Reservoir Elevations
- Normal full pool: 749.5 meters (2,459 feet)
- Normal minimum pool: 697.0 meters (2,287 feet)
- Surface area at full pool: 18,830 hectares (46,500 acres)
- Total storage capacity: 7.2 kilometers3 (5,869,000 acre-feet)
- Usable storage capacity 6.1 kilometers3 (4,980,000 acre-feet)
Dam, Concrete Gravity
- Deck Elevation: 753.5 meters (2,472 feet)
- Length: 916.0 meters (3,055 feet)
- Approximate height above foundation: 112.8 meters (370 feet)
- Maximum spillway capacity: 4,106 meters3/sec (145,000 cfs)
- Maximum low level outlets capacity: 1,730 meters3/sec (61,000 cfs)
Power Facilities
- Designed ultimate installation: 8 units at 105 MW total 840 MW
- Currently installed: 5 units at 120 MW total 600 MW
- Date power commercially available: August 24, 1975
- Head at full pool: 107.0 meters (352 feet)
- Maximum turbine discharge of 5 units at full pool: 745.6 meters3/sec (26,500 cfs)
More information on Libby Dam is available from the USACE, Seattle District.