Annual Conservation Project rotates between 3 states of OVR
| Year | State | Location |
| 1997 | Indiana | |
| 1998 | Ohio | Freelands System |
| 1999 | Kentucky | Sloan's Valley Cave System |
| 2000 | Indiana | Leonard Springs Nature Park |
| 2001 | Ohio | Machens Rock |
| 2002 | Kentucky | Redmond Creek Cave System |
| 2003 | Indiana | Carcass Crypt Pit |
| 2006 | Kentucky | Redmond Creek / Disappointment Pit |
If anyone knows of a possible cave related conservation project in Indiana and would like it to be considered by the OVR for 2004, please contact the OVR Listserver at ovr@ontosystems.com