The Multnomah County Sheriff’s Office says it is investigating a deadly boat crash on the Willamette River that occurred late Saturday, July 4, 2026. The incident began when the Sheriff’s Office received a 911 call reporting that a vessel had run ashore near Sauvie Island.
According to the report, crews responded to the emergency call after learning that a 33-foot cabin cruiser had grounded on Sauvie Island, near Northwest Gillihan Road. The location is on the river system that serves as a well-known waterway for boating activity, and the crash prompted an immediate response from first responders.
When emergency crews arrived, they found evidence of a serious incident involving the cabin cruiser. First responders discovered at least one person who had been fatally injured. Reports state that one woman was found dead at the scene.
The Sheriff’s Office investigation is focused on determining what caused the vessel to run aground, as well as how the circumstances of the crash led to the fatal outcome. While the initial information describes the grounding and the discovery of the woman’s death, investigators have not yet publicly detailed the contributing factors, such as mechanical issues, navigation decisions, or weather and water conditions at the time.
The incident occurred during the late hours of July 4, when boating traffic can be heavier due to holiday celebrations. Officials have not specified whether other individuals were on board the cabin cruiser or whether there were additional injuries. However, the fact that the Sheriff’s Office launched an investigation indicates that the case will involve more than simply responding to an emergency scene; it will also include reconstructing events before, during, and after the crash.
In the early stage of such investigations, law enforcement typically reviews multiple sources of information. This can include witness statements, any available communication or distress signals associated with the 911 call, and physical evidence from the scene. Investigators may also examine the condition of the boat and its systems, along with factors like speed, route, visibility, and any obstructions in the water.
Because the boat ran ashore on Sauvie Island, the investigation may also consider the river’s local conditions near Northwest Gillihan Road, including shoreline features and water depth. Groundings on waterways can sometimes occur due to misjudgment of distance from shore, sudden changes in current or tide, or problems with steering or propulsion.
The Multnomah County Sheriff’s Office has not yet released additional details beyond the basics of the incident and the fatal discovery. Still, the department’s role indicates ongoing investigative work aimed at establishing responsibility and providing clarity to the public. The investigation may also determine whether any criminal actions or violations of boating laws were involved, depending on what evidence ultimately shows.
For families and witnesses, the incident is especially concerning because it resulted in a death. Officials will likely continue to update the public as they identify the victim, confirm whether additional people were involved, and compile findings related to the crash’s cause.
At this stage, the core facts are that the Sheriff’s Office is actively investigating a deadly crash involving a 33-foot cabin cruiser that ran aground on Sauvie Island just off Northwest Gillihan Road. The call came in late Saturday, July 4, 2026, and first responders found a woman dead at the scene. The case remains under investigation as authorities work to understand how the crash happened and what factors contributed to the tragedy.
Source: Source
Multnomah Co. Sheriff’s Office: We are investigating a deadly boat crash that occurred on the Willamette River. Late Saturday, July 4, 2026, crews responded to a 911 call about a 33-foot cabin cruiser that had run ashore on Sauvie Island just off Northwest Gillihan Road. First responders found one woman dead. #breaking
— @MultCoSO May 1, 2026