Monte Kosa Missing Person Case

Feb 28, 2019

Sep 27, 2022

Monte

Kosa

76

41

69 inches

180 lbs

White / Caucasian

Male

On a summer day in June of 1991, 41-year-old Monte Loren Kosa was with five other people on a boat in the vast wilderness of Alaska. Their vessel was navigating the Copper River near a place called Haley Creek. The powerful currents and unpredictable nature of the river turned a seemingly ordinary outing into a tragedy. The boat capsized, plunging all six individuals into the cold, rushing water. While three people managed to survive the ordeal, Monte Kosa, along with Loren Kosa and Harry Rocheleau, disappeared into the river. At the time he went missing, Monte was described as being 69 inches tall, weighing 180 pounds, with brown hair and blue eyes. The sudden and violent capsizing of the boat initiated a desperate struggle for survival in the remote Alaskan waters. In the chaos that followed the vessel overturning, three individuals were fortunate enough to be rescued or make it to safety, but the remaining three were swept away. The incident, which occurred on June 21, 1991, was reported to the Alaska State Troopers, prompting a search for the missing men. The remote location on the Copper River, however, presented significant challenges for search and rescue operations. The immense and rugged landscape of the Copper River Census Area is known for its unforgiving terrain and powerful waterways, making extensive searches difficult. Decades have passed since the boating accident, and the case of Monte Kosa remains unresolved. He, along with Loren Kosa and Harry Rocheleau, are still officially listed as missing. The lack of recovery and the absence of new information have left their families with unanswered questions and a profound sense of loss. The event serves as a somber reminder of the inherent dangers of navigating Alaska's wild rivers. The overview of this case is one of a recreational outing that turned into a catastrophic event, leading to the disappearance of three individuals who were tragically never seen again after their boat overturned in the formidable Copper River.

Jun 21, 1991

Copper River

Alaska

Valdez–Cordova Census Area

No

48465

Alaska State Troopers

Anchorage

Alaska

Anchorage Borough

99507

Malia Miller

Missing Persons Clearinghouse Manager

5700 East Tudor Road, Alaska

9072695511

State

Law Enforcement

910040183

1991-06-21

Alaska State Troopers

9773

Brown

Blue

Blue

07/26/2026