The Missouri State Highway Patrol says Tami Olson, 29, was found unresponsive at Riverfront Park in Leavenworth, Kansas around 10:30 a.m. Thursday.
She was transported to Cushing Memorial Hospital where she is now responsive.
An Endangered Person Advisory was issued for Olson Wednesday after her car was found in the parking lot at Weston Bend State Park with a suicide note.
Her boyfriend told police she had left her cell phone and other personal property at her home in Omaha.
The Missouri State Highway Patrol is continuing to investigate.