PICTURED: Siblings, 2 and 4, who were swept to their deaths during picnic outing with their mom in California

These are the two young children have died after getting caught up in the rough waters of California stream on an excursion with their mother.

Sophie Humann, 4, and her brother Deejay Humann, 2, were swept away after they entered the fast-moving water of a creek in San Bernardino on Tuesday.

The kids were playing near Mill Creek while on a day out to the Thurman Flats Picnic Area with their mother.

While the mom was tending to her son, the girl entered the water and got swept down the stream, according to the San Bernardino County Sheriff's Department.

The mother began a desperate search for her daughter - but when she returned to the little boy, she realized he had also disappeared.

The kids were playing near Mill Creek while on a day out to the Thurman Flats Picnic Area with their mother

Fire and law enforcement officials were enlisted to help in the desperate search for the kids

First responders are seen trying to revive one of the children with CPR 

The kids were playing near Mill Creek while on a day out to the Thurman Flats Picnic Area with their mother

'After frantically searching, she hiked up to the picnic area and contacted another family to help search for the children but were unsuccessful in locating them,' said the sheriff's statement.

Fire and law enforcement officials were enlisted to help in the desperate search for the young kids.

The little girl was finally found at 4:39pm and her brother at 5:04pm near the creek's edge, abc7 reported.

A San Bernardino County Fire swift-water rescue team ultimately managed to locate them in the water.

The girl was sent to Redlands Community Hospital by ambulance while the boy was airlifted to Loma Linda University Medical Center.

Despite being rushed to local hospitals and receiving life-saving measures, both of the children were tragically pronounced dead at the hospital, the sheriff's statement said.

The girl was sent to Redlands Community Hospital by ambulance while the boy was airlifted to Loma Linda University Medical Center

Despite being rushed to local hospitals and receiving life-saving measures, both of the children were tragically pronounced dead at the hospital

A GoFundMe for the children has collected over $10,000.

It reads: 'On May 7th 2024 God welcomed two more beautiful angels through his gates. It is with extreme sadness that we announce the passing of Sophie and Deejay Humann. 

'Both of them were a bright spark in this world and will be deeply missed. They touched the lives of so many and it’s our turn to give back to their family in this time of need. 

'We are raising money to cover the costs of the funeral and memorial services for Sophie and Deejay's family as this passing was completely unexpected. We want to give Deejay and Sophie the memorial they deserve, to honor their memory and say our last goodbyes.'

Mill Creek is a 17.8-mile-long stream located in the San Bernardino Mountains.