Case Details:December Whiteplume, a 16-year-old Native American girl, was last seen on December 8, 2025. No address, circumstances of disappearance, or reporting details have been made public. She is described as standing 5'4" and weighing approximately 150 pounds, with brown eyes and black hair. No photograph has been released in connection with the case.

The Riverton Police Department is the agency of jurisdiction. The Wyoming Division of Criminal Investigation (DCI) also maintains the case in its statewide missing-persons clearinghouse. As of this writing, Whiteplume's case does not appear in the National Missing and Unidentified Persons System (NamUs) or the Charley Project database, and no NCMEC or NCIC case number has been published. The case remains open and unresolved. Anyone with information is asked to contact the Riverton Police Department at 307-856-4891 or the Wyoming DCI at 307-777-7181.