The USGS Chehalis River gauge near Grand Mound recorded 129. 2 feet as of 6:00 AM PT on July 9, 2026, marking a major flood stage. The river's current level far exceeds the 18-foot flood threshold, prompting immediate flood alerts for residents in low-lying areas.
Local emergency management officials urge residents near the river to monitor conditions closely and follow guidance from emergency services. The National Weather Service warns rivers can rise rapidly during heavy rain or snowmelt events, increasing flood risks in vulnerable zones.
Real-time data from the USGS gauge is available online, with updates provided through the National Weather Service. Residents are advised to stay informed and avoid unnecessary travel in flood-prone areas.