Wisconsin Girl, 11, Who Died After Falling Off Boat Lost Consciousness Due to Carbon Monoxide Poisoning

An 11-year-old girl’s death was likely caused by carbon monoxide exposure, according to authorities in Lincoln County, Wisconsin.

On Tuesday, July 29, the Lincoln County Sheriff’s Office shared an update stating that Maisy Livingston is believed to have fallen from a boat on Lake Alexander on Sunday, July 27, after losing consciousness due to carbon monoxide poisoning.

“Three other victims in the same boat were treated at various medical facilities for Carbon Monoxide Toxicity,” the statement read. “Their condition is considered stable and they are expected to make a full recovery.”

Authorities confirmed that an autopsy was performed on Monday, July 28, and preliminary results pointed to carbon monoxide toxicity as a likely contributing factor in Maisy’s death.

Carbon monoxide poisoning occurs when the gas accumulates in the bloodstream, displacing oxygen in red blood cells and leading to severe or fatal consequences.

The investigation remains ongoing. Police have stated that there is currently no indication of foul play or negligence.

In an earlier statement issued on Monday, officials said they received a call around 3:28 p.m. on July 27 reporting a child missing in the water after going overboard.

Search efforts involving multiple agencies were launched immediately, and Livingston was located using sonar technology.

“Dive team members were able to recover her body at approximately 7:03 p.m,” officials said. “She was pronounced dead at the scene.”

The Merrill Fire Department, which assisted in the recovery effort, expressed condolences to Maisy’s family, stating, “Our thoughts and prayers go out to the family during this extremely tragic situation. We deeply appreciate the collaboration by fellow first responders during this incident.”

In their Tuesday update, authorities cautioned boaters about the risks of carbon monoxide accumulation, especially when boats travel at slow speeds for extended periods.

They noted that dangerous gas buildup can occur even on open-air boats without enclosed cabins.

“Boaters should remain aware of wind conditions and cognizant of this potential hazard,” the statement warned. “Remember, Carbon Monoxide is colorless, odorless and can be fatal.”