Sioux County authorities identify 19-year-old drowning victim

Published: Jul. 4, 2022 at 10:36 PM CDT|Updated: Jul. 5, 2022 at 11:15 AM CDT
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ROCK VALLEY, Iowa (KTIV) - Authorities in northwest Iowa have identified the man that drowned at a pond on July 4th.

The Sioux County Sheriff’s Office says the victim was 19-year-old Aldo Tomas-DeLeon of Rock Valley, Iowa. Authorities say at about 4 p.m. Monday Tomas-DeLeon was swimming at the Groeneweg Pond, located north of Rock Valley, when he went underwater and did not resurface.

First responders were called to the scene and located Tomas-DeLeon with the help of bystanders. They were able to get him out of the water and attempted life-saving measures. Tomas-DeLeon was eventually flown to a Sioux Falls hospital where he was pronounced dead.


ROCK VALLEY, Iowa (KTIV) The Sioux County Sheriff’s Office investigated a drowning that occurred in a pond north of Rock Valley, Iowa July 4th around 4 p.m.

Sioux County Communications received a 9-1-1 call reporting a male was swimming in the pond when he went underwater and did not resurface.

Bystanders along with emergency responders located the male and removed him from the water where life-saving measures were attempted, according to a news release from the Sioux County Sheriff’s Office. The release said he was flown to a Sioux Falls, SD hospital where he was pronounced deceased.

The name of the victim is being withheld pending notification of family.

The sheriff’s office was assisted by the Rock Valley Police Department, Rock Valley Fire Department and Rock Valley Ambulance.