Table:
text: Snowy Mountains Scheme
Major dams and reservoirs
Major dams and reservoirs
Dam_constructed Year_completed Impounded_body_of_water Reservoir_capacity Dam_wall_height Dam_type
Blowering Dam 1968 Blowering Reservoir ML ( × 10 ^6cuft) m (ft) Rockfill embankment
Deep Creek Dam 1961 Deep Creek Reservoir ML ( × 10 ^6cuft) m (ft) Concrete gravity
Eucumbene Dam 1958 Lake Eucumbene ML ( × 10 ^6cuft) m (ft) Earthfill embankment
Geehi Dam 1966 Geehi Reservoir ML ( × 10 ^6cuft) m (ft) Rockfill embankment
Guthega Dam 1955 Guthega Reservoir ML ( × 10 ^6cuft) m (ft) Concrete gravity
Happy Jacks Dam 1959 Happy Jacks Pondage ML ( × 10 ^6cuft) m (ft) Concrete gravity

text: Snowy Mountains Scheme
Major dams and reservoirs
Major dams and reservoirs
Dam_constructed Year_completed Impounded_body_of_water Reservoir_capacity Dam_wall_height Dam_type
Island Bend Dam 1965 Island Bend Pondage ML ( × 10 ^6cuft) m (ft) Concrete gravity
Jindabyne Dam 1967 Lake Jindabyne ML ( × 10 ^6cuft) m (ft) Rockfill embankment
Jounama Dam 1968 Jounama Pondage ML ( × 10 ^6cuft) m (ft) Rockfill embankment
Khancoban Dam 1966 Khancoban Reservoir ML ( × 10 ^6cuft) m (ft) Earthfill embankment
Murray Two Dam 1968 Murray Two Pondage ML ( × 10 ^6cuft) m (ft) Concrete arch
Talbingo Dam 1970 Talbingo Reservoir ML ( × 10 ^6cuft) m (ft) Rockfill embankment
Tantangara Dam 1960 Tantangara Reservoir ML ( × 10 ^6cuft) m (ft) Concrete gravity
Tooma Dam 1961 Tooma Reservoir ML ( × 10 ^6cuft) m (ft) Concrete embankment

text: Snowy Mountains Scheme
Major dams and reservoirs
Major dams and reservoirs
Dam_constructed Year_completed Impounded_body_of_water Reservoir_capacity Dam_wall_height Dam_type
Tumut Pond Dam 1959 Tumut Pond Reservoir ML ( × 10 ^6cuft) m (ft) Concrete arch
Tumut Two Dam 1961 Tumut Two Pondage ML ( × 10 ^6cuft) m (ft) Concrete gravity

Question: Information provided for the Snowy Mountains program, which completed year has a concrete gravity dam type and impounded body of Deep Creek reservoir?