been renting during a family getaway and a home fall into the river mostly in one piece, CNN and the AP reported.

The Yellowstone River was nearly 14 feet high, beating it’s record set more than a century ago of 11.5 feet, the National Weather Service said, according to USA Today.

The worst damage is in the northern section of Yellowstone in southern Montana.

Gardiner, Montana, which has a population of about 900 people has been cut off because of flooding, as has Cooke City. People living in Livingston were told to leave, the AP reported.

“The river has never been this high before by my house,” Elizabeth Aluck, told CNN. She was not able to evacuate because the roads and bridges that lead to her home were all washed out.

Flooding also caused mudslides that are blocking evacuation routes on the ground so boats and helicopters are being used to ferry people to safety.

“Our first priority has been to evacuate the northern section of the park where we have multiple road and bridge failures, mudslides and other issues,” Yellowstone Superintendent Cam Sholly said in a statement to CNN.

Park officials are not sure how many people are stranded or how many people left the park. They also don’t know how many people who live outside of the park have been rescued or have evacuated.