 |
Dam core is impermeable, clay
like gravel supported by two massive shoulders of river gravel. |
|
The dam is the largest
earth-filled water-retaining structure in New Zealand. |
|
It has a volume of 12.5 million
cubic metres which is about 1.5 times as much water as Wellington
harbour. |
|
The spillway can cope with
3,400 cubic metres of water per second, about 10 times the mean river
flow. |
|
Construction began in 1958.
|
|
The station was commissioned in
1965. |
|
Southern end of High Voltage
Direct Current (HVDC) link which joins the North and South Island
electricity systems. |
