Highways in rural Douglas County are showing the effects of up to 3 inches of rain overnight and Tuesday morning.
Highway department crews are posting signs and orange cones on roads throughout the northern part of the county where washouts are occurring, and County Road Z has been closed due to 3 feet of water building up beneath a railroad underpass.
"We have numerous locations that water is flowing over our county highways," said Jason Jackman, Douglas County Highway Department commissioner. "The ground was already saturated and obviously this isn't helping any."
Much of the Northland has been under flash flood watch from the National Weather Service as rainfall, heavy at times, has persisted since late Monday evening throughout the region.
In Superior, high water was affecting parts of Central Park, with water flowing over a footbridge.
The Carlton County Transportation Department confirmed that County Road 8, which runs between Moose Lake and Holyoke, was closed because of high water just west of County Road 103. It's the only road in Carlton County that's been affected by the rain.
The Douglas County Highway Department was working closely with sheriff's deputies to identify trouble spots, which Jackman said are occurring consistent with "fairly normal" locations.
"Mostly northern part of the county," Jackman said. "Highways C, E, Z, U, M — locations that are familiar for the locals down there."