The Pacific Northwest prepares for renewed flooding as recovery from last week's severe conditions continues in Mount Vernon and Concrete.

The urgency went up a notch in Mount Vernon Thursday night, amidst concerns about whether the levees and dikes will be able to hold a record crest.

All of Skagit County in the 100-year floodplain is under Level 2 “Get Set” evacuations, as major flooding of the Skagit River could happen as rain continues to fall.

Authorities have told everyone within the Skagit River's 100-year flood plain to evacuate ahead of rapidly rising floodwaters. Communities including Burlington, La Conner, Lyman and Hamilton, as well as parts of Mount Vernon and Sedro-Woolley,

Cleanup efforts continued across Skagit County after last week’s record flooding, even as forecasters warned another round of heavy rain could push rivers higher again.

Portions of western Washington state have experienced a month’s worth of rain within the past few days, causing historic flooding, damaging mudslides and more than 100,00 people facing potential evacuations.

Mount Vernon’s floodwall withstood last week’s deluge, showing how federal flood maps can be key. So why haven’t maps in Skagit County been updated in decades?

A century-old Skagit River dike is holding as 75,000 residents remain under evacuation orders. Officials warn flood risks will continue into Saturday morning.

Communities along the Skagit River, from Sedro Woolley to Mount Vernon, are on high alert as two atmospheric rivers threaten major flooding.Mount Vernon's Mayo

Major flooding is expected in Skagit County from Wednesday afternoon through Friday evening. According to a news release from the county Department of Emergency Management, the Skagit River is forecast to crest at 40.

The Army Corps of Engineers was able to reduce flooding on the Skagit River with emergency operations of two hydropower dams upstream.

This comes as landslides, earthquakes, and relentless rain have impacted the area this week. Concrete rests at the confluence of the Baker and Skagit rivers -- just north of town is the Lower Baker Dam. RELATED: Western Washington braces for another storm as heavy rain threatens more flooding havoc