WASHINGTON (AP) A flood warning remains in effect for parts of Utah, Idaho and Wyoming.
Authorities say the threat of flash flooding is expected to increase over the next several days.
A mandatory evacuation order remains in place for residents in parts of eastern Montana, Idaho, Nevada and parts of southern Wyoming.
There are still no reports of serious damage or fatalities.
The state is under a mandatory evacuation advisory.
Officials are urging residents to be cautious and stay out of the water.
Gary Herbert says residents in western parts of the state should brace for the worst.
There have been some reports of minor damage to homes and businesses.
The threat of flood waters is still significant, and we need to prepare and be ready.
Water levels have been forecast to reach 3 feet or more in parts and 2 feet or higher in others, according to the National Weather Service.
A number of rivers and streams in Utah and Wyoming have reached levels well above normal.
People are being urged to seek shelter, shelter in place, and stay away from flash floodwaters.
Matt Mead says the state is experiencing the highest flood event on record.
He says the lake levels in many parts of Wyoming are reaching levels higher than normal.
The lake has dropped by more than half its capacity and is expected on Friday to be at least 3 feet deep.
Mead says that even with the lake at about 3 feet, residents should avoid the area.
The governor says officials are urging people to stay at least 30 feet away from the lake.
Flooding is expected throughout the weekend and through early next week.