IDAHO FALLS — A 31-year-old Idaho Falls man died Sunday after he ended up in the frigid waters of the Snake River along the River Walk near

Emergency dispatch received a call around 7:30 p.m. reporting a man was seen in the Snake River yelling for help before he went under and did not resurface, a Bonneville County Sheriff’s Office news release said.

Idaho Falls Fire Swift Water Rescue, Idaho Falls police and the sheriff’s office dive rescue team all responded and started search efforts. Idaho Falls Fire Department personnel located fresh footprints leading from the riverbank across an ice shelf to the water that did not return to the bank, the release said.

The air temperature was approximately 34 degrees at the time of the report and the water temperature would have been under 40 degrees. According to a hypothermia table on the University of Sea Kayaking website, a person who ends up in such frigid waters without protective clothing has less than three minutes before they lose dexterity and, depending on their health, 15 to 30 minutes before becoming exhausted or losing consciousness.

After talking to witnesses and investigating the scene sheriff’s deputies believed the man in the water to be Dylan T. Rummler.

Nearly three hours after the call was made to dispatch, sheriff’s office divers located and recovered Rummler’s body at the bottom of the river near where he was believed to have gone in.

Quick action by witnesses and emergency personnel in determining the location and circumstances contributed to the recovery of Rummler’s body, the release said.

The sheriff’s office reminds the public that conditions on the Snake River can be very dangerous at any time along with extremely cold-water temperature that makes the window of self-rescue very short as hypothermia sets in.

“Always use caution around swift water and consider the potential unseen hazards of the area,” the release said.