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Ghatagar Dams Project, Maharashtra

Client

Government of Maharashtra Irrigation Department

Main contractor

Nissho Iwai Corporation

Project management

J-Power

Dam contractor

Patel Engineering Ltd

Pump-turbine supplier

Fuji Electric

Generator-motor and control equipment supplier

Fuji Electric

Penstock supplier

Indian Hume Pipe Co.

Pumping station contractor

Bharat Heavy Electricals Limited

Blasting consultant

Central Mining Research Institute

Excavation contractor

R.J. Shah and Co

Concrete supplier

Dirk India

Strata control consultants

Central Mining Research Institute

Strata control software

CMRI_Rock

Fly ash composition testing

Maharashtra Engineering Research Institue

Completion date

2005

Estimated cost

£40 million

Dam type

RCC

Overall capacity

250MW

Concrete type

Pozzocrete

Concrete used

80,000t

Upper reservoir – catchment area

18.43km²

Upper reservoir –gross storage capacity

5,870,000m³

Upper reservoir – live storage area

5,210,000m³

Lower reservoir – catchment area

2.5km²

Lower reservoir –gross storage capacity

3,800,000m³

Lower reservoir – live storage area

3,460,000m³

Upper dam - type

RCC

Upper dam - height

14.5m

Upper dam - crest length

478m

Lower dam - type

RCC

Lower dam - height

78m

Lower dam - crest length

390m

Upper spillway - type

Ogee

Upper spillway - capacity

837m³/s

Lower spillway - type

Ogee

Lower spillway - capacity

101m³/s

Penstock type

Underground

Penstock length

700m

Penstock diameter

4.29m

Powerhouse type

Underground

Turbine type

Vertical reversible Francis pump turbine

No of units

2

Turbine output

125MW

Turbine rated head

430m

Generator type

Vertical synchronous motor generator

No of units

2

Generator output

147MW
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