- In Auckland, there has not been enough rainwater to fill the dams.
- Dams are built across the streams, rivers, and estuaries.
- The purposes of dams are for retaining water and to prevent areas from flooding.
- Watercare operates 14 supply reservoirs 5 of them located Waitakere Ranges 2 Helensville, Hunua Ranges one east Papakura.
- The dams supply 80 percent water after world war 2 Dams were made of earth and rocks.
- Dams need 1.8 meters of rain in Auckland annually a year.
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