| Dam Name | Wanapum |
| Incident Date | 12/4/1995 |
| Country | United States |
| State/Province | Washington |
| Dam Height (m) | 28.3 |
| Uncontrolled Release of the Reservoir | No |
| Dam Type | Gravity |
| Detailed Dam Type | Rockfill;Gravity;Concrete |
| Incident Type | |
| Incident Description | Spillway gate chain limit switch failed |
| High Level Failure Mode | |
| Lessons Learned | |
| Initiating Event | |
| Initiating Event Description | |
| Structures/Components | Embankment |
| Failure Mode Description | |
| Emergency Action Plan Implemented | Unknown |
| Consequences | Consequence Data Unavailable |
| Geographic Coordinates - Decimal Degrees | 46.8734, -119.9712 |
| Normal Reservoir Storage (m3): | 727,753,200.0 |
| Crest Elevation (m) |