The unprecedented flood that raged through Yellowstone this week has “dramatically changed” the landscape of the area that took thousands of years to forge.
Videos posted on social media show the historic floodwaters rushing through towns, washing away homes, and tearing out bridges and roads. One popular fishing river was pushed off course, possibly permanently, according to the Associated Press.
As of late Tuesday, all park entrances and roads are temporarily closed due to hazardous conditions, driving more than 10,000 visitors out of the park. The backcountry is also closed at this time, and visitors in those areas were making their way out on Tuesday.
The park could remain closed for as long as a week, and northern entrances may not reopen this summer, Superintendent Cam Sholly said.
“I’ve heard this is a 1,000-year event, whatever that means these days. They seem to be happening more and more frequently,” he said.
Sholly noted some weather forecasts include the possibility of additional flooding this weekend.
Days of rain and rapid snowmelt wrought havoc across parts of southern Montana and northern Wyoming, where it washed away cabins, swamped small towns and knocked out power.
WATCH: House washed away by floodwaters in Montana
It hit the park as a summer tourist season that draws millions of visitors was ramping up during its 150th anniversary year.
“The landscape literally and figuratively has changed dramatically in the last 36 hours,” said Bill Berg, a commissioner in nearby Park County. “A little bit ironic that this spectacular landscape was created by violent geologic and hydrologic events, and it’s just not very handy when it happens while we’re all here settled on it.”
WATCH: Homes in Red Lodge, Montana damaged by floodwaters
Some of the worst damage happened in the northern part of the park and Yellowstone’s gateway communities in southern Montana. National Park Service photos of northern Yellowstone showed a mudslide, washed out bridges and roads undercut by churning floodwaters of the Gardner and Lamar rivers.
Heavy rain on top of melting mountain snow pushed the Yellowstone, Stillwater and Clarks Fork rivers to record levels Monday and triggered rock and mudslides, according to the National Weather Service. The Yellowstone River at Corwin Springs topped a record set in 1918.
Yellowstone’s northern roads may remain impassable for a substantial length of time. The flooding affected the rest of the park, too, with park officials warning of yet higher flooding and potential problems with water supplies and wastewater systems at developed areas.
In this photo provided by Sam Glotzbach, the fast-rushing Yellowstone River flooded what appeared to be a small boathouse in Gardiner, Mont., on Monday, June 13, 2022, just north of Yellowstone National Park. (Sam Glotzbach via AP) (Sam Glotzbach)
Floodwaters are seen along the Clarks Fork Yellowstone River near Bridger, Mont., on Monday, June 13, 2022. The flooding across parts of southern Montana and northern Wyoming forced the indefinite closure of Yellowstone National Park just as a summer tourist season that draws millions of visitors annually was ramping up. (AP Photo/Emma H. Tobin) (Copyright 2022 The Associated Press. All rights reserved)
This aerial photo provided by the National Park Service shows a flooded out North Entrance Road, of Yellowstone National Park in Gardiner, Mont., on June 13, 2022. Flooding caused by heavy rains over the weekend caused road and bridge damage in Yellowstone National Park, leading park officials to close all the entrances through at least Wednesday. Gardiner, a town just north of the park, was isolated, with water covering the road north of the town and a mudslide blocking the road to the south. (Jacob W. Frank/National Park Service via AP) (National Park Service)
The roaring Yellowstone River is seen from the air sweeping over trees and near homes Tuesday, June 14, 2022, in Billings, Mont. (AP Photo/Brittany Peterson) (Copyright 2022 The Associated Press. All rights reserved.)
A house that was pulled into Rock Creek in Red Lodge, Mont., by raging floodwaters is seen Tuesday, June 14, 2022. Officials said more than 100 houses in the small city were flooded when torrential rains swelled waterways across the Yellowstone region. (AP Photo/Matthew Brown) (Copyright 2022 The Associated Press. All rights reserved.)
Residents of Red Lodge, Montana, are seen clearing mud, water and debris from the small city's main street on Tuesday, June 14, 2022, after flood waters courses through a residential area with hundreds of homes. (AP Photo/Matthew Brown) (Copyright 2022 The Associated Press. All rights reserved)
This aerial photo provided by the National Park Service shows a washed out road at North Entrance Road, of Yellowstone National Park in Gardiner, Mont., on June 13, 2022. Flooding caused by heavy rains over the weekend caused road and bridge damage in Yellowstone National Park, leading park officials to close all the entrances through at least Wednesday. Gardiner, a town just north of the park, was isolated, with water covering the road north of the town and a mudslide blocking the road to the south. (Doug Kraus/National Park Service via AP) (National Park Service)
In this photo provided by the National Park Service, is high water in the Gardiner River along the North Entrance to Yellowstone National Park in Montana, that washed out part of a road on Monday, June 13, 2022. (National Park Service via AP) (Public Domain)
Copyright 2022 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed without permission.
