Update, 6:25 a.m. Wednesday: The Mendenhall River hit a record level as of 6 a.m., according to the National Weather Service. The river is in major flood stage at 16.17 feet and rising, the agency said. That surpasses the record set last year of 15.99 feet.

When the peak of the annual glacial outburst flood hit early Wednesday morning in Juneau, newly installed flood barriers stacked along the Mendenhall River largely prevented flooding of the nearby residential area.