| Age at missing | 38 years old |
| Case ID | robert-c-heissenberger |
| City en | Las Vegas |
| City geo ID | 5506956 |
| City slug | las-vegas |
| Classification | Endangered Missing |
| Classification en | Endangered Missing |
| County en | |
| County fips ref | 32003 |
| County slug | clark |
| Created at | 2026-01-13T03:40:38+00:00 |
| Date of birth | 1966-03-11 |
| Disappearance details | Heissenberger was last seen walking away from Lake Mead at Lake Mead National Recreation Area off of Northshore Drive near mile marker 8 in Las Vegas, Nevada on April 8, 2004. His bronze 1999 Mazda B-2500 truck was later found abandoned at the park. It was locked and his watch, wallet, and sneakers were inside. An extensive search of the Lake Mead area turned up no sign of Heissenberger. His case remains unsolved. Investigating Agency National Park Service 702-293-8998 Source Information NamUs The Las Vegas Review-Journal Updated 1 time since October 12, 2004. Last updated November 22, 2004. |
| Disappearance details en | Heissenberger was last seen walking away from Lake Mead at Lake Mead National Recreation Area off of Northshore Drive near mile marker 8 in Las Vegas, Nevada on April 8, 2004. His bronze 1999 Mazda B-2500 truck was later found abandoned at the park. It was locked and his watch, wallet, and sneakers were inside. An extensive search of the Lake Mead area turned up no sign of Heissenberger. His case remains unsolved. Investigating Agency National Park Service 702-293-8998 Source Information NamUs The Las Vegas Review-Journal Updated 1 time since October 12, 2004. Last updated November 22, 2004. |
| Disappearance details word count | 98 |
| Distinguishing marks | White male. Light brown hair, brown eyes. Heissenberger's nickname is Rob. |
| Distinguishing marks en | White male. Light brown hair, brown eyes. Heissenberger's nickname is Rob. |
| Full name | Robert C. Heissenberger |
| Full name en | Robert C. Heissenberger |
| Height | 5'11 |
| ID | 6111 |
| Investigating agency | National Park Service 702-293-8998 Source Information NamUs The Las Vegas Review-Journal |
| Missing since | 2004-04-08 |
| Official last updated | 2004-11-22 |
| Official update count | 1 |
| Official update history | |
| Path | nevada/clark/las-vegas |
| Race | White |
| Race en | White |
| Sex | Male |
| Source info | NamUs The Las Vegas Review-Journal |
| State en | Nevada |
| State ref | NV |
| State slug | nevada |
| Status | active |
| Updated at | 2026-01-13T03:40:38+00:00 |
| URL path | nevada/clark/las-vegas |
| Weight | 145 pounds |
Heissenberger was last seen walking away from Lake Mead at Lake Mead National Recreation Area off of Northshore Drive near mile marker 8 in Las Vegas, Nevada on April 8, 2004. His bronze 1999 Mazda B-2500 truck was later found abandoned at the park. It was locked and his watch, wallet, and sneakers were inside. An extensive search of the Lake Mead area turned up no sign of Heissenberger. His case remains unsolved. Investigating Agency National Park Service 702-293-8998 Source Information NamUs The Las Vegas Review-Journal Updated 1 time since October 12, 2004. Last updated November 22, 2004.