Scuba Diver Dies In Alcova Reservoir Posted by John Axtell Date: April 28, 2020 7 Views CASPER, Wyo. (AP) – Wyoming authorities say a man died while scuba diving Sunday morning in Alcova Reservoir west of Casper. Authorities have not released his identity other than to say he was part of a group of trained divers. The Natrona County Sheriff’s Office says people on the scene attempted to provide first aid while medics responded. An investigation by multiple agencies is underway.