Andong Dam Multi-Purpose Development Project

Country:

South Korea

Client:

Korea Water Resources Development Corporation

Sector:

Water
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SMEC provided feasibility studies and design services for the Andong Dam and hydroelectric power station on the Nakdong River Basin in southeast Korea. The project was funded by the Asian Development Bank. Upon completion, the dam provided river storage of 1,000 million m³ to overcome a steadily increasing water deficit in the lower reaches of the basin. The storage regulated the river flow, supplied water for irrigation, industrial and municipal requirements, maintains flow in the estuary to limit salt water intrusion, and operated an 80MW hydro power facility. The main features of the scheme were an earth and rockfill dam with a 73m high, 535m long crest, a 20m high, 238m long afterbay weir and a surface power station incorporating two 40MW deriaz variable reversible pumps and turbines.  SMEC’s services included: a feasibility study to establish water requirements, assessment of the economic viability of the project, optimisation of the sizing and arrangement of the Andong Dam, design of the dam and related structures and preparation of tender drawings and specifications of all civil works and the electrical and mechanical plant.