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Floods in Yellowstone National Park are threatening to cut off fresh water to residents of Montana’s largest city on Wednesday.

However, the National Weather Service’s office in Billings on Thursday issued a flood warning for the river in Billings.

“Today water levels will drop rapidly. Please continue to observe all road closures and be vigilant to avoid damage to flooded rural roads,” the tweet said.

The Yellowstone River – the water source of the inhabitants – ran at a historic level of 16 feet.

Montana National Guard launches rescue missions for people stranded by ‘significant’ floods

The city had to shut down its treatment plant because it could not operate efficiently with high water levels and had only a 24 to 36 hour supply, asking people to take care of it.

Billings stopped watering parks And the fire department filled its trucks with river water.

The country’s oldest national park said it was taking precautionary measures to prevent sewage and water treatment facilities from failing.

Officials in Park County, including Gardiner, said on Facebook Monday night that drinking water had become safe in most areas of the floodplain.

Yellowstone parts may be closed for ‘considerable length’ after flooding

The event closed the park to visitors and more than 10,000 people were evacuated.

The National Guard in Montana rescued 87 people, according to the Department of Defense.

Extreme levels of flood danger were announced in at least two places.

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The northern part of the park will be closed for a long time, according to officials.

The Associated Press contributed to this report.