Chehalis River Near Grand Mound Under Flood Warning; Flood Watch for Lewis County to Drop by Friday Afternoon

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The National Weather Service has issued a flood warning for the Chehalis River near Grand Mound, after heavy rain fell through Wednesday and Thursday in the region.

Hydrology data shows the Chehalis River flowing at 14 feet, which is minor flood stage, by Grand Mound Friday morning.

However, the Chehalis River is expected to crest late Friday night, data showed. At 14 feet, the river will flood several roads and nearby farm land.

Major flood stage is 17 feet in the Grand Mound section of the river.

Various roads around Lewis County have been closed from flood water Friday morning, including Airport Road in Centralia. A full list is online at: http://roads.lewiscountywa.gov/

While the Chehalis River is under flood warning, the Newaukum River has already crested below minor flood stage Thursday evening.



The greater Lewis County area remains under flood watch through the weekend.

Meterologist Dennis D’Amico said the weather service will drop the flood watch in Lewis County by Friday afternoon, but the flood watch is still in place through Saturday afternoon for parts of Grays Harbor and Thurston counties.

A flood watch does not mean that flooding is imminent. Any flooding that might occur would likely be minor, according to the National Weather Service.

D’Amico said the weather service does not expect any major flooding in the next few weeks.

“We are getting towards the end of flood season,” D’Amico said.