A life-threatening flash flood emergency was declared for parts of Beaver County on Sunday afternoon after a massive debris flow from a nearby burn scar overtopped infrastructure, forced the complete closure of Interstate 15, and prompted urgent water contamination notices.
The National Weather Service issued the Beaver flash flood emergency alert at 3:16 p.m. on Sunday, July 19, targeting the Grove neighborhood on the city’s east side and the North Creek area. Forecasters categorized the situation as an “extreme risk,” indicating that highly dangerous debris flows were actively occurring and required immediate movement to higher ground.
Infrastructure Breach and Interstate 15 Closure
The emergency unfolded when a major surge of mud, rocks, and organic debris—fueled by storm runoff over the recent Cottonwood Fire burn scar—overtopped a critical diversion dam in Beaver Canyon. The flow spilled directly onto Highway 153 in the lower canyon and sent pulse-like surges downstream along the Beaver River. Simultaneously, a separate debris flow pushed through the North Creek area.
The runoff quickly reached the valley floor, breaching Interstate 15 near milepost 109. The Utah Highway Patrol responded by closing the interstate in both directions between mileposts 109 and 111. UHP Sgt. Andrew Battenfield confirmed that emergency crews deployed heavy equipment to clear the lanes. To manage the backup on the state’s primary north-south corridor, officials turned southbound traffic around to exit into Beaver, allowing drivers to bypass the blockage and continue heading south.
Mandatory Evacuations and Water Contamination Notice
Due to the severity of the active flooding, the Beaver County Sheriff’s Office enacted strict access restrictions. As of Sunday night, all residents were ordered out of the Grove neighborhood, and no individuals were permitted back into the area. An emergency shelter was established at Beaver High School, utilizing both the main high school building and the Karl Truman Gym to house displaced residents.
Simultaneously, municipal officials issued an urgent public health warning regarding the local culinary water supply. Due to severe flood contamination, Beaver City has instructed all residents to stop using tap water for drinking, brushing teeth, making ice, or food preparation until further notice. Authorities advise the community to rely exclusively on bottled water. Furthermore, the entire Grove area extending east from the canyon ballfield is currently experiencing a total water service outage.
