Auckland’s water storage is on the brink of a milestone, with dam levels expected to hit 100 percent for the first time since September 2023.

As of Tuesday, total dam storage was sitting at 99.8 percent, with rain still falling across the region.

Sharon Danks, head of water, said staff are watching closely as water levels rise.

Seven of Auckland’s 10 major supply dams are already full and spilling, and the last to fill — Wairoa Dam in the Hūnua Ranges — is nearly there.

Thanks to a wet four months, both the Wāitākere and Hūnua catchments have received over one metre of rainfall, about 50 percent more than normal.

That means less reliance on the Waikato River, which costs five times more to treat than local dam water.

“It’s like having more taps to fill a bath,” said Danks, explaining why the western dams fill more quickly than larger, slower ones like Wairoa.

For Coasties, this has a ripple effect.

Every time Auckland can lean on its dams instead of the Waikato River, it saves energy and cost. A win for everyone’s water bill.

With more rain forecast through winter and into early spring, Auckland could enjoy sustained high water levels for the months ahead.

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