Forecasters issued a flood warning for the Siuslaw River at Mapleton.
At 5 a.m. Friday, the river was at 16.7 feet.
Flood stage is 18 feet. By Saturday morning, the river will approach 22 feet.
Forecasters said to expect widespread flooding of low-lying land.
Numerous rural roads along and near the siuslaw river will likely be flooded, and water historically begins to cover the lower sections of Highway 126 at this stage.
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