Alpe Gera Dam

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Alpe Gera Dam
Alpe Gera Dam is located in Italy
Alpe Gera Dam
Location of Alpe Gera Dam in Italy
Official name Diga Alpe Gera
Country Italy
Location Sondrio
Coordinates 46°18′52″N 09°56′37″E / 46.31444°N 9.94361°E / 46.31444; 9.94361Coordinates: 46°18′52″N 09°56′37″E / 46.31444°N 9.94361°E / 46.31444; 9.94361
Construction began 1958
Opening date 1964
Dam and spillways
Type of dam Concrete gravity
Impounds Cormor
Height 174 m (571 ft)
Length 528 m (1,732 ft)
Elevation at crest 2,128 m (6,982 ft)
Dam volume 1,700,000 m3 (2,223,516 cu yd)
Spillway capacity 62 m3/s (2,190 cu ft/s)
Total capacity 68,100,000 m3 (55,210 acre⋅ft)
Active capacity 62,700,000 m3 (50,832 acre⋅ft)
Normal elevation 2,125 m (6,972 ft)
Power Station
Installed capacity 35 MW

The Alpe Gera Dam is a gravity dam on the Cormor River 17 km (11 mi) northeast of Sondrio in the Lombardy region of Italy. It is 174 m (571 ft) tall and supports a 35 MW hydroelectric power station.[1]

The dam was constructed between 1958 and 1964 and is best known for the concrete placement techniques used during its construction. Instead of concrete being poured into conventional monoliths, it was poured in layers with a lean mix. Next, the concrete was settled with immersed vibrators and then contraction joints were cut into the layer. These methods were not only cost-saving but instrumental in the development of roller-compacted concrete in dam construction.[2][3][4]

See also[edit]


  1. ^ "Alpe Gera Dam". Registro Italiano Dighe. Retrieved 3 July 2011. 
  2. ^ Hoedt, ed. G. den (1990). Canals, reservoirs and dams, waste disposal, geomembrane properties and testing, mechanical damage, creep and durability, miscellaneous tests, special products and applications. Rotterdam [u.a.]: Balkema. p. 457. ISBN 90-6191-121-4. 
  3. ^ Duggal, S. K. (1998). Building materials. Rotterdam [u.a.]: Balkema. p. 111. ISBN 90-5410-252-7. 
  4. ^ Abdo, Fares (2008). "RCC Trends in Early 21st Century Medium-Size Dams". HydroVision 2008. HCI Publications (240): 1.